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July 2018
Synthesis and anhydrous proton conductivity of doped azole functional PGMA-hBN nano-flakes
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Abdulmalik Yusuf, Sevim
July 2018
Organic light-emitting diodes based on PVK and Zn(II) salicylidene composites
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Jos
July 2018
Synthesis of PPy/RGO-based hierarchical material with super-paramagnetic behavior and understanding its robust photo current driven by visible light
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Wenyan Zhang, Chen Shen, Gongxuan Lu, Yaru Ni, Chunhua Lu, Zhongzi Xu In this work, a PPy/RGO-based hierarchical material, Fe3O4@Pt@PPy@RGO, was constructed by enveloping hollow Fe3O4 microspheres and Pt nano-particles (NPs) into polypyrrole (PPy) shell, and then binding the core-shell nano-composites with graphene oxide (GO) membranes by UV irradiation for 12
July 2018
Photo-degradation in air of spin-coated PC60BM and PC70BM films
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Vanja Blazinic, Leif K.E. Ericsson, Stela Andrea Muntean, Ellen Moons The fullerene derivatives PC60BM and PC70BM are widely used as electron accepting components in the active layer of polymer solar cells. Here we compare their photochemical stability by exposing thin films of PC60BM and PC70BM to simulated sunlight in ambient air for up to 47
July 2018
Conjugated, rod-like viologen oligomers: Correlation of oligomer length with conductivity and photoconductivity
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Long Chen, Elodie Vivier, Charlotte J. Eling, Tahkur S. Babra, Jean-Sebastien G. Bouillard, Ali M. Adawi, David M. Benoit, Franti
July 2018
Fe/Nx clusters embedded in graphene with tunable properties for gas separation
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Afshan Mohajeri, Akbar Omidvar Increasing concerns about capture and separation of CO2 and its impact on the global warming are motivating researchers to discover new materials and strategies for efficient CO2 capture. Here, we explored the possibility of conductive Fe/Nx clusters embedded in graphene (Fe/Nx/G) as an adsorbent for electrocatalytically switchable CO2 capture. Using density functional theory including long-range dispersion corrections, we investigated the adsorption process of CO2 on Fe/Nx/G (x
July 2018
Cross-linked PEDOT: PSS as an alternative for low-cost solution-processed electronic devices
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Renan Colucci, Matheus Henrique Quadros, Fl
July 2018
Synthesis and characterization of thiophene-mediated hole transport materials for perovskite solar cells
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Zia-Ur-Rehman, Aamer Saeed, Muhammad Faisal One of the most exciting fields in the search for renewable energy sources are perovskite solar cells (PSCs) whose power conversion efficiency (PCE) has increased from less than 5% to a certified value of over 22.0% in an incredibly short time. Hole transport materials (HTMs) are the vital part of PSCs, and a large number of HTMs have been developed until now. The design and development of molecular architecture that provides excellent transporting properties has become the most challenging issue for chemists. Among all HTMs, thiophene-based HTMs are found to be the most promising ones. This mini-review provides an adequate amount of information about the thiophene-based HTMs, i.e., summarizes and discusses their synthetic routes and device parameters such as short-circuit current (Jsc), open-circuit voltage (Voc), and percent conversion efficiency (PCE). The results of this work will be helpful to further improve the technological performance of this process. Hopefully, this review will be supportive of new opinions in the quest for designs of more effective thiophene-based HTMs.

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June 2018
Influence of interfacial polymerization on the crystallinity, molecular weight, conductivity and redox behavior of poly(2,3-dimethyl aniline)
Publication date: July 2018
Source:Synthetic Metals, Volume 241 Author(s): Subrata Mondal, Sukanya Bera, M.V. Sangaranarayanan The synthesis of crystalline nanofibers of poly (2,3-dimethyl aniline) using interfacial polymerization is reported with dichloromethane-water and hexane-water interfaces as illustrations. Apart from the differences in the morphology, molecular weight and conductivity, there exist remarkable variations in the optical and electrical properties of the interfacially synthesized polymer in comparison with the conventional single phase method. Furthermore, the morphologies and conductivities of the polymer vary with the choice of interfaces and are attributed to the rate of polymerization as well as the solvent polarity. The origin of the crystallinity is ascribed to the reaction kinetics as well as nature of the oxidant. The electrochemical sensing of hydrogen peroxide using poly (2, 3-dimethyl aniline)-coated glassy carbon electrodes is investigated in neutral phosphate buffer solutions.

