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

doi:10.1021/ma001825w

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 journal › Article › peer-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 language	English (US)
Pages (from-to)	4606-4609
Number of pages	4
Journal	Macromolecules
Volume	34
Issue number	13
DOIs	https://doi.org/10.1021/ma001825w
State	Published - Jun 19 2001

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma001825w

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AU - Zhu, A.

AU - Bharathi, P.

AU - White, J. O.

AU - Drickamer, H. G.

AU - Moore, J. S.

PY - 2001/6/19

Y1 - 2001/6/19

N2 - 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.

AB - 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.

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JO - Macromolecules

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ER -

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

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