Rhodamine complexes. Preparation, photophysical properties, and the structure of (Rh(rhodamine)(CO)(P(tol) sub 3 ) sub 2 )(SbF sub 6 )

Journal Article · Thu Feb 23 00:00:00 EST 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100341a014· OSTI ID:5061669

Thorn, D L ^[1]; Fultz, W C ^[2]

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1. E.I. du Pont de Nemours and Co., Wilmington, DE (USA)
2. J.M. Huber Corp., Haver de Grace, MD (USA)

The fluorescent dye rhodamine B has been used as a ligand, binding through its carboxylate group, in complexes of Rh(I), Ir(I), Ir(III), and Pt(II). Slight alteration in the absorption spectrum of the rhodamine chromophore results from its coordination, but profound changes are observed in the luminescence intensity of the coordinated chromophore. In compounds where the rhodamine is bound to a readily oxidized metal center (Rh(I), Ir(I), H{sub 2}Ir(III)) its fluorescence is strongly quenched, but when it is bound to a less easily oxidized metal center (Ir(III)) the rhodamine fluorescence remains intense. From these and other observations we propose electron transfer as the excited-state quenching mechanism. The structure of the title compound reveals an unexpected packing arrangement, best described as linear chains of Rh-rhodamine cations held together by rhodamine-rhodamine interactions.

• OSTI ID: 5061669
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 93:4; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
IRIDIUM COMPLEXES
PHOTOCHEMICAL REACTIONS
PLATINUM COMPLEXES
RHODAMINES
RHODIUM COMPLEXES
ABSORPTION SPECTROSCOPY
ENERGY-LEVEL TRANSITIONS
FLUORESCENCE SPECTROSCOPY
AMINES
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
COMPLEXES
DYES
EMISSION SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
REAGENTS
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES
400500* - Photochemistry