End-Capping Groups for Small-Molecule Organic Semiconducting Materials: Synthetic Investigation and Photovoltaic Applications through Direct C-H (Hetero)arylation
作者:Te-Jui Lu、Po-Han Lin、Kun-Mu Lee、Ching-Yuan Liu
DOI:10.1002/ejoc.201601257
日期:2017.1.3
A Pd-catalyzedC–H (hetero)arylation methodology has been optimized for the efficient synthesis of various useful end-capping groups that are widely applied in small-molecule optoelectronic materials. We report herein the synthesis of a broad scope of target molecules ranging from donor-type through acceptor-type to hybrid-type end-capping groups. To demonstrate their application in dye-sensitized
Synthesis of mono- and bis-arylated 3,4-(ethylenedioxythiophenes) via direct palladium catalyzed arylation reactions
作者:Arasambattu K. Mohanakrishnan、P. Amaladass、J. Arul Clement
DOI:10.1016/j.tetlet.2006.11.138
日期:2007.1
The synthesis of arylated/heteroarylated 3,4-ethylenedioxythiophene derivatives is reported using a straightforward palladium mediated Heck coupling of 3,4-ethylenedioxythiophene with various aryl/heteroaryl halides. (c) 2006 Elsevier Ltd. All rights reserved.
Pd-mediated C–H arylation of EDOT and synthesis of push–pull systems incorporating EDOT
作者:P. Amaladass、J. Arul Clement、Arasambattu K. Mohanakrishnan
DOI:10.1016/j.tet.2007.07.037
日期:2007.10
The direct C-H arylation of 3,4-ethylenedioxythiophene (EDOT) is described under Heck-type experimental conditions. This methodology has been used to synthesize a series of push-pull systems containing EDOT units. (C) 2007 Elsevier Ltd. All rights reserved.
The structural modification of thiophene-linked porphyrin sensitizers for dye-sensitized solar cells
作者:Na Xiang、Xianwei Huang、Xiaoming Feng、Yijiang Liu、Bin Zhao、Lijun Deng、Ping Shen、Junjie Fei、Songting Tan
DOI:10.1016/j.dyepig.2010.05.003
日期:2011.1
Three donor (pi-spacer) acceptor porphyrin dyes were synthesized for use in dye-sensitized solar cells The dyes comprised the same donor (porphyrin derivative) and acceptor/anchoring group (2-cyanoacrylic acid) but varying pi-spacer consisting of a combination of 4-methylthiophene, 4-hexylthiophene or 3,4-ethylenedioxythiophene groups The dyes displayed different adsorption behavior and coverage of the TiO2 surface (C) 2010 Elsevier Ltd. All rights reserved
Sn- and Pd-Free Synthesis of D-π-A Organic Sensitizers for Dye-Sensitized Solar Cells by Cu-Catalyzed Direct Arylation
作者:Jiung-Huai Huang、Po-Han Lin、Wei-Ming Li、Kun-Mu Lee、Ching-Yuan Liu
DOI:10.1002/cssc.201700421
日期:2017.5.22
Abstract<A variety of D–π–A‐type functional organic dyes are facilely synthesized by direct C−H arylation catalyzed by inexpensive copper salts. Under optimized reaction conditions, a broad substrate scope with good functional group compatibility was demonstrated. Based on this synthetic strategy, three new dye sensitizers (CYL‐5–7) were designed and fabricated for use in dye‐sensitized solar cells (DSSCs). Photovoltaic characterization showed that these devices gave open‐circuit voltages of 0.65–0.75 V, short‐circuit currents of 5.90–12.60 mA cm−2, and fill factors of 65.6–76.9 %, corresponding to power conversion efficiencies (PCEs) of 2.95–6.20 %. This work represents the first use of Cu‐catalyzed C−H arylation for a step‐saving, Sn‐free synthesis of precursor dyes for DSSC applications.