Publication Details (including relevant citation information):
The Journal of Physical Chemistry C. 01/2007; 111(38):14247.
Zeolites have been identified as promising solid-state host materials for the design of alternative energy systems due to their ability to promote long-lived charge-separated states. Herein we investigate the ability of alkali metal cation-exchanged Y zeolites to mediate the formation of a spatially separated radical cation/radical anion pair by photoinduced electron migration. The chosen system is the electron-transfer reaction between photoexcited trans-anethole and co-incorporated 1,4-dicyanobenzene taking place within the internal cavities of the Y zeolite. The results from the investigation show that varying the alkali metal cation within the Y zeolite framework significantly influences the distance of electron migration and that the electrons travel farthest within dry NaY as compared to the other alkali metal cation-exchanged Y zeolites. The presence of intrazeolite water was also found to impede electron migration within the zeolite matrix.
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