Premium
Diversified Photo/Electronic Functions Based on a Simple Chalcone Skeleton: Effects of Substitution Pattern and Molecular Packing
Author(s) -
Cheng Xiao,
Wang Zhaoyang,
Tang Baolei,
Zhang Hongyu,
Qin Anjun,
Sun Jing Zhi,
Tang Ben Zhong
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201706506
Subject(s) - chalcone , materials science , crystallization , substituent , intermolecular force , crystal (programming language) , photochemistry , aggregation induced emission , crystallography , molecule , stereochemistry , organic chemistry , optics , fluorescence , chemistry , physics , computer science , programming language
Structurally simple chalcone derivatives 1–2 are prepared and their diversified emission behaviors are deeply investigated. Two polymorphs ( 1G : λ em = 536 nm, Φ f = 0.08, τ = 1.81 ns; 1O : λ em = 573 nm, Φ f = 0.19, τ = 10.82 ns) with distinctively different emission behaviors are constructed by finely controlling the crystallization conditions of compound 1 . 1G exhibits typical amplified spontaneous emission while 1O shows an interesting blue shift under smashing process ( 1O‐S : λ em = 562 nm, Φ f = 0.23, τ = 6.42 ns), which is ascribed to their different molecular packing structures and intermolecular interactions. Notably, simply introducing a fluorine substituent effectively endows the crystal with red emission (crystal 2 : λ em = 598 nm, Φ f = 0.16, τ = 18.77 ns). Thus multicolor emissions including green, yellow, orange, and red emissions are obtained based on this simple chalcone skeleton.