Silylated Coumarin Dyes in Sol-Gel Hosts. 1. Structure and Environmental Factors on Fluorescent Properties

T. Suratwala, Z. Gardlund, K. Davidson, Donald R Uhlmann, J. Watson, Nasser N Peyghambarian

Research output: Contribution to journalArticle

113 Citations (Scopus)

Abstract

Several silylated coumarin dyes with different linkages and degrees of functionality have been synthesized and incorporated in both SiO2 xerogels and various solvent hosts. The absorption and fluorescence spectra were examined to explore selected structural and environmental effects on the optical properties of these dyes. Silylated dyes (also referred to as grafted or functionalized dyes) are dye molecules that have been chemically altered to provide alkoxysilane functionality allowing the active molecule to be covalently bonded to the host. Silylation of dye molecules had little effect on the absorption and fluorescence spectra in neutral solvent environments. The optical spectra of silylated dyes compared to those of their conventional counterpart were less influenced by the local chemical environment (e.g., pH) and thus allow for greater control and stability of the fluorescent properties of the dyes in different host environments. Spectroscopy during the drying/gelling of a derCoum xerogel film containing a silylated coumarin dye illustrate changes in the chemical forms of the dye molecules associated with changes in the local chemical environment of the dye.

Original languageEnglish (US)
Pages (from-to)190-198
Number of pages9
JournalChemistry of Materials
Volume10
Issue number1
StatePublished - Jan 1998

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Sol-gels
Coloring Agents
Dyes
Xerogels
Molecules
Fluorescence
coumarin
Fluorescent Dyes
Environmental impact
Drying
Optical properties
Spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Materials Chemistry

Cite this

Silylated Coumarin Dyes in Sol-Gel Hosts. 1. Structure and Environmental Factors on Fluorescent Properties. / Suratwala, T.; Gardlund, Z.; Davidson, K.; Uhlmann, Donald R; Watson, J.; Peyghambarian, Nasser N.

In: Chemistry of Materials, Vol. 10, No. 1, 01.1998, p. 190-198.

Research output: Contribution to journalArticle

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