Abstract
The successful incorporation of chromophores in a sol-gel matrix requires a careful study of their interaction with the gel environment. Photoacoustic spectroscopy is used to probe chemical changes in the direct neighborhood of dopant molecules in a silica-based sol gel during times of evolution up to 100 times the gelation time. Studies of different chromophores such as β-carotene (β-Car.) and copper phthalocyanine (Cu-Pht.) show a size dependent steric hindrance effect as well as chromophore relaxation phenomena within the gel pores. Three main phases of evolution of the medium are distinguished. The stability of the chromophores is discussed and the results compared to FTIR spectra over time.
| Original language | English |
|---|---|
| Pages (from-to) | 57-69 |
| Number of pages | 13 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 258 |
| Issue number | 1 |
| DOIs | |
| State | Published - Nov 1 1999 |
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ASJC Scopus subject areas
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials
Cite this
Caging interactions between a dopant chromophore and the sol-gel matrix. / Puccetti, Germain; Leblanc, Roger.
In: Journal of Non-Crystalline Solids, Vol. 258, No. 1, 01.11.1999, p. 57-69.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Caging interactions between a dopant chromophore and the sol-gel matrix
AU - Puccetti, Germain
AU - Leblanc, Roger
PY - 1999/11/1
Y1 - 1999/11/1
N2 - The successful incorporation of chromophores in a sol-gel matrix requires a careful study of their interaction with the gel environment. Photoacoustic spectroscopy is used to probe chemical changes in the direct neighborhood of dopant molecules in a silica-based sol gel during times of evolution up to 100 times the gelation time. Studies of different chromophores such as β-carotene (β-Car.) and copper phthalocyanine (Cu-Pht.) show a size dependent steric hindrance effect as well as chromophore relaxation phenomena within the gel pores. Three main phases of evolution of the medium are distinguished. The stability of the chromophores is discussed and the results compared to FTIR spectra over time.
AB - The successful incorporation of chromophores in a sol-gel matrix requires a careful study of their interaction with the gel environment. Photoacoustic spectroscopy is used to probe chemical changes in the direct neighborhood of dopant molecules in a silica-based sol gel during times of evolution up to 100 times the gelation time. Studies of different chromophores such as β-carotene (β-Car.) and copper phthalocyanine (Cu-Pht.) show a size dependent steric hindrance effect as well as chromophore relaxation phenomena within the gel pores. Three main phases of evolution of the medium are distinguished. The stability of the chromophores is discussed and the results compared to FTIR spectra over time.
UR - http://www.scopus.com/inward/record.url?scp=0033328924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033328924&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(99)00539-6
DO - 10.1016/S0022-3093(99)00539-6
M3 - Article
AN - SCOPUS:0033328924
VL - 258
SP - 57
EP - 69
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 1
ER -