Mechanism of the quenching of the emission of substituted polypyridineruthenium(II) complexes by iron(III), chromium(III), and europium(III) ions

Lin, Chin-Tung; Boettcher, Wolfhardt; Chou, Mei H.; Creutz, Carol; Sutin, Norman

doi:10.1021/ja00437a020

Cited by 479 publications

(286 citation statements)

References 16 publications

Supporting

Mentioning

269

Contrasting

Unclassified

Order By: Relevance

“…For the complexes of the bpy and phen family it has been found that several excited state properties can be "tuned" by changing the nature of the central metal (Table 1) or the type of the ligands, or by appropriate substitutions on the ligand aromatic rings, Substitution of phen for bpy usually increases slightly the excited state lifetime and leaves almost unchanged the other excited state properties, but the introduction of different ligands may have profound consequences (4). Ligand substituents usually cause small changes in the excited state energy, but they can change significantly the excited state lifetime and the excited state reduction and oxidation potentialS (13,14). It is important to note that in these complexes the excitation causes a crossing of the redox potantials ( fig.…”

Section: Excited State Redox Properties Of Bipyridine and Phenanthrolmentioning

confidence: 99%

Excited state electron-transfer reactions of transition metal complexes

Balzani

Bolletta

Scandola

et al. 1979

Pure and Applied Chemistry

View full text Add to dashboard Cite

-The properties of excited states of transition metal complexes are briefly reviewed. The outer-sphere electron transfer reactions of the excited states of complexes containing 2,2'-bipyridine or 1,10-phenanthroline ligands are discussed in detail, with particular reference to electron ~ energy transfer quenching and conversion of light into chemical energy. The kinetic aspects of outer-sphere electron transfer reactions involving excited states are examined with particular reference to the so-called "Marcus inverted behavior" which is not obser:ved in most of the systems studied. The extension of the kinetic formalism used for electron transfer reactions to energy transfer processes yields a unified view of "classical" and " nonclassical" energy transfer behavior.

show abstract

Section: Excited State Redox Properties Of Bipyridine and Phenanthrolmentioning

confidence: 99%

Excited state electron-transfer reactions of transition metal complexes

Balzani

Bolletta

Scandola

et al. 1979

Pure and Applied Chemistry

View full text Add to dashboard Cite

show abstract

“…Some red shift of X max to 473 and 501 nm is observed for Ru(terpy)^+ and Ru(TPTZ)^+ (terpy = 2,2',2"^terpyridine; TPTZ = 2,4,6-tri(2-pyridyl-s-triazine)) (26). These effects are very modest but they show that alternation of the ligand structure is a reasonable approach.…”

Section: -1 -1mentioning

confidence: 97%

“…It being a shame to waste all those potentially perfectly good solar photons, approaches must be taken to improve the absorption characteristics of the medium, especially to the red; there is no lack of chromophores + , substitution of phen (=1,10-phenanthroline) for bpy or substitution on the polypyridyl rings has little effect on X max or the shape of the visible absorption envelope (26,27). Some red shift of X max to 473 and 501 nm is observed for Ru(terpy)^+ and Ru(TPTZ)^+ (terpy = 2,2',2"^terpyridine; TPTZ = 2,4,6-tri(2-pyridyl-s-triazine)) (26).…”

Section: -1 -1mentioning

confidence: 99%

Photochemical Determinants of the Efficiency of Photogalvanic Conversion of Solar Energy

Hoffman

Lichtin

1979

Solar Energy

View full text Add to dashboard Cite

A photogalvanic cell is a battery in which the cell solution absorbs light directly to generate species which, upon back reaction through an external circuit with the aid of suitable electrodes, produces electric power; photoactivation of the electrodes is 'not involved. The charge-carrying species have storage capacity if they are long-lived and can be prevented from engaging in degradativc back reactions in bulk solution. The efficiency of a photogalvanic cell for the conversion of photon energy into electrical energy is determined by photochemical and electrochemical factors. Among the latter are the choice of electrode materials and the kinetics of electron transfer at the heterogeneous surfaces. In this paper we examine '"the photochemical determinants of the efficiency of photogalvanic eel] operation: the absorption spectral characteristics of the cell solution, the efficiency of formation of separated charge carriers, and the lifetimes of the carriers toward back electron transfer. Modulation of bulk solution dynamics can be achieved by variation of the solution medium. The photochemical determinants are discussed with particular reference to the use of thionine or Ru(bpy)2+ as the light absorbing species.

show abstract

“…Platinum and palladium complexes with octaethylporphyrin (PtOEP 30, PdOEP 31) remain popular indicators due to their strong room temperature phosphorescence with a Taken from [141] b Nbpy0N-(6-aminohexyl)-4′-methyl-2,2′-bipyridine-4-carboxamide c L02,2-bipyridine (a) or 1,10-phenanthroline (b) and R0tert-butyl quantum yields of about 0.5 and 0.2, respectively, and long lifetimes under anoxic conditions (ca. 91 μs and ca.…”

Section: Metalloporphyrinsmentioning

confidence: 99%

Indicators for optical oxygen sensors

Borisov¹,

Quaranta²,

Klimant³

2012

Advances in Chemical Bioanalysis

View full text Add to dashboard Cite

Continuous monitoring of oxygen concentration is of great importance in many different areas of research which range from medical applications to food packaging. In the last three decades, significant progress has been made in the field of optical sensing technology and this review will highlight the one inherent to the development of oxygen indicators. The first section outlines the bioanalytical fields in which optical oxygen sensors have been applied. The second section gives the reader a comprehensive summary of the existing oxygen indicators with a critical highlight on their photophysical and sensing properties. Altogether, this review is meant to give the potential user a guide to select the most suitable oxygen indicator for the particular application of interest.

show abstract

Mechanism of the quenching of the emission of substituted polypyridineruthenium(II) complexes by iron(III), chromium(III), and europium(III) ions

Cited by 479 publications

References 16 publications

Excited state electron-transfer reactions of transition metal complexes

Excited state electron-transfer reactions of transition metal complexes

Photochemical Determinants of the Efficiency of Photogalvanic Conversion of Solar Energy

Indicators for optical oxygen sensors

Contact Info

Product

Resources

About