title: Supramolecular self-assembly carbazolyl radicals nanospheres triggered by ultraviolet light for explosives sensing.
abstract: In this work, we designed and synthesized a carbazole-type molecule that can form carbazolyl radicals in chloroform solution under the irradiation of UV light. The process is accompanied by an obvious change in the emission color from blue to bright green. The radicals and the neutral molecules assemble together and form nanospheres through synergistic effect of π-π stacking, intermolecular hydrogen bonds and charge transfer interaction. High resolution-transmission electron microscopy (HR-TEM) is used to confirm the nanospheres. The radius sizes of the nanospheres are mainly in 80-100nm. Further, these nanospheres act as the fluorescence sensor for explosives detection, and they exhibit high selectivity and sensitivity to 2, 4, 6-trinitrophenol (TNP). The limit of detection for nanospheres is 1.2×10(-7)M.
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
authors: Hongwei
authors: H
authors: Ma
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
authors: Feng
authors: F
authors: Li
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
authors: Yanan
authors: Y
authors: Zhang
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
authors: Xiaobai
authors: X
authors: Li
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
authors: Tao
authors: T
authors: Li
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
authors: Fangzhong
authors: F
authors: Shen
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China. Electronic address: zhming@jlu.edu.cn.
authors: Ming
authors: M
authors: Zhang
keywords: Explosives sensing; Light-responsive; Nanospheres; Radicals; Self-assembly