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June 2018
Editorial Board
Publication date: June 2018
Source:Synthetic Metals, Volume 240

June 2018
Synthesis of a new phenothiazine-carbazole polymer derivative and utilization in an electrochromic cell
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Young Chul Choi, Rangaraju Satish Kumar, Naveen Mergu, Jaemyeng Jeong, Young-A Son In this study, a phenothiazine-carbazole electrochromic copolymer (CNU-CKP) was designed and prepared and fully confirmed by their 1H NMR, FT-IR, UVvis, GPC and CV analyses. For this copolymer, we investigated its electrochromic properties by making an electrochromic cell. This cell consisted of polymer-spray-coated ITO glass and a gel electrolyte. We achieved good cyclic stability and electrochromic switching results with interesting color changes. Finally, the experimental results were compared with theoretical studies.

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June 2018
Performance analysis and negative dielectric anisotropy behavior of nematic liquid crystal doped with newly synthesized 1-(p-chlorobenzyl)-5-nitrobenzimidazole cobalt complex
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Ersin Orhan, Muharrem G
June 2018
Small-molecule acceptors based on 4H-cyclopenta[1,2-b:5,4-b
June 2018
Triphenylamine/oxadiazole hybrids differing by the substitution pattern: Influence on the electroluminescence properties of yellow and green emitting diodes
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Marc Lepeltier, Xavier Sallenave, Denis Tondelier, Gjergji Sini, Fabrice Goubard, Didier Gigmes, Bernard Geffroy, Fr
June 2018
Low bandgap diketopyrrolopyrrole-based polymers with an asymmetric unit of fluoridated phenylene-thiophene for efficient polymer solar cells
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Xianghua Zeng, Zhanfeng Li, Jingkun Ren, Tianxiang Ge, Zemao Zang, Qinjun Sun, Hua Wang, Yuying Hao Two low bandgap copolymers (PDPP-PT and PDPP-PTF2) based on asymmetrical phenylene-thiophene as donor unit and diketopyrrolopyrrole as acceptor unit were developed for polymer solar cells. Their thermal, optical, electronic properties and photovoltaic performances were systematically investigated. Both polymers exhibited narrow bandgaps (below 1.5
June 2018
Synthesis and characterization of poly(3-hexylthiophene)-grafted polyvinyl alcohol
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Thien An Phung Hai, Ryuichi Sugimoto Poly(3-hexylthiophene) (P3HT) was grafted onto the surface of polyvinyl alcohol (PVA) through simple chemical oxidative polymerization with FeCl3 in three different solvents, namely acetonitrile, chloroform, and hexane. Among these solvents, hexane best stimulated the grafting of P3HT to PVA; the modified PVA was obtained with a high grafting ratio and molecular weight. The resultant modified PVA was characterized by Fourier-transform infrared (FT-IR), ultraviolet visible (UVvis), fluorescence spectroscopies, X-ray diffraction (XRD), as well as thermo gravimetric analysis (TGA), contact angle and field emission scanning electron microscopy (FE SEM) coupled with energy dispersive X-ray (EDX) analysis. The presence of P3HT on the PVA surface imparted hydrophobic character, and the PVA modified with P3HT exhibited enhanced electrical conductivity compared to PVA. The peaks in the XRD spectrum of PVA were less intense following P3HT grafting to the PVA surface, and the build-up of P3HT on the PVA surface led to the appearance of absorption and emission peaks in the visible wavelength range. PVA was less stable following grafting by P3HT and the existence of elemental sulfur originating from P3HT was detected on the modified PVA by FE-SEM elemental mapping.

