An ultra-narrow bandgap derived from thienoisoindigo polymers: structural influence on reducing the bandgap and self-organization

2016 ◽  
Vol 7 (5) ◽  
pp. 1181-1190 ◽  
Author(s):  
Tsukasa Hasegawa ◽  
Minoru Ashizawa ◽  
Junya Hiyoshi ◽  
Susumu Kawauchi ◽  
Jianguo Mei ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Self Organization ◽  
Narrow Bandgap ◽  
Structural Influence

Six conjugated polymers based on thienoisoindigo (TII) and thiophene-flanked diketopyrrolopyrrole (TDPP) units bearing either branched-alkyl or siloxane-terminated alkyl solubilizing groups have been synthesized.

scholarly journals Development of a quantum chemical descriptor expressing aromatic/quinoidal character for designing narrow-bandgap π-conjugated polymers

2019 ◽  
Vol 10 (41) ◽  
pp. 5584-5593 ◽  
Author(s):  
Yoshihiro Hayashi ◽  
Susumu Kawauchi
Keyword(s):  
Conjugated Polymers ◽  
Quantum Chemical ◽  
Quantum Chemical Descriptor ◽  
Chemical Descriptor ◽  
Narrow Bandgap

Guidance for designing narrow-bandgap copolymers was established by developing a chemical descriptor (QSE) that considers only the monomer and linking sites.

Methoxylation of quinoidal bithiophene as a single regioisomer building block for narrow-bandgap conjugated polymers and high-performance organic field-effect transistors

2020 ◽  
Vol 8 (43) ◽  
pp. 15168-15174 ◽  
Author(s):  
Yunlong Sun ◽  
Yunpeng Zhang ◽  
Yang Ran ◽  
Longxian Shi ◽  
Qingsong Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Block ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Hole Mobility ◽  
Methoxyl Group ◽  
Organic Field Effect Transistors ◽  
Narrow Bandgap

Methoxyl group was introduced to obtain isomer-free methoxylation quinoidal bithiophene building block. Four polymers displayed narrow bandgap (<1.20 eV) and hole mobility of up to 2.70 cm2 V−1 s−1.

Thiophene Fused Azacoronenes: Regioselective Synthesis, Self-Organization, Charge Transport and Its Incorporation in Conjugated Polymers

2014 ◽  
Vol 26 (13) ◽  
pp. 3920-3927 ◽  
Author(s):  
Bo He ◽  
Andrew B. Pun ◽  
Liana M. Klivansky ◽  
Alexandra M. McGough ◽  
Yifan Ye ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Regioselective Synthesis ◽  
Self Organization

scholarly journals Recent Development on Narrow Bandgap Conjugated Polymers for Polymer Solar Cells

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 39 ◽  
Author(s):  
Yueyue Gao ◽  
Ming Liu ◽  
Yong Zhang ◽  
Zhitian Liu ◽  
Yulin Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Narrow Bandgap

scholarly journals Effect of chiral 2-ethylhexyl side chains on chiroptical properties of the narrow bandgap conjugated polymers PCPDTBT and PCDTPT

2016 ◽  
Vol 7 (8) ◽  
pp. 5313-5321 ◽  
Author(s):  
Stephanie L. Fronk ◽  
Ming Wang ◽  
Michael Ford ◽  
Jessica Coughlin ◽  
Cheng-Kang Mai ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Side Chains ◽  
Chiroptical Properties ◽  
Narrow Bandgap

PCPDTBT* and PCDTPT* containing chiral 2-ethylhexyl side chains were synthesized and their resulting chiroptical properties were studied. PCPDTBT* exhibits a stronger chiroptical response compared to PCDTPT*.

scholarly journals Charge delocalization characteristics of regioregular high mobility polymers

2017 ◽  
Vol 8 (2) ◽  
pp. 1146-1151 ◽  
Author(s):  
J. E. Coughlin ◽  
A. Zhugayevych ◽  
M. Wang ◽  
G. C. Bazan ◽  
S. Tretiak
Keyword(s):  
Density Functional Theory ◽  
Conjugated Polymers ◽  
Density Functional ◽  
High Mobility ◽  
Structural Units ◽  
Functional Theory ◽  
Charge Delocalization ◽  
Narrow Bandgap ◽  
The Family ◽  
Structural And Electronic Properties

Density Functional Theory modeling examines structural and electronic properties of charge states in the family of narrow bandgap conjugated polymers with controlled regioregularity among the structural units.

Influence of molecular structure on the performance of low Voc loss polymer solar cells

2016 ◽  
Vol 4 (39) ◽  
pp. 15232-15239 ◽  
Author(s):  
Ming Wang ◽  
Hengbin Wang ◽  
Michael Ford ◽  
Jianyu Yuan ◽  
Cheng-Kang Mai ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Conjugated Polymers ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Narrow Bandgap

Two regioregular narrow bandgap conjugated polymers (PM1 and PM2) are prepared and their devices exhibit low Voc loss and high short circuit current Jsc, but, most significantly, display improved fill factors compared to previously reported PIPCP.

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