Π‐Extented Conjugated Polymers Entailing Pechmann Dye Moieties for Solution‐Processed Ambipolar Organic Semiconductors. Issue 8 (August 2014)

• Record Type: Journal Article
• Authors: Cai, Zhengxu; Liu, Zitong; Luo, Hewei; Qi, Penglin; Zhang, Guanxin; Zhang, Deqing
• Is Part Of: Chinese journal of chemistry. Volume 32:Issue 8(2014:Aug.)
• Page Start: 788
• Page End: 796
• Publication Date: 2014-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201400423
• Languages: English
• ISSNs: 1001-604X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>In this paper, we report the design, synthesis and semiconducting behavior of two conjugated D‐A polymers BPDDTE and BPDBDTE which entail BPD, a Pechmann dye framework, as electron accepting moieties and (<italic>E</italic>)‐1, 2‐di(thiophen‐2‐yl)ethane with and without alkyl chains as electron donating moieties. They both show very narrow bandgaps below 1.3 eV. Based on the characterization of the field‐effect transistors, thin film of BPDDT exhibits ambipolar semiconducting properties with hole and electron mobilities reaching 0.245 and 0.095 cm²·V????????????¹·s⁻¹, respectively, after thermal annealing. Similarly, BPDBDTE with more alkylchains shows ambipolar semiconducting behavior with hole mobility and electron mobilities reaching 0.109 and 0.081 cm²·V⁻¹·s⁻¹. Furthermore, BPDBDTE shows good solubilities in several common organic solvents and thus is easily solution‐processible. Thus, BPDBDTE is potentially processible with inkjet printing and roll‐to‐roll printing techniques.</p> </abstract>