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June 2018
A comprehensive investigation of organic active layer structures toward high performance near-infrared phototransistors
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Yuanlong Liang, Wenli Lv, Xiao Luo, Lan He, Kun Xu, Feiyu Zhao, Fobao Huang, Feiping Lu, Yingquan Peng Tin phthalocyanine (SnPc) is a kind of organic semiconductor material with excellent absorbing characteristic in near-infrared (NIR) region but rarely applied in photosensitive organic field-effect transistors (PhOFETs). Here, a series of SnPc based PhOFETs with different active layer structures were fabricated and characterized for the purpose of making a systematic investigation of organic active layer structure toward NIR phototransistors. Among the sample devices with different active layer structures, the tri-layer planar heterojunction structure of Device C exhibits high photoresponsivity of 2686.1
June 2018
Investigating the contact material influence on didodecyloxy-PPE OFETs
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Stefanie Schmid, Silke Koser, Christian Melzer, Eric Mankel, Uwe H.F. Bunz In this contribution we discuss the impact of the contact formation between semiconductor and source and drain contact on the device performance of bottom-contact top-gate organic field-effect transistors (OFETs) based on fibrillary semiconducting networks of poly(2,5-didodecyloxy-para-phenyleneethynylene) (D-OPPE). We show that the density and strength of the junctions between the D-OPPE fibers and the electrodes is likewise essential for the device performance as the electronic match of the involved materials and can even predominate the electronical effect. Due to the large bandgap of D-OPPE, high work function contacts are required to allow for efficient hole injection. MoO3 interlayers are known to improve the hole injection and thus commonly the device performance of p-channel OFETs. Indeed, photoelectron spectroscopy revealed a significant hole injection barrier reduction of 0.7
June 2018
Metallic conductivity beyond the Mott minimum in PEDOT: Sulphate at low temperatures
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Dominik Farka, Andrew O.F. Jones, Reghu Menon, Niyazi Serdar Sariciftci, Philipp Stadler Elastic scattering mechanisms dominate the charge transport in crystalline metals, resulting in a characteristic increase in conductivity at low temperatures. However, disorder arising, for example, from alloying can hamper transport and lead to decreased coherence among scattered electrons (i.e. inelastic scattering). This is typically the situation in non-crystalline metals. Likewise, conductive polymers are particularly prone to defect states with decreased carrier mobility (i.e. electrical conductivity). We present the first report of conduction in the elastic scattering regime in conductive polymers without the detrimental effect on conductivity. As in a crystalline metal, conductivity increases upon cooling. More specifically, we observed a minimum conductivity in free-standing metallic PEDOT:sulphate at around 4
May 2018
Density-functional theoretical study of fluorination effect on the electronic structure and electron drift mobilities of symmetric pentacene derivatives
Publication date: June 2018
Source:Synthetic Metals, Volume 240 Author(s): Vladim
May 2018
Editorial Board
Publication date: May 2018
Source:Synthetic Metals, Volume 239

May 2018
Clip-like polyaniline nanofibers synthesized by an insitu chemical oxidative polymerization and its strong electrorheological behavior
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Qingkun Wen, Kai He, Chengwei Wang, Baoxiang Wang, Shoushan Yu, Chuncheng Hao, Kezheng Chen We fabricated a clip-like polyaniline (PANI) nanofiber by using an insitu chemical oxidative polymerization assisted with a surfactant mixed system. First of all, three kinds of surfactants (cetyltrimethyl ammonium bromide (CTAB), polyvinyl pyrrolidone (PVP), sodium dodecyl benzene sulfonate (SDBS)) were used to provide different mixing combination. The combination of different surfactants has an important role on the morphology of obtained PANI nanoparticles. We propose possible synthetic mechanisms which CTAB and PVP as a structure directing agent plays the role of template to adjust the morphology. The morphology of clip-like PANI nanofibers has been characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The structure was characterized by X-ray powder diffraction, transform infrared spectroscopy (FTIR) and Thermo Gravimetric Analyzer (TGA). Moreover, the electrorheological (ER) behavior of clip-like polyaniline nanofibers was characterized by rotational rheometer.

