Organic compounds for solid state luminescence enhancement/aggregation induced emission: a theoretical perspective

Abstract

Organic luminophores displaying one or more forms of luminescence enhancement in solid state are extremely promising for the development and performance optimization of functional materials essential to many modern key...

Intermolecular hydrogen bonding-assisted aggregation induced emission in quinolone–quinazoline conjugates and their potential use in acidochromism

“…Luminescent organic materials exhibiting solid state emission have fascinated the scientific community due to their potential application in diverse areas. 1–3 However, the use of many organic luminophores is marred by the phenomenon of aggregation caused quenching (ACQ). 4–6 In this regard, aggregation induced emission (AIE) has emerged as a great means that not only offers a possible route to overcome ACQ but also, new avenues toward the development of novel AIEgens.…”

Mechanistic insights into diversified photoluminescence behaviours of BF2 complexes of N-benzoyl 2-aminobenzothiazoles

“…In the past few years, theoretical investigations based on a two-channel model, 24,25 which takes account of both the vibronic relaxation and S 0 /S 1 surface crossing pathways, have revealed that minimum energy conical intersection (MECI) induced by the structural deformation in different types of polyheteroaromatic dyes, 26,27 including BF 2 -containing polyheterocycles, 17,28,29 is actually the underlying channel for their nonradiative decay. Inspired by these reports, we herein specifically synthesized four BF 2 complexes of N -benzoyl 2-aminobenzothiazoles ( BFBB-1–4 ) with or without EDGs as model compounds to address the issues mentioned above.…”

Anthracene–naphthylacetonitrile fluorescent isomers and Cl/H substituent dependent molecular packing, solid-state fluorescence and mechanofluorochromism

“…[1][2][3][4][5][6][7][8][9] The solid-state fluorescence of organic molecules is strongly influenced by their molecular structure and structural organization. [10][11][12][13][14][15] For instance, planar polyaromatic organic molecules become nonfluorescent/weakly fluorescent in the solid state due to the aggregation caused quenching (ACQ) effect. The use of a nonplanar core for constructing a twisted fluorophore structure hindered π-π stacking and resulted in strongly enhanced solidstate fluorescence.…”