Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
As a typical thermally activated delayed fluorescence (TADF) emitter with green emission, 4CzIPN has attracted much attention recently. Most studies indicated that 4CzIPN doped in different hosts presented different performances; thus, the hosts should have an obvious influence on its photophysical properties. Herein, the influence of four kinds of hosts, including m-CzPym, m-CzTrz, p-CzPym, and p-CzTrz, on the photophysical properties of 4CzIPN is investigated. Molecular dynamics simulations were performed to simulate the host-guest conformations, and the photophysical properties were studied using the combined quantum mechanics/molecular mechanics method coupled with the thermal-vibration correlation function method. It is found that 4CzIPN in doped films has larger transition dipole moments and spin-orbital coupling constants compared to that in nondoped films. Faster radiative decay, intersystem crossing rates, and higher fluorescence efficiency could be obtained in doped films. Our work helps to better understand the photophysical properties of 4CzIPN in doped films and may favor the design of new hosts.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jpca.4c00010 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Systematic variation of the acceptor electrophilicity in donor-acceptor-donor emitters exhibiting efficient room temperature phosphorescence suited for digital luminescence.
Commun Chem
September 2025
Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP), Technische Universität Dresden, Dresden, Germany.
Purely organic materials showing efficient and persistent emission via room temperature phosphorescence (RTP) allow the design of minimalistic yet powerful technological solutions for sensing, bioimaging, information storage, and safety applications using the photonic design principle of digital luminescence. Although several promising materials exist, a deep understanding of the underlying structure-property relationship and, thus, development of rational design strategies are widely missing. Some of the best purely organic emitters follow the donor-acceptor-donor design motif.
View Article and Find Full Text PDFUnveiling Distinct Ultrafast Photocarrier Dynamics and Tailored Nonlinear Optical Absorption in Phase-Engineered Two-Dimensional MoTe.
ACS Nano
September 2025
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China.
Polymorphic two-dimensional (2D) transition metal dichalcogenides (TMDCs) exhibit diverse properties for optoelectronic applications. Here, utilizing phase-engineered MoTe as a prototypical platform, we comprehensively explored its ultrafast and nonlinear optical properties to complete the fundamental framework of phase-dependent optical phenomena in 2D TMDCs. Starting with the phase-selective synthesis of 2H- and 1T'-MoTe with tailored thicknesses, we revealed their distinct photocarrier relaxation mechanisms using intensive power-/temperature-/thickness-dependent transient absorption spectra (TAS).
View Article and Find Full Text PDFA new water soluble mitochondria targeted ESIPT active acylhydrazone for the specific detection of Zn and S ions and bioimaging in HeLa cells.
Spectrochim Acta A Mol Biomol Spectrosc
September 2025
Laboratorio de Química Inorgánica y Organometálica, Departamento de Química Analítica e Inorgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C, Concepción, Chile. Electronic address:
The development of multifunctional fluorescent organic materials capable of selective ion detection, subcellular targeting, and logical operations is a burgeoning area in chemical biology and materials science. Herein, we report the design and development of a novel acylhydrazone based fluorescent ligand (HSN·Cl), which exhibits a distinct "turn-on" emission response toward Zn ions and a subsequent "turn-off" response in the presence of sulfide ions (S). The molecular design incorporates structural elements that facilitate the ESIPT feature, conferring the probe with unique photophysical properties.
View Article and Find Full Text PDFAzaisoindigo and Triphenylamine-Based Donor-Acceptor-Donor (D-A-D) Type Conjugated Small Molecule: Design, Photophysical Properties, and Organic Field-Effect Transistors.
Org Lett
September 2025
Istanbul Technical University, Chemistry Department, Maslak, Istanbul 34469, Turkey.
A donor-acceptor-donor type π-conjugated small molecule, , having an oligoether-functionalized azaisoindigo unit as an acceptor and triphenylamine units as donor groups was designed and synthesized. Its opto-electrochemical properties and charge transport applications were investigated. demonstrated p-type transport behavior with a maximum carrier mobility of 0.
View Article and Find Full Text PDFAtom-precise coinage metal nanoclusters for near-infrared emission: excited-state dynamics and mechanisms.
Chem Soc Rev
September 2025
State Key Laboratory of Crystal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
Understanding the excited-state dynamics of atomically precise coinage metal nanoclusters (CMNCs) is pivotal for elucidating their photoluminescence (PL) mechanisms and rationally tuning emission properties-particularly in the near-infrared (NIR) region, where CMNC-based nanomaterials have tremendous potential for biomedical and optoelectronic applications. This review presents a systematic and comprehensive account of recent advances in investigating the excited-state dynamics and PL mechanisms of NIR-emitting CMNCs with atomic precision, leveraging the synergistic integration of time-resolved spectroscopy and time-dependent density functional theory (TD-DFT) calculations. Distinct from previous reviews that offer a broad survey of CMNC properties, the present review focuses specifically on intrinsic factors, highlighting molecular vibrational features and electronic structure modulation as key determinants of NIR emission.
View Article and Find Full Text PDF