Positron annihilation studies of a conjugated polymer

W. F. Huang, Z. J. Xu, T. C. Chung, K. C. Lim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Lineshapes of the Doppler broadened annihilation radiation (DBAR) of a conjugated polymer polydiacetylene, 4-butoxycarbonylmethylurethane (P-4BCMU), in its amorphous state, were measured over the temperature range of 30 to 190°C. A differential-scanning-calorimeter (DSC) was used to correlate the transition temperatures. The DBAR lineshapes show a distinct change during the structural transitions of the polymer. A two states trapping model is used to qualitatively describe the temperature dependence of the lineshape. The nature of formation of the trapped states of positrons above Tc, through the interplay of electronic structure/conformation change, is discussed.

Original languageEnglish (US)
Pages (from-to)411-414
Number of pages4
JournalPhysics Letters A
Volume129
Issue number7
DOIs
StatePublished - Jun 6 1988

Fingerprint

positron annihilation
polymers
radiation
calorimeters
positrons
transition temperature
trapping
electronic structure
temperature dependence
scanning
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Huang, W. F. ; Xu, Z. J. ; Chung, T. C. ; Lim, K. C. / Positron annihilation studies of a conjugated polymer. In: Physics Letters A. 1988 ; Vol. 129, No. 7. pp. 411-414.
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Positron annihilation studies of a conjugated polymer. / Huang, W. F.; Xu, Z. J.; Chung, T. C.; Lim, K. C.

In: Physics Letters A, Vol. 129, No. 7, 06.06.1988, p. 411-414.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Huang, W. F.

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AU - Chung, T. C.

AU - Lim, K. C.

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