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May 2018
Revealing the anisotropy in thermoelectric transport performances in CNT/PANI composites
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Jikun Chen, Liming Wang, Dudi Ren, Yanhui Chu, Yong Wu, Kangkang Meng, Jun Miao, Xiaoguang Xu, Yong Jiang Although the carbon nanotube (CNT) based organic composites thermoelectric materials arouses considerable attentions, up to now the anisotropy in their thermoelectric performances has been overlooked. Herein, strong anisotropy in the temperature-dependent thermal and electrical transport properties have been demonstrated for organic composites thermoelectric materials, made by cold pressing the CNT powders coated by in situ polymerized polyaniline (PANI). The Seebeck coefficient, electrical and thermal conductivity are larger along the direction perpendicular to the cold pressing axis compared to the direction parallel to pressing axis. The anisotropy observed in the thermal conductivity and electrical conductivity maximizes at a CNT content of 3040% (expressed in mass%), while the one observed for the Seebeck coefficient is small. The highest thermoelectric performances of the thermoelectric composites are achieved at a CNT mass ratio of
May 2018
Impact of Ag@SiO2 core-shell nanoparticles on the photoelectric current of plasmonic inverted organic solar cells
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Kekeli N'Konou, Malika Chalh, Virginie Monnier, Nicholas P. Blanchard, Yann Chevolot, Bruno Lucas, Sylvain Vedraine, Philippe Torchio We report on the influence of silver-silica core-shell nanoparticles (Ag@SiO2 NPs) and bare silver nanoparticles (Ag NPs) on the photoelectric current of plasmonic inverted organic solar cells. The synthesized Ag@SiO2 NPs are deposited on a zinc oxide layer. The optimized plasmonic devices concern the Ag@SiO2 NPs with 5
May 2018
Electrochromic behavior of poly(pyridinium triflates) films: Electrolyte ions influence
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): D.G. Frolov, M.M. Petrov, E.E. Makhaeva, M.L. Keshtov, A.R. Khokhlov Electrochromic properties of two poly(pyridinium) salts (PV1 and PV2 with additional methyl substituent) in different supporting electrolytes were investigated. KCl, NaCl, LiCl and KBr supporting electrolytes were used to analyze the ions transfer due to ions size variation. The electrochromic properties of polymer films were examined by electrochemical and spectroelectrochemical methods. Both polymers demonstrate reversible redox process in all studied supporting electrolytes. In general, replacement of K+ ions by Li+ or Na+ ions leads to deterioration in the optical contrast and coloring time in contrast to bleaching time which is improved for both studied polymers. The reason behind this is thought to be an increasing cation size obstructing the cation transport in redox reactions. Comparing the relative changes in polymer electrochromic characteristics by the electrolyte replacement is less significant for PV2 films. The replacement of supporting electrolyte anions has practically no effect on the electrochromic properties of both polymers.
May 2018
An insight into electronic and optical properties of multilayer graphene quantum dots synthesized by hydrothermal approach
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Shikha Jindal, Sushama M. Giripunje The carbonaceous small sized graphene quantum dots (GQDs) synthesized by hydrothermal route manifest the existence of band gap by cutting the graphene sheets into quantum dots (QDs). Consequently, the tuning of band gap from 03.2
May 2018
Pyrimidine based hole-blocking materials with high triplet energy and glass transition temperature for blue phosphorescent OLEDs
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Seokhoon Jang, Si Hyun Han, Jun Yeob Lee, Youngu Lee We designed and synthesized new hole-blocking materials (HBMs), mPyrPPB and pPPyrPB, consisting of pyrimidine and phenylene segments for high-performance blue phosphorescent OLEDs. The thermal, electrochemical, and optical properties of mPyrPPB and pPPyrPB were systemically investigated. It was found that the Tg values of mPyrPPB and pPPyrPB were 118 and 137
May 2018
Solution-fabrication dependent thermoelectric behavior of iodine-doped regioregular and regiorandom P3HT/carbon nanotube composites
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Murat Tonga, Lang Wei, Eugene Wilusz, Ljiljana Korugic-Karasz, Frank E. Karasz, Paul M. Lahti Thermoelectric (TE) measurements were compared for iodine-doped composites of carbon nanotubes (CNTs) with poly(3-hexylthiophene-2,5-diyl) (P3HT) having different degrees of regioregularity. Regioregular P3HT gave much higher power factors, showing the need of regioregularity in the polymer for best TE results. TE power factors (PFs) up to 148
May 2018
Hollow
April 2018
Effect of aniline monomer concentration on PANI electropolymerization process and its influence for applications in chemical sensors
Publication date: May 2018
Source:Synthetic Metals, Volume 239 Author(s): Hugo Jos
April 2018
Editorial Board
Publication date: April 2018
Source:Synthetic Metals, Volume 238

