Template-free synthesis of organically modified silica mesoporous thin films for TNT sensing

Adem Yildirim, Hulya Budunoglu, Hakan Deniz, Mustafa O. Guler, Mehmet Bayindir

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In this paper, we present a facile, template-free sol-gel method to produce fluorescent and highly mesoporous organically modified silica (ORMOSIL) thin films for vapor phase sensing of TNT. An alkyltrifunctional, methyltrimethoxysilane MTMS precursor was used to impart hydrophobic behavior to gel network in order to form the spring back effect. In this way, porous films (up to 74% porosity) are obtained at ambient conditions. Fluorescent molecules are physically encapsulated in the ORMOSIL network during gelation. Fluorescence of the films was found to be stable even after 3 months, proving the successful fixing of the dye into the ORMOSIL network. The functional ORMOSIL thin films exhibited high fluorescence quenching upon exposition to TNT and DNT vapor. Fluorescence quenching responses of the films are thickness-dependent and higher fluorescence quenching efficiency was observed for the thinnest film (8.6% in 10 s). The prepared mesoporous ORMOSIL thin films have great potential in new sensor and catalysis applications.

Original languageEnglish (US)
Pages (from-to)2892-2897
Number of pages6
JournalACS Applied Materials and Interfaces
Volume2
Issue number10
DOIs
StatePublished - Oct 27 2010
Externally publishedYes

Fingerprint

Trinitrotoluene
Silicon Dioxide
Silica
Thin films
Fluorescence
Quenching
2,6-dinitrotoluene
Vapors
Gelation
Sol-gel process
Catalysis
Film thickness
Coloring Agents
Gels
Dyes
Porosity
Molecules
Sensors

Keywords

  • fluorescence quenching
  • mesoporous materials
  • ORMOSIL
  • thin films
  • TNT detection

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Template-free synthesis of organically modified silica mesoporous thin films for TNT sensing. / Yildirim, Adem; Budunoglu, Hulya; Deniz, Hakan; Guler, Mustafa O.; Bayindir, Mehmet.

In: ACS Applied Materials and Interfaces, Vol. 2, No. 10, 27.10.2010, p. 2892-2897.

Research output: Contribution to journalArticle

Yildirim, Adem ; Budunoglu, Hulya ; Deniz, Hakan ; Guler, Mustafa O. ; Bayindir, Mehmet. / Template-free synthesis of organically modified silica mesoporous thin films for TNT sensing. In: ACS Applied Materials and Interfaces. 2010 ; Vol. 2, No. 10. pp. 2892-2897.
@article{151ded843fe4401aae89fa65a767a06b,
title = "Template-free synthesis of organically modified silica mesoporous thin films for TNT sensing",
abstract = "In this paper, we present a facile, template-free sol-gel method to produce fluorescent and highly mesoporous organically modified silica (ORMOSIL) thin films for vapor phase sensing of TNT. An alkyltrifunctional, methyltrimethoxysilane MTMS precursor was used to impart hydrophobic behavior to gel network in order to form the spring back effect. In this way, porous films (up to 74{\%} porosity) are obtained at ambient conditions. Fluorescent molecules are physically encapsulated in the ORMOSIL network during gelation. Fluorescence of the films was found to be stable even after 3 months, proving the successful fixing of the dye into the ORMOSIL network. The functional ORMOSIL thin films exhibited high fluorescence quenching upon exposition to TNT and DNT vapor. Fluorescence quenching responses of the films are thickness-dependent and higher fluorescence quenching efficiency was observed for the thinnest film (8.6{\%} in 10 s). The prepared mesoporous ORMOSIL thin films have great potential in new sensor and catalysis applications.",
keywords = "fluorescence quenching, mesoporous materials, ORMOSIL, thin films, TNT detection",
author = "Adem Yildirim and Hulya Budunoglu and Hakan Deniz and Guler, {Mustafa O.} and Mehmet Bayindir",
year = "2010",
month = "10",
day = "27",
doi = "10.1021/am100568c",
language = "English (US)",
volume = "2",
pages = "2892--2897",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "10",

}

TY - JOUR

T1 - Template-free synthesis of organically modified silica mesoporous thin films for TNT sensing

AU - Yildirim, Adem

AU - Budunoglu, Hulya

AU - Deniz, Hakan

AU - Guler, Mustafa O.

AU - Bayindir, Mehmet

PY - 2010/10/27

Y1 - 2010/10/27

N2 - In this paper, we present a facile, template-free sol-gel method to produce fluorescent and highly mesoporous organically modified silica (ORMOSIL) thin films for vapor phase sensing of TNT. An alkyltrifunctional, methyltrimethoxysilane MTMS precursor was used to impart hydrophobic behavior to gel network in order to form the spring back effect. In this way, porous films (up to 74% porosity) are obtained at ambient conditions. Fluorescent molecules are physically encapsulated in the ORMOSIL network during gelation. Fluorescence of the films was found to be stable even after 3 months, proving the successful fixing of the dye into the ORMOSIL network. The functional ORMOSIL thin films exhibited high fluorescence quenching upon exposition to TNT and DNT vapor. Fluorescence quenching responses of the films are thickness-dependent and higher fluorescence quenching efficiency was observed for the thinnest film (8.6% in 10 s). The prepared mesoporous ORMOSIL thin films have great potential in new sensor and catalysis applications.

AB - In this paper, we present a facile, template-free sol-gel method to produce fluorescent and highly mesoporous organically modified silica (ORMOSIL) thin films for vapor phase sensing of TNT. An alkyltrifunctional, methyltrimethoxysilane MTMS precursor was used to impart hydrophobic behavior to gel network in order to form the spring back effect. In this way, porous films (up to 74% porosity) are obtained at ambient conditions. Fluorescent molecules are physically encapsulated in the ORMOSIL network during gelation. Fluorescence of the films was found to be stable even after 3 months, proving the successful fixing of the dye into the ORMOSIL network. The functional ORMOSIL thin films exhibited high fluorescence quenching upon exposition to TNT and DNT vapor. Fluorescence quenching responses of the films are thickness-dependent and higher fluorescence quenching efficiency was observed for the thinnest film (8.6% in 10 s). The prepared mesoporous ORMOSIL thin films have great potential in new sensor and catalysis applications.

KW - fluorescence quenching

KW - mesoporous materials

KW - ORMOSIL

KW - thin films

KW - TNT detection

UR - http://www.scopus.com/inward/record.url?scp=79151480455&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79151480455&partnerID=8YFLogxK

U2 - 10.1021/am100568c

DO - 10.1021/am100568c

M3 - Article

VL - 2

SP - 2892

EP - 2897

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 10

ER -