A Low-Bandgap Conjugated Copolymer Based on Porphyrin and Dithienocoronene Diimide with Strong Two-Photon Absorption

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• 作者：Weiyi Zhou ; Feng Jin ; Xuebin Huang ; Xuan-Ming Duan ; Xiaowei Zhan
• 刊名：Macromolecules
• 出版年：2012
• 出版时间：October 9, 2012
• 年：2012
• 卷：45
• 期：19
• 页码：7823-7828
• 全文大小：377K
• 年卷期：v.45,no.19(October 9, 2012)
• ISSN：1520-5835

文摘

A new low-bandgap donor鈥揳cceptor (D鈥揂) conjugated copolymer poly(DTCDI鈥揚OR) of planar acceptor dithienocoronene diimide (DTCDI) and strong donor porphyrin (POR) has been synthesized by Sonogashira coupling polymerization. Poly(DTCDI鈥揚OR) exhibits good thermal stability (decomposition temperature of 323 掳C), strong absorption (molar extinction coefficient per repeat unit is 1.05 脳 10⁵ L mol^鈥? cm^鈥? at 468 nm in CHCl₃ solution) in visible and near-infrared region (300鈥?00 nm), low bandgap (1.44 eV), and strong two-photon absorption (2PA) at telecommunication wavelengths with 2PA cross sections per repeat unit as high as 7809 GM at 1520 nm.