H-Bond assisted mechanoluminescence of borylated aryl amines: tunable emission and polymorphism

Abstract

Bright tunable solid state emission, intriguing mechanochromism and polymorphism dependent optical characteristics of a series of borylated aryl amines were demonstrated.

Organic Mechanoluminescence with Aggregation‐Induced Emission

“…In 2017, Thilagar's team reported a series of ML‐AIE active borylated materials ( 10 and 11 ) with various heteroatoms such as N‐ and S‐containing phenothiazine derivatives ( 10 a , b ) and N ‐alkylated borylates ( 11 a – f ). The compounds 10 a (10‐(dimesitylboryl)phenothiazine) and 10 b (10‐(bis(2,6‐dimethylphenyl)‐boryl)phenothiazine) exhibited multifunctional properties such as AIE, ML, and mechanofluorism.…”

“…The inset images are reproduced with permission from Refs. ,. Copyright 2017, The Royal Society of Chemistry.…”

Catalyst‐ and Template‐Free Ultrafast Visible‐Light‐Triggered Dimerization of Vinylpyridine‐Functionalized Tetraarylaminoborane: Intriguing Deep‐Blue Delayed Fluorescence

“…Molecules with donor–acceptor (D–A) architectures have proven particularly well suited for the construction of DF systems . By exploiting its inherent Lewis acidity, boron‐containing compounds are being widely exploited in numerous fields . Recently, boron has found a role in the emerging field of TADF materials (representative examples are shown in Chart S1 in the Supporting Information) .…”

Catalyst‐ and Template‐Free Ultrafast Visible‐Light‐Triggered Dimerization of Vinylpyridine‐Functionalized Tetraarylaminoborane: Intriguing Deep‐Blue Delayed Fluorescence

“…[8] Ac ontinuing challenge in organic optoelectronic technology research is the design and development of stable luminescent materials that can effectively harvest both singlet and triplet excitons.I nt he present decade,alot of research effort has been devoted to the development of delayed fluorescence (DF) materials,since the devices fabricated with DF materials show improved efficiency over phosphor-doped devices. [10][11][12][13][14][15][16][17] Recently,boron has found arole in the emerging field of TADF materials (representative examples are shown in Chart S1 in the Supporting Information). [9,18] By exploiting its inherent Lewis acidity, boron-containing compounds are being widely exploited in numerous fields.…”

“…[12,14] Very recently,D -A systems with BN units in the backbone have received considerable attention owing to their unique optoelectronic properties. [15][16][17] As part of the ongoing program, we have demonstrated pure blue emissive materials based on aminoboranes. [14] Our group has al ongstanding interest in the design and development of new solid-state emitters.…”