title: Hard-templating of chiral TiO2nanofibres with electron transition-based optical activity.
abstract: The fabrication of optically active inorganic nanomaterials with chiral superstructures attracts attention because of their potential applications in chemical sensing and non-linear optics. Here, we present a facile way to prepare TiO2nanofibres, in which the nanocrystals are helically arranged into a chiral superstructure. Notably, the chiral superstructure shows strong optical activity due to the difference of absorbing left- and right-handed circularly polarized light. This special optical activity resulted from electron transition from the valence band to the conduction band of TiO2through a vicinal effect of helically arranged TiO2nanocrystals.
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 People's Republic of China.
authors.forename: Cui
authors.initials: C
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 People's Republic of China.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Liu
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 People's Republic of China.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Duan
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 People's Republic of China.
authors.forename: Zhehao
authors.initials: Z
authors.lastname: Huang
authors.affiliation: School of Chemistry and Chemical Engineering, State Key Laboratory Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 People's Republic of China.
authors.forename: Shunai
authors.initials: S
authors.lastname: Che
keywords: anatase; circular dichroism; electron transition-based optical activity; hard-templating method