title: Luminescent Nanoswitch Based on Organic-Phase Copper Nanoclusters for Sensitive Detection of Trace Amount of Water in Organic Solvents.
abstract: Brightly luminescent copper nanoclusters (CuNCs) were prepared via a facile one-step synthesis in organic phase, and a novel luminescent nanoswitch on the basis of CuNCs through alternation of the physical states between aggregation and dispersion in response to specific external stimuli was designed. Two states including aggregation state and disaggregation state corresponding to fluorescence on and off signaling can be readily switched in a reversible way based on the aggregation-induced emission and disaggregation-induced quenching mechanism, respectively. This reversible nanoswitch can be controlled by the external stimulus water or N,N'-dicyclohexylcarbodiimide (DCC). The bright luminescence due to aggregation of CuNCs in organic solvents can be effectively quenched by the introduction of a small amount of water, where a disaggregation-induced quenching takes place. This specific behavior is capable to quantify an ultralow level (ppm) of water in aprotic solvents. The excellent reversibility of the nanoswitch enables one to monitor water content in a continuous and recyclable way.
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Huang
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Liu
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Feng
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Yangting
authors.initials: Y
authors.lastname: Ye
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Cong
authors.initials: C
authors.lastname: Tang
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Hang
authors.initials: H
authors.lastname: Ao
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Meizhi
authors.initials: M
authors.lastname: Zhao
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Guilin
authors.initials: G
authors.lastname: Chen
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Chen
authors.affiliation: College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China.
authors.forename: Zhaosheng
authors.initials: Z
authors.lastname: Qian