o-Carboranyl–Phosphine as a New Class of Strong-Field Ancillary Ligand in Cyclometalated Iridium(III) Complexes: Toward Blue Phosphorescence

Title
o-Carboranyl–Phosphine as a New Class of Strong-Field Ancillary Ligand in Cyclometalated Iridium(III) Complexes: Toward Blue Phosphorescence
Authors
이상욱
Keywords
LIGHT-EMITTING-DIODES; IR(III) COMPLEXES; STRATEGIC SYNTHESIS; POLYHEDRAL BORANES; RHODIUM COMPLEXES; CRYSTAL-STRUCTURE; ROOM-TEMPERATURE; ENERGY-TRANSFER; PHOTOPHYSICS; EMISSION
Issue Date
2015-07
Publisher
AMER CHEMICAL SOC
Citation
ORGANOMETALLICS, v. 34, NO 14, Page. 3455-3458
Abstract
Heteroleptic tris-cyclometalated Ir(III) complexes supported by the o-carboranyl–phosphine ligand (CBP), (C∧N)2Ir(CBP) (C∧N = ppy (1), dfppy (2)), have been synthesized and characterized. The PL spectra of 1 and 2 displayed substantially blue shifted phosphorescence relative to the corresponding Ir(C∧N)3 complexes. Electrochemical and theoretical studies showed that the CBP ligand functioned as a strong-field ancillary ligand, and the greater HOMO stabilization in comparison to that of the LUMO by the CBP ligand was responsible for the increase in band gap, leading to a large blue shift in phosphorescence.
URI
http://pubs.acs.org/doi/abs/10.1021/acs.organomet.5b00438http://hdl.handle.net/20.500.11754/26048
ISSN
0276-7333; 1520-6041
DOI
http://dx.doi.org/10.1021/acs.organomet.5b00438
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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