Photochemical hole burning of 1,4-dihydroxyanthraquinone in polymer glasses

Poly(ethylene), poly(methacrylic acid), and their copolymer systems

Toshiro Tani, Akira Itani, Yasuhiro Iino, Makoto Sakuda

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Photochemical hole spectra of 1,4-dihydroxyanthraquinone in polymer matrices at liquid helium temperatures were investigated by changing the main chain structure of polymer molecules systematically. Polymer molecules adopted here were poly(ethylene-co-methacrylic acid) (EMA) and its homopolymers poly (ethylene) (PE) and poly(methacrylic acid) (PMAA). Polarity of matrices or the number density of the electric dipoles mainly localized around the methacrylic acid units are decreased in the sequence of PMAA, EMA, and PE. Remarkable matrix effects on the hole-growth profiles were observed: The holewidth in the saturated regime decreased with decreasing the polarity of the polymer matrices from 1.4 cm-1 in PMAA through 0.15 cm-1 in EMA to 0.05 cm-1 in PE. The model of the photoinduced hole broadening is proposed in relation to the nature of two-level systems of the polymer glasses which exert influence on the holewidth. Dipole-dipole coupling is possibly a dominant interaction in the present systems. The results on the annealing properties of holewidth are also discussed.

Original languageEnglish
Pages (from-to)1272-1278
Number of pages7
JournalThe Journal of Chemical Physics
Volume88
Issue number2
Publication statusPublished - 1988
Externally publishedYes

Fingerprint

hole burning
copolymers
Polymers
ethylene
Copolymers
Glass
acids
glass
polymers
matrices
Polymer matrix
polarity
dipoles
Helium
Molecules
methacrylic acid
1,4-dihydroxyanthraquinone
Homopolymerization
liquid helium
electric dipoles

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Photochemical hole burning of 1,4-dihydroxyanthraquinone in polymer glasses : Poly(ethylene), poly(methacrylic acid), and their copolymer systems. / Tani, Toshiro; Itani, Akira; Iino, Yasuhiro; Sakuda, Makoto.

In: The Journal of Chemical Physics, Vol. 88, No. 2, 1988, p. 1272-1278.

Research output: Contribution to journalArticle

@article{da31f11301cf4b86965afdd110841ea3,
title = "Photochemical hole burning of 1,4-dihydroxyanthraquinone in polymer glasses: Poly(ethylene), poly(methacrylic acid), and their copolymer systems",
abstract = "Photochemical hole spectra of 1,4-dihydroxyanthraquinone in polymer matrices at liquid helium temperatures were investigated by changing the main chain structure of polymer molecules systematically. Polymer molecules adopted here were poly(ethylene-co-methacrylic acid) (EMA) and its homopolymers poly (ethylene) (PE) and poly(methacrylic acid) (PMAA). Polarity of matrices or the number density of the electric dipoles mainly localized around the methacrylic acid units are decreased in the sequence of PMAA, EMA, and PE. Remarkable matrix effects on the hole-growth profiles were observed: The holewidth in the saturated regime decreased with decreasing the polarity of the polymer matrices from 1.4 cm-1 in PMAA through 0.15 cm-1 in EMA to 0.05 cm-1 in PE. The model of the photoinduced hole broadening is proposed in relation to the nature of two-level systems of the polymer glasses which exert influence on the holewidth. Dipole-dipole coupling is possibly a dominant interaction in the present systems. The results on the annealing properties of holewidth are also discussed.",
author = "Toshiro Tani and Akira Itani and Yasuhiro Iino and Makoto Sakuda",
year = "1988",
language = "English",
volume = "88",
pages = "1272--1278",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

TY - JOUR

T1 - Photochemical hole burning of 1,4-dihydroxyanthraquinone in polymer glasses

T2 - Poly(ethylene), poly(methacrylic acid), and their copolymer systems

AU - Tani, Toshiro

AU - Itani, Akira

AU - Iino, Yasuhiro

AU - Sakuda, Makoto

PY - 1988

Y1 - 1988

N2 - Photochemical hole spectra of 1,4-dihydroxyanthraquinone in polymer matrices at liquid helium temperatures were investigated by changing the main chain structure of polymer molecules systematically. Polymer molecules adopted here were poly(ethylene-co-methacrylic acid) (EMA) and its homopolymers poly (ethylene) (PE) and poly(methacrylic acid) (PMAA). Polarity of matrices or the number density of the electric dipoles mainly localized around the methacrylic acid units are decreased in the sequence of PMAA, EMA, and PE. Remarkable matrix effects on the hole-growth profiles were observed: The holewidth in the saturated regime decreased with decreasing the polarity of the polymer matrices from 1.4 cm-1 in PMAA through 0.15 cm-1 in EMA to 0.05 cm-1 in PE. The model of the photoinduced hole broadening is proposed in relation to the nature of two-level systems of the polymer glasses which exert influence on the holewidth. Dipole-dipole coupling is possibly a dominant interaction in the present systems. The results on the annealing properties of holewidth are also discussed.

AB - Photochemical hole spectra of 1,4-dihydroxyanthraquinone in polymer matrices at liquid helium temperatures were investigated by changing the main chain structure of polymer molecules systematically. Polymer molecules adopted here were poly(ethylene-co-methacrylic acid) (EMA) and its homopolymers poly (ethylene) (PE) and poly(methacrylic acid) (PMAA). Polarity of matrices or the number density of the electric dipoles mainly localized around the methacrylic acid units are decreased in the sequence of PMAA, EMA, and PE. Remarkable matrix effects on the hole-growth profiles were observed: The holewidth in the saturated regime decreased with decreasing the polarity of the polymer matrices from 1.4 cm-1 in PMAA through 0.15 cm-1 in EMA to 0.05 cm-1 in PE. The model of the photoinduced hole broadening is proposed in relation to the nature of two-level systems of the polymer glasses which exert influence on the holewidth. Dipole-dipole coupling is possibly a dominant interaction in the present systems. The results on the annealing properties of holewidth are also discussed.

UR - http://www.scopus.com/inward/record.url?scp=36549098563&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36549098563&partnerID=8YFLogxK

M3 - Article

VL - 88

SP - 1272

EP - 1278

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 2

ER -