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Multiexponential fluorescence of synthetic polymers

Multiexponential fluorescence of synthetic polymers
Multiexponential fluorescence of synthetic polymers

Intramolecular excimer formation in a number of aromatic containing polymers has been investigated using high resolution time-resolved fluorescence spectroscopy. The generally accepted kinetic scheme for intermolecular excimer formation in small molecule systems has been shown to be inappropriate for polymers such as poly(1-vinyl naphthalene) and poiyacenaphthylene. An alternative scheme, involving two kinetically distinct monomer groups has been proposed. Using a series of copolymers with varying chromophore contents the rate constants for the various excited state decay processes were evaluated. This procedure is shown to be preferable to the single concentration methods previously employed in kinetic studies on aromatic polymers. The emission from poly(N-vinylcarbazole) is suggested to be due, to three kinetically distinct excimer groups. The interconversion between these is discussed.

University of Southampton
Roberts, Anthony John
Roberts, Anthony John

Roberts, Anthony John (1980) Multiexponential fluorescence of synthetic polymers. University of Southampton, Doctoral Thesis.

Record type: Thesis (Doctoral)

Abstract

Intramolecular excimer formation in a number of aromatic containing polymers has been investigated using high resolution time-resolved fluorescence spectroscopy. The generally accepted kinetic scheme for intermolecular excimer formation in small molecule systems has been shown to be inappropriate for polymers such as poly(1-vinyl naphthalene) and poiyacenaphthylene. An alternative scheme, involving two kinetically distinct monomer groups has been proposed. Using a series of copolymers with varying chromophore contents the rate constants for the various excited state decay processes were evaluated. This procedure is shown to be preferable to the single concentration methods previously employed in kinetic studies on aromatic polymers. The emission from poly(N-vinylcarbazole) is suggested to be due, to three kinetically distinct excimer groups. The interconversion between these is discussed.

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Published date: 1980

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Local EPrints ID: 459175
URI: http://eprints.soton.ac.uk/id/eprint/459175
PURE UUID: 0ae5ef7d-cb89-418d-a04a-67e1ede0f8e3

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Date deposited: 04 Jul 2022 17:05
Last modified: 04 Jul 2022 17:05

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Author: Anthony John Roberts

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