Internal conversion in poly(1-vinylnaphthalene)—IV. Photochemical processes in polymeric systems,☆☆

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Abstract

Quantum yields of all major photoprocesses have been measured on poly(1-vinylnaphthalene) in fluid solution. These measurements indicate that approx. 84% of the excitation energy is deactivated through internal conversion processes (S0 ↞ S1). Time resolved emission and absorbance measurements have been used to characterize the excited states in this system. It appears that several different types of singlet and triplet traps may be distinguished, one of which is the monomeric excited singlet. Existence of two different singlet excimers are postulated in order to interpret the time resolved emission data.

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Part III: Ref. [1].

☆☆

This paper represents one phase of research performed at the Jet Propulsion Laboratory sponsored by the National Aeronautics and Space Administration under the Contract NAS7-100.

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