Synthesis and electronic properties of torsionally constrained blue-emissive triphenylamine-pyridine chromophores

Wiefermann, Julia; Müller, Thomas J. J.

doi:10.1016/j.dyepig.2023.111134

Cited by 2 publications

(2 citation statements)

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“…So, these substances are considered to be promising components for luminescent materials. [25][26][27][28] Carbazole and triphenylamine are excellent electron-donating substituents for the synthesis of fluorescent substances due to high triplet energy, hole transport ability, thermal and photochemical stability. [29][30][31][32] However, the optimized molecular conformations of these fragments are significantly different.…”

Section: Introductionmentioning

confidence: 99%

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Luminescent Mono‐, Di‐ and Trisubstituted 2,4,6‐Triphenylpyridine‐Based Molecules: Synthesis and Properties

Slobodinyuk,

Slobodinyuk

2023

ChemistrySelect

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The chromophores based on a pyridine central acceptor and one/two/three peripheral substituents of different electronic and spatial nature have been designed and synthesized. The structure‐property relationship was studied using differential scanning calorimetry, cyclic voltammetry, UV‐Vis and emission spectroscopy. A study of the thermal properties of the synthesized compounds showed that the presence of a 3,6‐bis(tert‐butyl)carbazole fragment leads to a significant increase in the glass transition temperature of the compounds. Photophysical studies have revealed that N,N‐diphenylamine‐containing pyridines are characterized by a high fluorescence quantum yield. In this regard, the expediency of the simultaneous presence in the structure of chromophores of electron‐donating groups of different natures has been proven, since this approach makes it possible to obtain compounds with high fluorescence quantum yield and molar absorption coefficient, as well as a narrow band gap and a deep level of the highest occupied molecular orbital.

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Section: Introductionmentioning

confidence: 99%

“…In addition, in this case, the ring‐substitution routes are rather convenient. So, these substances are considered to be promising components for luminescent materials [25–28] …”

Section: Introductionmentioning

confidence: 99%