title: Click chemistry functionalization improving the wideband optical-limiting performance of fullerene derivatives.
abstract: A novel kind of monodonor-bisacceptor (D-A-A) C60 charge-transfer complex was synthesized by the high-yielding [2+2] click chemistry reaction and the Prato reaction. Both electrochemical and UV-vis spectra studies were carried out and they proved that the side groups of the fullerene derivatives played an important role in the energy gaps, and also affected the third-order non-linear optical response. The experimental investigation on the third-order non-linear optical phenomena of the fullerene derivatives was measured using the Z-scan technique at different wavelengths (532 nm and 1064 nm). All the compounds exhibited very special non-linear optical properties when pumped by 21 ps pulses at 532 nm which suggested that there were two different types of reversible photo-isomerization. The optical-limiting performance has also been studied which proved indirectly the mechanism models of the reversible photo-isomerization.
authors.affiliation: Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China. wangdong@ustb.edu.cn.
authors.forename: Xiong
authors.initials: X
authors.lastname: Liu
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Gao
authors.forename: Zhou
authors.initials: Z
authors.lastname: Yang
authors.forename: Yan
authors.initials: Y
authors.lastname: Xing
authors.forename: Hui
authors.initials: H
authors.lastname: Cao
authors.forename: Wanli
authors.initials: W
authors.lastname: He
authors.forename: Huihui
authors.initials: H
authors.lastname: Wang
authors.forename: Jianming
authors.initials: J
authors.lastname: Gu
authors.forename: Huiying
authors.initials: H
authors.lastname: Hu