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Thermally activated delayed fluorescence in Cu(I) complexes originating from restricted molecular vibrations
- Source :
- Chemistry : a European journal, 2017, Vol.23(49), pp.11761-11766 [Peer Reviewed Journal]
- Publication Year :
- 2017
- Publisher :
- Wiley-VCH, 2017.
-
Abstract
- The mechanism of thermally activated delayed fluorescence (TADF) in molecules in aggregated or condensed solid states has been rarely studied and is not well understood. Nevertheless, many applications of TADF emitters are strongly affected by their luminescence properties in the aggregated state. In this study, two new isomeric tetradentate Cu(I) complexes which simultaneously show aggregation induced emission (AIE) and TADF characteristics are reported for the first time. We provide direct evidence that effectively restricting the vibrations of individual molecules is a key requisite for TADF in these two Cu(I) complexes through in-depth photophysical measurements combined with kinetic methods, single crystal analysis and theoretical calculations. These findings should stimulate new molecular engineering endeavours in the design of AIE-TADF active materials with highly emissive aggregated states.
- Subjects :
- Chemistry
Organic Chemistry
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
01 natural sciences
Fluorescence
Catalysis
0104 chemical sciences
Molecular engineering
Molecular vibration
Molecule
Aggregation-induced emission
0210 nano-technology
Luminescence
Single crystal
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Chemistry : a European journal, 2017, Vol.23(49), pp.11761-11766 [Peer Reviewed Journal]
- Accession number :
- edsair.doi.dedup.....fb5fc784103088ef259a8398832105ed