Journal
JOURNAL OF POROUS MATERIALS
Volume 21, Issue 1, Pages 45-52Publisher
SPRINGER
DOI: 10.1007/s10934-013-9745-8
Keywords
Mesoporous nano silica; Fluorescence sensitization; Optical gas sensor
Funding
- DRDO project [CFEES/ATEG/CARS/001/09-10]
- CFEES, DRDO
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Photoluminescence spectra of different concentration of laser grade dye stilbene dye solution and stilbene incorporated in mesoporous silica nanoparticle (MSN) had been studied and compared to determine maximum quantum yield. High quantum yield was obtained for 10(-3) M concentration stilbene incorporated MSN. This stilbene incorporated MSN silica is shown to give a fluorescence response to gaseous sulphur dioxide, with a response time of a few seconds and fluorescence emission intensity is proportional to the sulphur dioxide concentration, which are desirable properties for gas sensing. These features together make this MSN material very promising for optical sensing applications.
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