April 2018
Structural, optical, and electrical properties of multi-walled carbon nanotubes/polyaniline/Fe3O4 ternary nanocomposites thin film
Publication date: April 2018
Source:Synthetic Metals, Volume 238 Author(s): A. Ibrahim, M.H. Abdel-Aziz, M.Sh. Zoromba, A.F. Al-Hossainy Multi-walled carbon nanotubes/polyaniline/magnetite (MWCNTs/PANI/Fe3O4) ternary nanocomposites were synthesized. The ternary nanocomposites were synthesized through two main steps, namely; (i) polymerization of aniline in the presence of a carboxyl functionalized multi-walled carbon nanotubes to form binary MWCNTs/PANI. (ii) Co-precipitation of magnetite on the surface of MWCNTs/PANI binary composites to prepare MWCNTs/PANI/ Fe3O4 ternary composites. MWCNTs/PANI/ Fe3O4 ternary composite thin films were also fabricated via thermal evaporation technique in a vacuum at 1
April 2018
Long-term ageing of PEDOT:PSS: wettability Study
Publication date: April 2018
Source:Synthetic Metals, Volume 238 Author(s): Caroline Duc, George G. Malliaras, Vincent Senez, Alexis Vlandas Known for its electric properties, poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) has emerged as a good candidate for organic electronics and more recently for bio-applications. Despite its growing use in engineering applications, little is known about the stability in time of its interface properties. Here, we consider the surface ageing of PEDOT:PSS when it is stored in environments with various relative humidity and temperature conditions and as a function of the cross-linking agents (3-glycidoxypropyltrimethoxysilane) concentration. Our systematic wettability study over 6 months reveals that the PEDOT:PSS interface undergoes significant reorganization and some irreversible changes on these timescales regardless of the concentration of cross-linker added.
March 2018
Graphene/polypyrrole nanofiber prepared by simple one step green method for electrochemical supercapacitors
Publication date: April 2018
Source:Synthetic Metals, Volume 238 Author(s): Sima Pourbeyram, Parinaz Kheyri In this work a simple green method has been developed to synthesize polypyrrole/graphene nanofiber (green-ppy/G) based on graphene oxide and pyrrole direct interaction without using reducing agent, oxidative agent, surfactant and organic solvent. The synthesis procedure was simple, inexpensive and ecofriendly. Morphology and structure of the synthesized nanocomposites was discussed by XRD, SEM, TEM and CV techniques. XRD pattern revealed that the resulting polypyrrole was not amorphous and the graphene oxide sheets improved the crystalline structure of the obtained polymer. SEM image looked like a very thin layer drawn over the underlay and implied that the ppy has been covered on the surface of grapheme sheets. In the TEM image of the nanocomposite the nanofibers of ppy attached to the graphene layer were clearly seen. A maximum capacitance value of 480
March 2018
Editorial Board
Publication date: March 2018
Source:Synthetic Metals, Volume 237

March 2018
Rational tailoring of C275 towards promising organic dyes: Enhancing light absorption and charge separation
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Zhu-Zhu Sun, Xiao-Ju Geng, Wei-Lu Ding, Shuai Feng, Yu-Lin Xu, Yan-Lei Li, Zhen-Yu Xiao, Shu-Jie Sun, Zhi-Qiang Zhao, Jiang-Feng Liu Designed with electron-donating and electron-withdrawing moieties as donors and acceptors, respectively, a series of novel organic dyes for dye-sensitized solar cells (DSCs) are simulated using density functional theory (DFT) and time-dependent DFT (TD-DFT) methods The interacting dye/TiO2 systems are also studied to further explore the interfacial injection process of photo-excited electron. The model dye C275 is featured with donor/acceptor (D/A) molecular architecture, which is primary to achieve the easy charge-transfer excitation and suitable energy levels alignment. To date, considerable efforts are devoted to the design and synthesis of D/A type organic dyes, and the initial configurations are typically comprised of N-annulated perylene donor, porphyrin linker, and carboxylic acid acceptor. Our results show that, the electronic levels and optical absorption properties can be tuned gradually by introducing auxiliary donor units or electron-deficient spacer in acceptor groups. Moreover, the designed dyes also exhibit good performance in terms of photoinduced charge transfer, electron injection, and dye regeneration, etc. Through structural modification of donor moieties, the new tailored dyes provide appropriate energy levels, strong light-harvesting and easy charge separation. Meanwhile, the distinct red-shift of optical absorption and large amount of transferred charges are also obtained by structural tailoring of acceptor groups, whereas the large values of injection time may be harmful for the interfacial photoelectron injection. Therefore, comparing with donor modification, it should be more carefully to choose appropriate acceptor group with the balance of various energetic and kinetic factors for the rational design of high-efficient organic dyes.

