共轭体系
光热治疗
能量转换效率
聚合物
光电子学
材料科学
光热效应
接受者
摩尔吸收率
近红外光谱
能量转换
吸收(声学)
电极
纳米技术
化学
光学
物理化学
复合材料
物理
热力学
凝聚态物理
作者
Yuanyuan Cao,Jin-Hu Dou,Ningjiu Zhao,Shiming Zhang,Yu-Qing Zheng,Jianping Zhang,Jieyu Wang,Jian Pei,Yapei Wang
标识
DOI:10.1021/acs.chemmater.6b04405
摘要
Development of special organic materials that are able to absorb light energy in the second near-infrared window (NIR-II) is significantly important for treating deep-tissue-buried diseases or supplying power to implantable electronic devices. Herein, a narrow bandgap donor–acceptor (D-A) conjugated polymer with thiophene-fused benzodifurandione-based oligo(p-phenylenevinylene) (TBDOPV) as acceptor part and 2,2′-bithiophene (DT) as donor part was developed and exploited as a photothermal conversion material with high extinction coefficient and robust photostability in the NIR-II window. According to transient absorption analysis results, the photothermal conversion ability of this polymer is attributed to the fast internal conversion (IC) process. The high photothermal conversion efficiency makes this polymer a promising NIR-II adsorbing antenna to remotely actuate thermo-dependent devices, e.g., high-performance photothermal–electrical and photothermal–mechanical converters.
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