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Luminescent Charge‐Neutral Copper(I) Phenanthroline Complexes with Isocyanoborate Ligand
Author(s) -
Chan KinCheung,
Cheng ShunCheung,
Lo Larry TsoLun,
Yiu ShekMan,
Ko ChiChiu
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201701205
Subject(s) - chemistry , luminescence , ligand (biochemistry) , copper , cationic polymerization , phenanthroline , fluorescence , photochemistry , stereochemistry , crystallography , polymer chemistry , organic chemistry , optoelectronics , biochemistry , physics , receptor , quantum mechanics
Copper(I) complexes with thermal activated delayed fluorescence (TADF) have attracted considerable attention for the development of emissive materials in organic light‐emitting devices. However, many emissive Cu I complexes are cationic emitters and cannot be vacuum‐sublimed, a process used for device fabrication. This has limited their applications in devices. In this work we have developed a series of emissive charge‐neutral Cu I complexes with the general formula [Cu(2,9‐Me 2 phen)(CNR){CNB(C 6 F 5 ) 3 }] [R = 2,6‐Me 2 C 6 H 3 , 2,6‐ i Pr 2 C 6 H 3 , 2,4,6‐Cl 3 C 6 H 2 , 2,4,6‐Br 3 C 6 H 2 , 3,5‐(CF 3 ) 2 C 6 H 3 , 4‐SF 5 C 6 H 4 ] through the incorporation of a strong π‐accepting anionic isocyanoborate ligand. All the complexes have been structurally characterized and their photophysical properties have been studied.