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March 2018
White electroluminescence based on PFO:CdSe(ZnS):P3OT hybrid blends
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): W. Renzi, N.J.A. Cordeiro, E. Laureto, A. Urbano, P.R.C. da Silva, J.L. Duarte White light emitting diodes (WOLEDs) were prepared from easily processable materials, well known in the literature (PFO and P3OT), with the intention of exploring the blueshift of the P3OT emission, when in low concentration, in blends with PFO in beta phase. The photoluminescence (PL) study, through donor excitation, of PFO:P3OT blends with different relative concentrations, served as basis for comparing and predicting the behavior of these blends when excited via carrier injection. Despite the good PL results, the white emission of the PFO:P3OT blends with low P3OT concentration was not replicable via electroluminescence (EL), due to the lack of a more intense green component. To circumvent this problem, new PFO:P3OT blends were prepared with the insertion of CdSe(ZnS) quantum dots (QDs), which have green emission. With this new composition, the devices presented white emission (0.33:0.33) at low voltages and current (8
March 2018
Investigation of optical and dispersion parameters of electrospinning grown activated carbon nanofiber (ACNF) layer
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): K. Dincer, B. Waisi, G.
March 2018
Voltammetric sensor based on poly(3-methylthiophene) synthesized in dichloromethane for tyramine determination in moldy cheese
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Ali K
March 2018
Electrochemical cycling stability of nickel (II) coordinated polyaniline
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Yibing Xie, Xuerong Sha The nickel (II) coordinated polyaniline (PANI-Ni) was designed as active electrode material to improve electrochemical cycling stability of conductive polymer-based supercapacitors. The conductive coordination polymer of PANI-Ni was formed to grow on the substrate of carbon paper through the hydrothermal coordination reaction between Ni(Ac)2 and PANI. PANI-Ni with intrachain and interchain coordination structure could reinforce the polymer molecule chain strength to overcome volumetric swelling and shrinking during charge/discharge process. The specific capacitance was obviously improved from 234.5
March 2018
Acid Blue dyes in polypyrrole synthesis: The control of polymer morphology at nanoscale in the promotion of high conductivity and the reduction of cytotoxicity
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Patrycja Bober, Yu Li, Udit Acharya, Yaduram Panthi, Ji
March 2018
Transparent conducting films composed of graphene oxide/Ag nanowire/ graphene oxide/PET
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Katsuyuki Naito, Riko Inuzuka, Norihiro Yoshinaga, Wu Mei Graphene oxide (GO) dispersed in ethanol, silver nanowire (AgNW) and GO are sequentially applied on PET films (5
March 2018
Development of an improved synthetic route to triply linked di(perylene bisimides) with varied substituents and their performance as non-fullerene acceptors in polymer photovoltaics
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Levi M.J. Moore, Mark B. Norman, Anthony R. Benasco, Julian M. Richardson, Sarah E. Morgan A series of triply-linked perylene bisimide dimers (diPBIs) with varied solubilizing groups (short-chain aliphatic, long-chain aliphatic, and aryl) were synthesized to determine the structure-property relationships that govern their performance as non-fullerene acceptors in conventional polymer photovoltaic devices. In the synthesis of the intermediates, a new solvent and ligand system for dehalogenation of 1,6,7,12-tetrabromo-perylene bisimides to 1,12 dibromo-perylene bisimides was developed in order to access PBI systems that are not available via procedures previously reported. The new dimethylacetamide/2-picolinic acid system expands the available R-groups for inclusion on perylene bisimides that render them insoluble in the conventional DMSO/L-proline system, while providing milder conditions and higher yields. A cosolvent system of DMSO/diphenyl sulfoxide was utilized to couple the brominated perylene bisimides, allowing for direct coupling of aliphatic-substituted perylene bisimides. The resulting diPBIs showed only very small differences in optoelectronic properties, but aliphatic-substituted diPBIs provided better performance due to their better solubility and ability to form co-continuous films with the donor polymer PTB7.
March 2018
Electrochemical behavior of poly-bithiophene, poly-3,4-ethylendioxythiophene and poly-3,4-ortho-xylendioxythiophene in EtOH/H2O (1:1) mixture
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): Gerardo Salinas, Jorge G. Ibanez, Rub
February 2018
Corrigendum to Room temperature and near-Room temperature coordination polymer magnets [Synth. Met. 188 (2014) 5356]
Publication date: March 2018
Source:Synthetic Metals, Volume 237 Author(s): M.K. Amshumali, Mark D. Harvey, Gordon T. Yee
February 2018
Editorial Board
Publication date: February 2018
Source:Synthetic Metals, Volume 236

