Temperature-dependent resonance Raman study of iodine-doped polyt( vinyl alcohol) films

Archita Sengupta; Mark Holtz; Edward L. Quitevis

doi:10.1016/S0009-2614(96)01187-6

Temperature-dependent resonance Raman study of iodine-doped polyt( vinyl alcohol) films

Archita Sengupta, Mark Holtz, Edward L. Quitevis

Chemistry and Biochemistry

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28 Scopus citations

Abstract

The resonance Raman spectrum of iodine-doped poly(vinyl alcohol) films was studied as a function temperature from 77 to 290 K. The main bands in the spectrum are assigned to fundamental and overtone bands of linear I^-₃ and I^-₅. The presence of combination bands in the spectrum is attributed to exciton coupling between these species in polyiodide chains. The low-temperature measurements allowed us to resolve new spectral features. At 77 K, the spectrum showed evidence for minor amounts of I₂ and isomers of the main polyiodide components. The optical properties of the PVA-iodine complex are not simple and cannot be assigned to any single polyiodide species.

Original language	English
Pages (from-to)	25-32
Number of pages	8
Journal	Chemical Physics Letters
Volume	263
Issue number	1-2
DOIs	https://doi.org/10.1016/S0009-2614(96)01187-6
State	Published - Dec 6 1996

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title = "Temperature-dependent resonance Raman study of iodine-doped polyt( vinyl alcohol) films",

abstract = "The resonance Raman spectrum of iodine-doped poly(vinyl alcohol) films was studied as a function temperature from 77 to 290 K. The main bands in the spectrum are assigned to fundamental and overtone bands of linear I-3 and I-5. The presence of combination bands in the spectrum is attributed to exciton coupling between these species in polyiodide chains. The low-temperature measurements allowed us to resolve new spectral features. At 77 K, the spectrum showed evidence for minor amounts of I2 and isomers of the main polyiodide components. The optical properties of the PVA-iodine complex are not simple and cannot be assigned to any single polyiodide species.",

author = "Archita Sengupta and Mark Holtz and Quitevis, {Edward L.}",

note = "Funding Information: This research was partially supported by the Robert A. Welch Foundation(D -1019)to ELQ and by the Donors of the PetroleumR esearchF und of the AmericanC hemicalS ocietyto MH.",

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T1 - Temperature-dependent resonance Raman study of iodine-doped polyt( vinyl alcohol) films

AU - Sengupta, Archita

AU - Holtz, Mark

AU - Quitevis, Edward L.

N1 - Funding Information: This research was partially supported by the Robert A. Welch Foundation(D -1019)to ELQ and by the Donors of the PetroleumR esearchF und of the AmericanC hemicalS ocietyto MH.

PY - 1996/12/6

Y1 - 1996/12/6

N2 - The resonance Raman spectrum of iodine-doped poly(vinyl alcohol) films was studied as a function temperature from 77 to 290 K. The main bands in the spectrum are assigned to fundamental and overtone bands of linear I-3 and I-5. The presence of combination bands in the spectrum is attributed to exciton coupling between these species in polyiodide chains. The low-temperature measurements allowed us to resolve new spectral features. At 77 K, the spectrum showed evidence for minor amounts of I2 and isomers of the main polyiodide components. The optical properties of the PVA-iodine complex are not simple and cannot be assigned to any single polyiodide species.

AB - The resonance Raman spectrum of iodine-doped poly(vinyl alcohol) films was studied as a function temperature from 77 to 290 K. The main bands in the spectrum are assigned to fundamental and overtone bands of linear I-3 and I-5. The presence of combination bands in the spectrum is attributed to exciton coupling between these species in polyiodide chains. The low-temperature measurements allowed us to resolve new spectral features. At 77 K, the spectrum showed evidence for minor amounts of I2 and isomers of the main polyiodide components. The optical properties of the PVA-iodine complex are not simple and cannot be assigned to any single polyiodide species.

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DO - 10.1016/S0009-2614(96)01187-6

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SN - 0009-2614

VL - 263

SP - 25

EP - 32

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-2

ER -

Temperature-dependent resonance Raman study of iodine-doped polyt( vinyl alcohol) films

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