Triplet-state photophysics of naphthalene and .alpha.,.omega.-diphenylpolyenes included in heavy-cation-exchanged zeolites

• Published in: Journal of physical chemistry (1952) Vol. 94; no. 9; pp. 3391 - 3393
• Main Authors: Ramamurthy, V, Caspar, Jonathan V, Corbin, David R, Schlyer, Bruce D, Maki, August H
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.05.1990
• Subjects: 400500 - Photochemistry; AROMATICS; CHEMICAL REACTIONS; Chemistry; CONDENSED AROMATICS; DATA; DATA ANALYSIS; Exact sciences and technology; EXPERIMENTAL DATA; General and physical chemistry; HYDROCARBONS; INFORMATION; INORGANIC ION EXCHANGERS; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ION EXCHANGE MATERIALS; Ion-exchange; MATERIALS; MEASURING INSTRUMENTS; MEASURING METHODS; MINERALS; NAPHTHALENE; NUMERICAL DATA; ORGANIC COMPOUNDS; PHOTOCHEMICAL REACTIONS; POLYENES; Surface physical chemistry; ZEOLITES; Zeolites: preparations and properties; Polyenic compound; Aromatic compound; Matrix effect; Phosphorescence; Photochemical reaction; Exchange reaction; Photosensitizer; Chromophore
• ISSN: 0022-3654; 1541-5740
• DOI: 10.1021/j100372a011

Heavy-cation-exchanged zeolites offer a powerful new medium for observing external heavy-atom perturbation of organic triplet states. In this Letter the authors report the use of optically detected magnetic resonance measurements to determine the geometric mode of interaction between the perturbing heavy atom and naphthalene within the X- and Y-type faujasites exchanged with K{sup +}, Rb{sup +}, and Cs{sup +}. Building upon these results, the authors demonstrate the use of the heavy-cation-exchanged zeolites as spectroscopic matrices enabling the detection of triplet phosphorescence from a series of all-trans-{alpha},{omega}-diphenylpolyenes for which phosphorescence has not been previously observed.