Theoretical insights into the central “acceptor” bridge function on the whole visible light and near-infrared emission in tetraphenylpyrazine-based luminogens

Abstract

Tetraphenylpyrazine (TPP) is a conspicuous heterocyclic fluorophore with aggregation-enhanced emission (AEE) character. In general, the TPP building block is considered as either the molecular rotor or electron acceptor in construction...

Theoretical characterization of two-photon fluorescent probes for nitric oxide detection: sensing mechanism, photophysical properties and protonation effects

“…The four critical factors of Δ E ad , NACME, relaxation energy and Huang–Rhys factor were then analyzed to understand the k nr reduction. 71,72…”

“…The four critical factors of DE ad , NACME, relaxation energy and Huang-Rhys factor were then analyzed to understand the k nr reduction. 71,72 First, the energy gap law tells us that a large DE ad prefers a small k nr as log (k nr ) decreases almost exponentially with DE (see part III in the ESI †). It was found in Fig.…”

Enhancing reverse intersystem crossing and horizontal dipole orientation for near-infrared thermally activated delayed fluorescence molecules by donor engineering strategy

“…44–46 The related methodology and applications have been extensively utilized by Shuai, Peng, Ma, etc . 47–68 In addition, the non-equilibrium geometries have decisive contributions for both radiative and non-radiative rates, and this could generate remarkable influence on the excited state energy consumption processes. However, in the TVCF method, it cannot fully capture the impact of non-equilibrium geometries on radiative and non-radiative rates, especially when the non-Condon effects are significant.…”

Engineering Isomeric AIEgens Containing Tetraphenylpyrazine for Dual Memory Storage

“…Tetraphenylpyrazine (TPP) is a heterocycle luminogen with its AIE property first revealed in 2015 . Due to the excellent properties such as facile synthesis, good stability, unique nitrogen binding site, and tunable electronic property, many applications have been developed based on this building block. − For example, the decoration of phenanthroimidazole-based group onto TPP can give a sky blue donor–acceptor (D-A) type AIEgen with its fabricated OLED showing an external quantum efficiency as high as 4.85% . Moreover, when the strong electronic donor of triphenylamine is attached to TPP, a remarkable D–A effect can be realized in AIEgens, showing an obvious solvatochromic effect .…”