ELECTROCHEMILUMINESCENCE QUANTUM YIELD OF SOME RU(II) POLYPYRIDINE COMPLEXES

The electrochemiluminescence quantum yield (φ{symbol}ecl) is a parameter difficult to measure experimentally, but significant in the comprehension of electron transfer mechanisms. We report a new experimental method which tries to control the influence of different parameters (double layer charge, 'geometric' factors, efficiencies of electrolytic processes, etc.) in determining the φ{symbol}ecl values. This method does not allow absolute value measurements but requires the use of a standard. The φ{symbol}ecl obtained for some Ru(II) polypyridine complexes are reported and both the results and the validity of the method are discussed. © 1990.