Effect of pressure on the emission efficiencies of a series of phenylacetylene dendrimers

A. Zhu, P. Bharathi, J. O. White, H. G. Drickamer, J. S. Moore

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of pressure to 60 kbar has been measured on the emission intensity of five dendritic macromolecules. The emission efficiency decreases with increasing pressure in all cases, but to a greater extent for the larger dendrimers. An explanation is given in terms of changing efficiency of Förster energy transfer. The efficiency is expressed in terms of an effective "Förster distance" R0, a parameter that depends on the overlap between the donor emission and acceptor absorption. From the peak shifts, it appears that R0 decreases significantly with pressure, and an argument is given to explain why this decrease is more important for the larger dendrimers.

Original languageEnglish (US)
Pages (from-to)4606-4609
Number of pages4
JournalMacromolecules
Volume34
Issue number13
DOIs
StatePublished - Jun 19 2001

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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