Premium
Inside Back Cover: Crystal Engineering of Room Temperature Phosphorescence in Organic Solids (Angew. Chem. Int. Ed. 25/2020)
Author(s) -
Hamzehpoor Ehsan,
Perepichka Dmitrii F.
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202007036
Subject(s) - phosphorescence , steric effects , quantum yield , luminescence , crystal engineering , fluorescence , cover (algebra) , yield (engineering) , photochemistry , chemistry , materials science , nanotechnology , crystal structure , crystallography , stereochemistry , optoelectronics , supramolecular chemistry , physics , optics , mechanical engineering , metallurgy , engineering
The molecular packing of organic luminogens governs their photophysical behavior. In their Communication on page 9977, E. Hamzehpoor and D. F. Perepichka report a series of highly emissive azatriangulenetrione (TANGO) solids whose luminescence properties are controlled by the size of the substituents. The co‐alignment of carbonyl groups in sterically unencumbered TANGO derivatives leads to room‐temperature phosphorescence (triplet emission) with a quantum yield of up to 42 %, while the approximately 60° rotation induced by bulky tert ‐butyl groups results in an almost pure fluorescence.