An extended quinoid molecule based on bis(thiophene-diketopyrrolopyrrole) with balanced ambipolar semiconducting properties and strong near-infrared absorption

Organic semiconductors that exhibit strong absorption in the near-infrared (NIR) region have received increasing attention as new organic optoelectronic materials. In this paper, we report the synthesis, absorption and semiconducting properties of a new quinoid molecule based on bis(thiophene-diketo...

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Published in:Organic chemistry frontiers an international journal of organic chemistry 2023-01, Vol.10 (3), p.632-639
Main Authors: Shang, Wansong, Han, Guangchao, Fan, Qingrui, Yu, Xiaobo, Liu, Dongsheng, Cheng, Li, Xi-Sha, Zhang, Yi, Yuanping, Zhang, Guanxin, Zhang, Deqing
Format: Article
Language:English
Subjects:
Absorption
Conjugation
I.R. radiation
Infrared absorption
Near infrared radiation
Optoelectronics
Organic chemistry
Organic semiconductors
Thin films
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Summary:Organic semiconductors that exhibit strong absorption in the near-infrared (NIR) region have received increasing attention as new organic optoelectronic materials. In this paper, we report the synthesis, absorption and semiconducting properties of a new quinoid molecule based on bis(thiophene-diketopyrrolopyrrole) (2DPP-Q-CN) with a long conjugation length. The results reveal that this new quinoid molecule shows strong absorption in the NIR region with a molar extinction coefficient of 380 000 M−1 cm−1. Moreover, the thin film of 2DPP-Q-CN exhibits balanced ambipolar semiconducting properties with hole and electron mobilities up to 0.19 and 0.20 cm2 V−1 s−1, respectively.
ISSN:2052-4110
2052-4110
DOI:10.1039/d2qo01678h