Arylene Diimide Phosphors: Aggregation Modulated Twin Room Temperature Phosphorescence from Pyromellitic Diimides
作者:Swadhin Garain、Suman Kuila、Bidhan Chandra Garain、Meenal Kataria、Aditya Borah、Swapan K. Pati、Subi J. George
DOI:10.1002/anie.202101538
日期:2021.5.25
Arylenediimide derived ambient organic phosphors are seldom reported despite their potential structural characteristics to facilitate the triplet harvesting. In this context, highly efficient room temperature phosphorescence (RTP) from simple, heavy‐atom substituted pyromelliticdiimide derivatives in amorphous matrix and crystalline state is reported here. Multiple intermolecular halogen bonding
Halogen‐bonding interactions in electron‐deficient π scaffolds have largely been underexplored. Herein, the halogen‐bonding properties of arylene imide/diimide‐based electron‐deficient scaffolds were studied. The influence of scaffold size, from small (phthalimide) to moderately sized (pyromellitic diimide or naphthalenediimides) to large (perylenediimide), axial‐group modification, and number of halo
Novel Pyromellitic Diimide-Based Macrocycle with a Linear π-Electronic System and Bis(phenylethynyl)pyromellitic Diimide: Syntheses, Structures, Photophysical Properties, and Redox Characteristics
studies showed that the phenylacetylene moieties in 2 formed the intramolecularbenzene dimer structures, and the bis(phenylethynyl)pyromellitic diimide moieties in both 2 and 3 were stacked in a parallel and slanted arrangement. Theoretical calculations for 2′ and 3 suggested the existence of electrostatic interactions between the bis(phenylethynyl)pyromellitic diimide moieties. The UV/vis spectral