Photostability of Silylated Coumarin Dyes in Polyceram Hosts

T. Suratwala; Z. Gardlund; K. Davidson; D. R. Uhlmann; S. Bonilla; N. Peyghambarian

doi:10.1007/BF02436970

Photostability of Silylated Coumarin Dyes in Polyceram Hosts

T. Suratwala, Z. Gardlund, K. Davidson, D. R. Uhlmann, S. Bonilla, N. Peyghambarian

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Numerous silylated coumarin dyes have been incorporated within silica : polydimethylsiloxane Polyceram hosts using the sol-gel process to form crack-free, polishable monoliths. The use of silylated laser dyes allows for covalently bonding the laser dyes to their hosts. Photostability of the samples was evaluated by measuring the decrease in the dye absorption in the Polyceram upon ultraviolet lamp exposure and by monitoring the fluorescence intensity as function of pump pulses from a N₂ laser at 337 nm. Both methods showed a significant improvement in photo- and thermal-stability of the silylated dye Polyceram compared to that of the unsilylated dye Polyceram at a dye : Si mole ratio of 10^-4: 1. The improved stability is attributed to the immobilization and higher degree of caging of the silylated dye Polyceram with respect to the unsilylated dye Polyceram.

Original language	English (US)
Pages (from-to)	973-978
Number of pages	6
Journal	Journal of Sol-Gel Science and Technology
Volume	8
Issue number	1-3
DOIs	https://doi.org/10.1007/BF02436970
State	Published - 1997

Keywords

Laser dyes
Photostability
Polyceram
Silylated dyes
Solid-state dye laser

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Biomaterials
Condensed Matter Physics
Materials Chemistry

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10.1007/BF02436970

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title = "Photostability of Silylated Coumarin Dyes in Polyceram Hosts",

abstract = "Numerous silylated coumarin dyes have been incorporated within silica : polydimethylsiloxane Polyceram hosts using the sol-gel process to form crack-free, polishable monoliths. The use of silylated laser dyes allows for covalently bonding the laser dyes to their hosts. Photostability of the samples was evaluated by measuring the decrease in the dye absorption in the Polyceram upon ultraviolet lamp exposure and by monitoring the fluorescence intensity as function of pump pulses from a N2 laser at 337 nm. Both methods showed a significant improvement in photo- and thermal-stability of the silylated dye Polyceram compared to that of the unsilylated dye Polyceram at a dye : Si mole ratio of 10-4: 1. The improved stability is attributed to the immobilization and higher degree of caging of the silylated dye Polyceram with respect to the unsilylated dye Polyceram.",

keywords = "Laser dyes, Photostability, Polyceram, Silylated dyes, Solid-state dye laser",

author = "T. Suratwala and Z. Gardlund and K. Davidson and Uhlmann, {D. R.} and S. Bonilla and N. Peyghambarian",

year = "1997",

doi = "10.1007/BF02436970",

language = "English (US)",

volume = "8",

pages = "973--978",

journal = "Journal of Sol-Gel Science and Technology",

issn = "0928-0707",

publisher = "Springer Netherlands",

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}

TY - JOUR

T1 - Photostability of Silylated Coumarin Dyes in Polyceram Hosts

AU - Suratwala, T.

AU - Gardlund, Z.

AU - Davidson, K.

AU - Uhlmann, D. R.

AU - Bonilla, S.

AU - Peyghambarian, N.

PY - 1997

Y1 - 1997

N2 - Numerous silylated coumarin dyes have been incorporated within silica : polydimethylsiloxane Polyceram hosts using the sol-gel process to form crack-free, polishable monoliths. The use of silylated laser dyes allows for covalently bonding the laser dyes to their hosts. Photostability of the samples was evaluated by measuring the decrease in the dye absorption in the Polyceram upon ultraviolet lamp exposure and by monitoring the fluorescence intensity as function of pump pulses from a N2 laser at 337 nm. Both methods showed a significant improvement in photo- and thermal-stability of the silylated dye Polyceram compared to that of the unsilylated dye Polyceram at a dye : Si mole ratio of 10-4: 1. The improved stability is attributed to the immobilization and higher degree of caging of the silylated dye Polyceram with respect to the unsilylated dye Polyceram.

AB - Numerous silylated coumarin dyes have been incorporated within silica : polydimethylsiloxane Polyceram hosts using the sol-gel process to form crack-free, polishable monoliths. The use of silylated laser dyes allows for covalently bonding the laser dyes to their hosts. Photostability of the samples was evaluated by measuring the decrease in the dye absorption in the Polyceram upon ultraviolet lamp exposure and by monitoring the fluorescence intensity as function of pump pulses from a N2 laser at 337 nm. Both methods showed a significant improvement in photo- and thermal-stability of the silylated dye Polyceram compared to that of the unsilylated dye Polyceram at a dye : Si mole ratio of 10-4: 1. The improved stability is attributed to the immobilization and higher degree of caging of the silylated dye Polyceram with respect to the unsilylated dye Polyceram.

KW - Laser dyes

KW - Photostability

KW - Polyceram

KW - Silylated dyes

KW - Solid-state dye laser

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JF - Journal of Sol-Gel Science and Technology

IS - 1-3

ER -

Photostability of Silylated Coumarin Dyes in Polyceram Hosts

Abstract

Keywords

ASJC Scopus subject areas

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