Effects of Electronic Delocalization and Molecular Size on Intramolecular Proton Transfer.

Abstract

Well known 2-(2-hydroxyphenyl)benzoxazole 1, intramolecular hydrogen-bonded compound bis-2,5- (2-benzoxazolyl)phenol, 3, and the new polymers poly(m-(2-hydroxy)-phenylene benzobisoxazole) (mHPBO, 4) and poly(p-(2-hydroxy)-phenylene benzobisoxazole) (pHPBO, 5), are used to elucidate the effects of molecular size, conjugation length, and competition with excimer formation on excited-state intramolecular proton transfer (ESIPT). It is shown that whereas 1, 3 and 4 exhibit ESIPT, S does not. The results suggest that whereas molecular size does not appear to inhibit ESIPT, the competition with excimer formation and the extent of pi-electron delocalization both do. jg

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Document Details

Document Type
Technical Report
Publication Date
Jun 08, 1995
Accession Number
ADA295640

Entities

People

  • R. M. Tarkka
  • S. A. Jenekhe

Organizations

  • University of Rochester

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Spectra
  • Alkenes
  • Chemical Engineering
  • Chemistry
  • Competition
  • Engineering
  • Films
  • Hydrogen
  • Macromolecules
  • Materials Science
  • Military Research
  • Optical Absorption
  • Organic Materials
  • Picosecond Time
  • Polymers
  • Rigid Rod Polymers
  • Spectra

Fields of Study

  • Chemistry

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Powder metallurgy of Titanium alloys.
  • Quantum Chemistry

Technology Areas

  • Microelectronics