Accession Number : ADA305228

Title :   Exciton Dynamics in Poly(p-pyridyl Vinylene).

Descriptive Note : Technical rept.,

Corporate Author : OHIO STATE UNIV COLUMBUS DEPT OF PHYSICS

Personal Author(s) : Jessen, S. W. ; Blatchford, J. W. ; Wang, Y. Z. ; Gebler, D. D. ; Lin, L. B.

PDF Url : ADA305228

Report Date : 01 MAR 1996

Pagination or Media Count : 17

Abstract : We present results of picosecond photoinduced absorption (PA) and time resolved photoluminescence studies on solid and solution forms of poly(p-pyridyl vinylene). The nearly identical PA response of all forms of the polymer reflects the generation of the same primary photoexcitation, a Coulombically bound intrachain singlet exciton, and the absence of exotic species such as interchain excimers. The time dependence of the PA points to direct intersystem crossing as the origin of triplet excitons, ruling out generation of free carriers as a precursor to exciton formation.

Descriptors :   *PHOTOLUMINESCENCE, *POLYVINYLIDENES, CROSSLINKING(CHEMISTRY), RADIATION ABSORPTION, EXCITONS.

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE