文献类型：期刊文献

英文题名：Self-revealing kinetically captured self-assembly of a N,N′-diphenyl-dihydrodibenzo[a,c]phenazine derivative

作者：Wang, Qijing[1];Zhang, Zhaozhi[1];Mei, Ju[1]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn,Frontiers Sci Ctr Materiobiol, Shanghai 200237, Peoples R China

年份：2024

卷号：48

期号：23

起止页码：10730

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20242316207362);WOS:【SCI-EXPANDED(收录号:WOS:001234413000001)】；

基金：This research was supported by the National Natural Science Foundation of China (21788102, 22275055, 21875064, and 21790361), the Shanghai Science and Technology Commission Basic Project Shanghai Natural Science Foundation (21ZR1417600), the Shanghai Municipal Science and Technology Major Project (2018SHZDZX03), the Programme of Introducing Talents of Discipline to Universities (B16017), Shanghai Science and Technology Committee (17520750100) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Amino acids - Assembly - Fluorescence - Hydrogen bonds - Real time systems

摘要：Real-time, in situ, and visual characterization of non-equilibrium self-assembly processes is of great interest because of its importance, but it is challenging because of its complexity. Herein, we construct an adduct of vibration-induced emission (VIE)-active N,N '-diphenyl-dihydrodibenzo[a,c]phenazine (DPAC) and a cysteine derivative, i.e., di-tert-butyl 3,3 '-disulfanediylbis(2-formamidopropanoate) (Cys(t)Bu), where DPAC functions as both a hydrophobic motif and fluorescent reporter while Cys(t)Bu acts as a hydrophilic group and hydrogen-bonding moiety. The resulting adduct DPAC-Cys(t)Bu-DPAC is capable of self-assembly and gradually transforming from a non-equilibrium non-dissipative metastable state to a thermodynamically stable state over time. By virtue of the conformation-dependent emission feature of the VIE fluorogen, the whole self-assembly process can be self-monitored by the continuous fluorescence changes from orange-red to blue, in an in situ, real-time, and visual fashion. Moreover, benefiting from the chirality of Cys(t)Bu and the conformation-flexibility of DPAC, circularly polarized luminescence (CPL) with an asymmetry factor (g(lum)) of up to 7.1 x 10(-2) is induced as the kinetically-captured aggregates are transformed into columnar assemblies in a thermodynamically stable state. This work not only opens a new avenue for the real-time and in situ characterization of the self-assembly processes, helping to pave the way for the preparation of complex out-of-equilibrium supramolecular functional systems, but also provides a new type of CPL material.