February 2018
Tunable intrinsic semiconducting properties of diketopyrrolopyrrole-based copolymers with electron donating thiophene and electron accepting thiazole moieties
Publication date: February 2018
Source:Synthetic Metals, Volume 236 Author(s): Han Na Hong, Hyung Jong Kim, Aesun Kim, Suna Choi, Young Un Kim, Min Ju Cho, Dong Hoon Choi The p- and n-type semiconducting characteristics of four conjugated polymers, P(DPPBT), P(DPPBTz), P(TzDPPBT), and P(TzDPPBTz) with molecular energy levels that were systematically varied in a cascade manner, was investigated. The four polymers were synthesized using 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione or 3,6-bis(5-bromothiazol-2-yl)-2,5-bis(2-octyldodecyl)pyrrolo [3,4-c]pyrrole-1,4(2H,5H)-dione monomers coupled with bithiophene or bithiazole monomers. By replacing the electron-rich thiophene with electron-deficient thiazole, the energy levels of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) were significantly lowered. Thin film transistors (TFTs) based on the four polymers were investigated to observe the effect of the polymer energy levels. The results demonstrate that DPP-based polymers have the potential to exhibit p-type or n-type semiconducting properties based on the number of thiazole units incorporated into the conjugated polymer structure.

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February 2018
Small biomolecule dopant retinals: Electron blocking layer in P3HT:PCBM type organic solar cells
Publication date: February 2018
Source:Synthetic Metals, Volume 236 Author(s): Eser K
February 2018
Unusual enhancement of fluorescence and Raman scattering of core-shell nanostructure of polydiacetylene and Ag nanoparticle
Publication date: February 2018
Source:Synthetic Metals, Volume 236 Author(s): Chunzhi Cui, Seokho Kim, Dong June Ahn, Jinsoo Joo, Gil Sun Lee, Dong Hyuk Park, Bo-Hyun Kim The colorimetric and fluorescent properties of polydiacetylene (PDA) have been assessed for chemosensors and ultrafast biosensor applications. The low quantum efficiency, however, has delayed the further development of PDA based practical devices. Here, we synthesized a hybrid nanostructure of PDA with Ag nanoparticles of core. A core-shell type Ag@PDA blue phase nanoparticles showed significantly enhanced Raman scattering, whereas it dramatically decreased after the thermal treatment inducing phase transition of PDA to red. On the other hand the Ag@PDA red phase nanoparticles showed an evidently increasing fluorescence accompanying with the shortened lifetime. These unusual reinforced optical properties is attributed to the core Ag nanoparticles providing the surface selection rule and the surface enhancement effects by the localized surface plasmon. Consequently, our result demonstrates the hybrid structure of PDA with metal nanoparticles to be an alternative to overcome the limit of PDA for high performance devices.

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Exploring the experimental photoluminescence, Raman and infrared responses and density functional theory results for TFB polymer
Publication date: February 2018
Source:Synthetic Metals, Volume 236 Author(s): Wesley Renzi, Neusmar J.A. Cordeiro, Henrique de Santana, Marcello F. Costa, Marco A.T. da Silva, Edson Laureto, Jos
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Booking.com B.V. is based in Amsterdam in the Netherlands. Ready for some statistics? Our 1,534,024 properties, including 860,482 holiday rentals, are located in 123,105 destinations in 229 countries and territories, and are supported internationally by 198 offices in 70 countries.
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