Transient decay studies of photophysical processes in aromatic polymers. 7. Studies of the molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers

D. Phillips; A. J. Roberts; G. Rumbles; I. Soutar

Transient decay studies of photophysical processes in aromatic polymers. 7. Studies of the molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers

D. Phillips, A. J. Roberts, G. Rumbles, I. Soutar

Research output: Contribution to journal › Article › peer-review

Abstract

A series of styrene homopolymers and styrene-butadiene block copolymers of type SB and SBSB in which the sequence length of styrene chromophores has been varied has been studied by time-resolved fluorescence techniques. It has been shown that the kinetic behavior of polystyrene fluorescence cannot be attributed to the existence of kinetically distinct monomeric species. The dual-exponential decays observed in the region of monomer emission are assigned to the influence of quenched monomer and excimer dissociation, respectively. The molar mass dependence of the polystyrene photophysics is best explained by models that assume energy migration to occur within (and, at low molecular weights, to be limited by) the chromophore sequence lengths. © 1983 American Chemical Society.

Original language	English
Pages (from-to)	1597-1601
Number of pages	5
Journal	Macromolecules
Volume	16
Issue number	10
Publication status	Published - 1983

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title = "Transient decay studies of photophysical processes in aromatic polymers. 7. Studies of the molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers",

abstract = "A series of styrene homopolymers and styrene-butadiene block copolymers of type SB and SBSB in which the sequence length of styrene chromophores has been varied has been studied by time-resolved fluorescence techniques. It has been shown that the kinetic behavior of polystyrene fluorescence cannot be attributed to the existence of kinetically distinct monomeric species. The dual-exponential decays observed in the region of monomer emission are assigned to the influence of quenched monomer and excimer dissociation, respectively. The molar mass dependence of the polystyrene photophysics is best explained by models that assume energy migration to occur within (and, at low molecular weights, to be limited by) the chromophore sequence lengths. {\textcopyright} 1983 American Chemical Society.",

author = "D. Phillips and Roberts, {A. J.} and G. Rumbles and I. Soutar",

year = "1983",

language = "English",

volume = "16",

pages = "1597--1601",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

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Transient decay studies of photophysical processes in aromatic polymers. 7. Studies of the molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers. / Phillips, D.; Roberts, A. J.; Rumbles, G. et al.
In: Macromolecules, Vol. 16, No. 10, 1983, p. 1597-1601.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Transient decay studies of photophysical processes in aromatic polymers. 7. Studies of the molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers

AU - Phillips, D.

AU - Roberts, A. J.

AU - Rumbles, G.

AU - Soutar, I.

PY - 1983

Y1 - 1983

N2 - A series of styrene homopolymers and styrene-butadiene block copolymers of type SB and SBSB in which the sequence length of styrene chromophores has been varied has been studied by time-resolved fluorescence techniques. It has been shown that the kinetic behavior of polystyrene fluorescence cannot be attributed to the existence of kinetically distinct monomeric species. The dual-exponential decays observed in the region of monomer emission are assigned to the influence of quenched monomer and excimer dissociation, respectively. The molar mass dependence of the polystyrene photophysics is best explained by models that assume energy migration to occur within (and, at low molecular weights, to be limited by) the chromophore sequence lengths. © 1983 American Chemical Society.

AB - A series of styrene homopolymers and styrene-butadiene block copolymers of type SB and SBSB in which the sequence length of styrene chromophores has been varied has been studied by time-resolved fluorescence techniques. It has been shown that the kinetic behavior of polystyrene fluorescence cannot be attributed to the existence of kinetically distinct monomeric species. The dual-exponential decays observed in the region of monomer emission are assigned to the influence of quenched monomer and excimer dissociation, respectively. The molar mass dependence of the polystyrene photophysics is best explained by models that assume energy migration to occur within (and, at low molecular weights, to be limited by) the chromophore sequence lengths. © 1983 American Chemical Society.

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M3 - Article

SN - 0024-9297

VL - 16

SP - 1597

EP - 1601

JO - Macromolecules

JF - Macromolecules

IS - 10

ER -

Transient decay studies of photophysical processes in aromatic polymers. 7. Studies of the molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers

Abstract

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