Photoconductive Curved-Nanographene/Fullerene Supramolecular Heterojunctions

Qiang Huang; Guilin Zhuang; Hongxing Jia; Manman Qian; Shengsheng Cui; Shangfeng Yang; Pingwu Du

doi:10.1002/anie.201900084

Photoconductive Curved-Nanographene/Fullerene Supramolecular Heterojunctions

Angew Chem Int Ed Engl. 2019 May 6;58(19):6244-6249. doi: 10.1002/anie.201900084. Epub 2019 Apr 1.

Authors

Qiang Huang¹, Guilin Zhuang², Hongxing Jia¹, Manman Qian¹, Shengsheng Cui¹, Shangfeng Yang¹, Pingwu Du¹

Affiliations

¹ 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.
² College of Chemical Engineering, Zhejiang University of Technology, 18, Chaowang Road, Hangzhou, Zhejiang Province, 310032, P. R. China.

PMID: 30843633
DOI: 10.1002/anie.201900084

Abstract

This study presents synthesis and characterizations of two novel curved nanographenes that strongly bind with fullerene C₆₀ 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 C₆₀ @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.

Keywords: carbon nanoring; fullerenes; host-guest systems; photocurrent; time-resolved spectroscopy.

Abstract

Grants and funding