ic6b01827_si_004.cif (18.5 kB)
Download fileTuning the Phosphorescence and Solid State Luminescence of Triarylborane-Functionalized Acetylacetonato Platinum Complexes
dataset
posted on 2016-11-21, 19:38 authored by George Rajendra Kumar, Pakkirisamy ThilagarA new series of luminescent
cyclometalated platinum complexes with triarylborane-functionalized
acetylacetonate ligands is reported. The complexes exhibit solid state
luminescence and phosphorescence under ambient conditions. The luminescence
color can be tuned from green to red by varying the cyclometalating
ligand [2-phenylpyridine (for 1 and 2),
2-thiophenylpyridine (for 3 and 4), 2-thianapthenylpyridine
(for 5 and 6)]. The luminescence originates
from mixed 3MLCT/3IL [MLCT, metal to ligand
charge transfer; IL, intraligand] states of square planar platinum
and borane moieties. The π spacer (phenyl or duryl) which connects
the boryl and platinum entities has a significant role in determining
the photoluminescence efficiency. The bulky duryl spacer in 2, 4, and 6 significantly reduces
π–π stacking of the square planar platinum moiety
in the solid state and provides a rigid backbone, thereby increasing
their quantum yield significantly. The role of Lewis-acidic borane
on the photoluminescence features is evaluated by fluoride binding
experiments.
History
Usage metrics
Categories
Keywords
2-ambient conditionsphotoluminescence efficiencyphotoluminescence featuresplatinum entitiesluminescence colorligand charge transferduryl spacercomplexes exhibitfluoride binding experimentsstate luminescencetriarylborane-functionalized acetylacetonate ligandsborane moietiesroleLewis-acidic boraneTriarylborane-Functionalized Acetylacetonato Platinum Complexescyclometalated platinum complexesMLCTSolid State LuminescenceILplatinum moietyπ spacer