title: High-order non-linear optical effects in organic luminogens with aggregation-induced emission.
abstract: 2,3-bis(4-(phenyl(4-(1,2,2-triphenylvinyl)phenyl)amino)phenyl)fumaronitrile (TTF) shows unique aggregation-induced emission (AIE) characteristics. Under the excitation of a 1560 nm femtosecond laser, simultaneous three-photon-excited luminescence (3PL) and third-harmonic-generation signals can be observed from its nanoaggregate and the solid state. TTF is further encapsulated with DSPE-mPEG (a type of amphiphilic polymer) to form AIE-active nanoparticles. 3PL brain imaging of mice is achieved based on the nanoparticles.
authors.affiliation: State Key Laboratory of Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, JORCEP (Sino-Swedish Joint Research Center of Photonics), Zhejiang University, 310058, Hangzhou, China; Joint Research Laboratory of Optics of Zhejiang Normal University and Zhejiang University, Hangzhou, 310058, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Qian
authors.forename: Zhenfeng
authors.initials: Z
authors.lastname: Zhu
authors.forename: Anjun
authors.initials: A
authors.lastname: Qin
authors.forename: Wei
authors.initials: W
authors.lastname: Qin
authors.forename: Liliang
authors.initials: L
authors.lastname: Chu
authors.forename: Fuhong
authors.initials: F
authors.lastname: Cai
authors.forename: Hequn
authors.initials: H
authors.lastname: Zhang
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wu
authors.forename: Rongrong
authors.initials: R
authors.lastname: Hu
authors.forename: Ben Zhong
authors.initials: BZ
authors.lastname: Tang
authors.forename: Sailing
authors.initials: S
authors.lastname: He
keywords: aggregation-induced emission; doped-nanoparticles; non-linear optical microscopy; third-/fifth-harmonic generation; three-/four-photon-excited fluorescence