Fluorescent diazapyrenium films and their response to dopamine

Mabel A. Cejas, Francisco Raymo

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The preparation of 2,7-diazapyrenium films on glass, quartz and silica was described. The transmission absorption spectra confirmed the presence of 2,7-diazapyrenium chromophores, but indicate sub-monolayer surface coverages. The amount of immobilized 2,7-diazapyrenium dications increases significantly when the polysiloxane formation steps of both procedures are performed either on the surface of silica nanoparticles or in the presence of Si(OEt) 4 on glass slides. The emission intensity of the 2,7-diazapyrenium dications decreases upon association of the surface-confined fluorophores with dopamine.

Original languageEnglish
Pages (from-to)5795-5802
Number of pages8
JournalLangmuir
Volume21
Issue number13
DOIs
StatePublished - Jun 21 2005

Fingerprint

dopamine
Dopamine
Silica
Silicon Dioxide
silicon dioxide
Glass
polysiloxanes
Fluorophores
glass
Chromophores
Siloxanes
chutes
Silicones
chromophores
Quartz
Absorption spectra
Monolayers
quartz
Nanoparticles
absorption spectra

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Fluorescent diazapyrenium films and their response to dopamine. / Cejas, Mabel A.; Raymo, Francisco.

In: Langmuir, Vol. 21, No. 13, 21.06.2005, p. 5795-5802.

Research output: Contribution to journalArticle

Cejas, Mabel A. ; Raymo, Francisco. / Fluorescent diazapyrenium films and their response to dopamine. In: Langmuir. 2005 ; Vol. 21, No. 13. pp. 5795-5802.
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