Spectral differences between enantiomeric and racemic tris(bipyridine)ruthenium(II) on layered clays: probable causes

Kamat, Prashant V.; Gopidas, Karical R.; Mukherjee, Tulsi; Joshi, Vishwas N.; Kotkar, Dilip; Pathak, Vinit S.; Ghosh, Pushpito K.

doi:10.1021/j100177a074

Cited by 35 publications

(29 citation statements)

References 5 publications

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“…Metal bipyridine complexes (M ¼ Ru, Co, Fe, etc) have been reported to be intercalated into clay colloids [38][39][40][41]. This possibility is shown by the electrochemical quartz-crystal-microbalance spectra (EQCM) measured for 5 mM of Ru(bpy) 2þ 3 in aqueous KCl with a goldsputtered quartz crystal electrode (f o ¼ 9 MHz) (Fig.…”

Section: Resultsmentioning

confidence: 93%

Can clay emit light? Ru(bpy)32+-modified clay colloids and their application in the detection of glucose

Liang

Chang

Wang

2003

Journal of Electroanalytical Chemistry

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Section: Resultsmentioning

confidence: 93%

Can clay emit light? Ru(bpy)32+-modified clay colloids and their application in the detection of glucose

Liang

Chang

Wang

2003

Journal of Electroanalytical Chemistry

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“…The immobilisation of luminescent metal complexes in rigid matrixes has become an intense area of investigation because of its application in solar energy conversion, LED displays and oxygen sensing, among others [11][12][13][14][15]. Zirconium phosphate (Zr (HPO 4 ) 2 •H 2 O, ZrP) has been used to immobilise tris(2,2'-bipyridyl)ruthenium(II) (Ru-(bpy) 3 2+ ) resulting in interesting photophysical characteristics [16].…”

Section: Introductionmentioning

confidence: 99%

SERS property of Co complex on boron nitride nanosheets/silver nanoparticles aggregates and photophysical characterisation of interactions among Co complex ion-exchanged within zirconium phosphate

Huo

Zhang

2017

Journal of Experimental Nanoscience

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The Co(II) complex of [Co(bpy) 2 (NO 3 )]Cl¢3H 2 O, bpy = 2,2'-bipyridine, has been synthesised by the solution crystallisation method. The boron nitride nanosheets/silver nanoparticles/[Co(bpy) 2 (NO 3 )] Cl¢3H 2 O nanoaggregate was prepared in order to better analyse the adsorption orientation of the cobalt complex on the surface of silver nanoparticles. The result of the surface-enhanced Raman scattering measurement indicates that the molecular plane of the cobalt complex presents a tilted orientation with respect to the surface of silver nanoparticles. The luminescence property of [Co(bpy) 2 (NO 3 )] + two-dimensional arrangements within the layers of zirconium phosphate (ZrP) was also investigated. Steady-state luminescence spectra of the [Co(bpy) 2 (NO 3 )] + -exchanged ZrP materials show an increase in the luminescence intensity.

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“…The immobilization of luminescent metal complexes in rigid matrices has become an intense area of investigation in the past few years due to its application in solar energy conversion, LED displays, and oxygen sensing, among others 1–5. Matrices like zeolites,6–8 gels,9 clays,10 and micelles11 have been used to immobilize metal complexes resulting in interesting photophysical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Photophysical Characterization of the Interactions among Tris(2,2′-bipyridyl)ruthenium(II) Complexes Ion-Exchanged within Zirconium Phosphate

Martí

Colón

2010

Inorg. Chem.

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We studied the structures, luminescence and self-quenching properties of tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+) two-dimensional arrangements within the layers of zirconium phosphate (ZrP). The intercalation of Ru(bpy)32+ was accomplished using a hydrated form of zirconium phosphate ZrP. Varying the Ru(bpy)32+:ZrP intercalation ratio, different Ru(bpy)32+-exchanged ZrP loading levels were achieved. The ion exchange of Ru(bpy)32+ within ZrP produces a red shift in the MLCT absorption band of the complex from 452 nm in aqueous solution to 460 nm in ZrP. Steady state luminescence spectra of the Ru(bpy)32+-exchanged ZrP materials show an increase in the luminescence intensity with an increase in the Ru(bpy)32+ loading level until ca. 0.77 M, where subsequent increases in the loading level produce a decrease in the luminescence (self-quenching region). Time-resolved luminescence measurements are consistent with the steady state luminescence measurements. Analysis of the time domain luminescence measurements in loadings higher than 0.77 M leads to the determination of a collisional quenching rate constant of (1.67 ± 0.05) × 106 M−1 s−1. Stern-Volmer indicates that static analysis of the luminescence quantum yield of Ru(bpy)32+-exchanged ZrP materials quenching is also involved in the Ru(bpy)32+ self-quenching mechanism. The quantum yield data behavior might be explained by a model that takes into account collisional quenching and the quasi-static Perrin mechanism. The calculation yields a quenching sphere of action of 14.8 Å, which is slightly larger that the collisional radii of two Ru(bpy)32+ ions (12.2 Å), as predicted by the model.

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Spectral differences between enantiomeric and racemic tris(bipyridine)ruthenium(II) on layered clays: probable causes

Cited by 35 publications

References 5 publications

Can clay emit light? Ru(bpy)32+-modified clay colloids and their application in the detection of glucose

Can clay emit light? Ru(bpy)32+-modified clay colloids and their application in the detection of glucose

SERS property of Co complex on boron nitride nanosheets/silver nanoparticles aggregates and photophysical characterisation of interactions among Co complex ion-exchanged within zirconium phosphate

Photophysical Characterization of the Interactions among Tris(2,2′-bipyridyl)ruthenium(II) Complexes Ion-Exchanged within Zirconium Phosphate

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