Synthesis and Optoelectronic Characterizations of Conjugated Polymers Based on Diketopyrrolopyrrole and 2,2′-(thieno[3,2-b]thiophene-2,5-diyl)diacetonitrile Via Knoevenagel Condensation

被引:1
作者
Wu, Kunlan [1 ]
Chen, Pinyu [1 ]
Cui, Tianqiang [1 ]
Zhang, Baoxin [1 ]
Sun, Chun-Lin [1 ]
Wang, Jianguo [2 ]
Shao, Xiangfeng [1 ]
Chen, Liangliang [3 ]
Chen, Yu [4 ]
Liu, Zitong [1 ]
机构
[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem SKLAOC, Key Lab Special Funct Mat & Struct Design, Lanzhou 730000, Peoples R China
[2] Inner Mongolia Univ, Coll Chem & Chem Engn, Coll Biomed Sci, Inner Mongolia Key Lab Synth & Applicat Organ Func, Hohhot 010021, Peoples R China
[3] Jianghan Univ, Sch Optoelect Mat & Technol, Key Lab Flexible Optoelect Mat & Technol, Minist Educ, Wuhan 430056, Peoples R China
[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
关键词
ambipolar semiconductors; diketopyrrolopyrrole; 2,2 '-(thieno[3, 2-b]thiophene-2, 5-diyl)diacetonitrile; Knoevenagel condensation; photothermal property; FIELD-EFFECT TRANSISTORS; DESIGN; MOBILITY; COPOLYMERS; PROPERTY;
D O I
10.1002/marc.202401055
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Conjugated polymers have attracted extensive attention as semiconducting materials in wearable and flexible electronics. In this study, we utilize atom-economical Knoevenagel reaction to construct two conjugated polymers, PTDPP-CNTT and PFDPP-CNTT, based on dialdehyde-thiophene/furan-flanked diketopyrrolopyrrole (DPP) and 2,2 '-(thieno[3,2-b]thiophene-2,5-diyl)diacetonitrile (CNTT). The resulting polymers exhibited suitable highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) energy levels, small bandgaps, and broad UV-vis-NIR absorptions (approximate to 400-1000 nm), endowing them with photothermal and balanced ambipolar semiconducting properties with hole and electron mobilities over 10-3 cm2V-1s-1. Additionally, PTDPP-CNTT-based organic field-effect transistors (OFETs) devices show photo-responsive characteristics at 808 and 980 nm in the hole transport channel with the photo-responsivenesses of 9.0 x 10-3 A/W and 0.4 A/W, respectively, suggesting potential application in organic NIR-phototransistors.
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页数:8
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