A Self-Assembled Organic/Metal Junction for Water Photo-Oxidation

We report the in situ self-assembly of TTF, TTF center dot+, and BF4- or PF6- into p-type semiconductors on the surface of Pt microparticles dispersed in water/acetonitrile mixtures. The visible light photoactivation of these self-assemblies leads to water oxidation forming O-2 and H+, with an efficiency of 100% with respect to the initial concentration of TTF center dot+. TTF center dot+ is then completely reduced to TTF upon photoreduction with water. The Pt microparticles act as floating microelectrodes whose Fermi level is imposed by the different redox species in solution; here predominantly TTF, TTF center dot+, and HTTF+, which furthermore showed no signs of decomposition in solution.


Publié dans:
Journal Of The American Chemical Society, 141, 16, 6765-6774
Année
Apr 24 2019
Publisher:
Washington, AMER CHEMICAL SOC
ISSN:
0002-7863
Mots-clefs:
Laboratoires:




 Notice créée le 2019-06-18, modifiée le 2019-06-25


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