Huang Qiang, Zhuang Guilin, Jia Hongxing, Qian Manman, Cui Shengsheng, Yang Shangfeng, Du Pingwu
Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering,iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China (USTC), Hefei, Hefei National Laboratory for Physical Anhui Province, 230026, P. R. China.
College of Chemical Engineering, Zhejiang University of Technology, 18, Chaowang Road, Hangzhou, Zhejiang Province, 310032, P. R. China.
Angew Chem Int Ed Engl. 2019 May 6;58(19):6244-6249. doi: 10.1002/anie.201900084. Epub 2019 Apr 1.
This study presents synthesis and characterizations of two novel curved nanographenes that strongly bind with fullerene C to form photoconductive heterojunctions. Films of the self-assembled curved nanographene/fullerene complexes, which served as the photoconductive layer, generated a significant photocurrent under light irradiation. Gram-scale quantities of these curved nanographenes (TCR and HCR) as the "crown" sidewalls can be incorporated into a carbon nanoring to form molecular crowns, and the molecular structure of C @TCR is determined by single-crystal X-ray diffraction. The UV/Vis absorption and emission spectra, and theoretical studies revealed their unique structural features and photophysical properties. Time-resolved spectroscopic results clearly suggest fast photoinduced electron transfer process in the supramolecular heterojunctions.
本研究介绍了两种新型弯曲纳米石墨烯的合成与表征，它们能与富勒烯C强烈结合形成光电导异质结。自组装弯曲纳米石墨烯/富勒烯复合物薄膜用作光电导层，在光照下产生了显著的光电流。克级量的这些弯曲纳米石墨烯（TCR和HCR）作为“冠状”侧壁可被纳入碳纳米环以形成分子冠，并且C@TCR的分子结构由单晶X射线衍射确定。紫外/可见吸收和发射光谱以及理论研究揭示了它们独特的结构特征和光物理性质。时间分辨光谱结果清楚地表明了超分子异质结中快速的光致电子转移过程。
