Dimer-to-monomer transformation of rhodamine 6G in sol-gel silica films

被引：70

作者：

Innocenzi, P ^{[1
]}

Kozuka, H ^{[1
]}

Yoko, T ^{[1
]}

机构：

[1] KYOTO UNIV,INST CHEM RES,UJI,KYOTO FU 611,JAPAN

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1996年 / 201卷 / 1-2期

关键词：

OPTICAL-PROPERTIES; ORGANIC-MOLECULES; FLUORESCENT DYES; PROTON-TRANSFER; LASER-DYE; GLASSES; SPECTROSCOPY; BEHAVIOR; EMISSION; PYRENE;

D O I：

10.1016/0022-3093(95)00620-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The process of dimerization and disaggregation of rhodamine 6G in tetraethoxysilane-derived silica gel films was studied using UV-visible and fluorescence spectroscopy. Pyranine (8-hydroxy trisulfonated pyrene) was also used as a fluorescence probe to study the chemical evolution in the films during drying. Rh6G dimers were found in the as-deposited films although only monomers were observed in the sols. Larger amounts of dimers were found in the films prepared from the solutions of higher dye concentration and water content. During drying up to 150 degrees C, the dimers changed gradually into monomers. The dimer-to-monomer transformation was explained by the evaporation of the solvent from the films.

引用

页码：26 / 36

页数：11

共 34 条

[1] CHARACTERIZATION OF SILICA-GELS BY INFRARED REFLECTION SPECTROSCOPY
ALMEIDA, RM
GUITON, TA
PANTANO, CG
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1990, 121 (1-3) : 193 - 197
[2] INTERFACES AND CONFINED ENVIRONMENTS .23. ORGANIC FLUORESCENT DYES TRAPPED IN SILICA AND SILICA TITANIA THIN-FILMS BY THE SOL-GEL METHOD - PHOTOPHYSICAL, FILM AND CAGE PROPERTIES
AVNIR, D
KAUFMAN, VR
REISFELD, R
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1985, 74 (2-3) : 395 - 406
[3] AVNIR D, 1984, J PHYS CHEM-US, V88, P5954
[4] DYNAMICS OF EXCITED-STATE REACTIONS IN REVERSED MICELLES .1. PROTON-TRANSFER INVOLVING A HYDROPHILIC FLUORESCENT-PROBE
BARDEZ, E
GOGUILLON, BT
KEH, E
VALEUR, B
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (09) : 1909 - 1913
[5] OPTICAL-PROPERTIES OF SOL-GEL GLASSES DOPED WITH ORGANIC-MOLECULES
DUNN, B
ZINK, JI
[J]. JOURNAL OF MATERIALS CHEMISTRY, 1991, 1 (06) : 903 - 913
[6] BAND LIMITS AND THE VIBRATIONAL-SPECTRA OF TETRAHEDRAL GLASSES
GALEENER, FL
[J]. PHYSICAL REVIEW B, 1979, 19 (08): : 4292 - 4297
[7] Optical Characterisation of Sol-Gel Optical Composites
Gall, Gavin J.
Li, Xiaochun
King, Terence A.
[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1994, 2 (1-3) : 775 - 778
[8] Spectroscopic Studies of Post-Doped Silica Gel Monoliths
Harrison, Carole C.
Mcgiveron, James K.
Li, Xiaochun
[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1994, 2 (1-3) : 855 - 859
[9] SOL-GEL GLASSES - A NEW MATERIAL FOR SOLAR FLUORESCENT PLANAR CONCENTRATORS
HINSCH, A
ZASTROW, A
WITTWER, V
[J]. SOLAR ENERGY MATERIALS, 1990, 21 (2-3): : 151 - 164
[10] STRUCTURAL-CHANGES ALONG THE SOL-GEL-XEROGEL TRANSITION IN SILICA AS PROBED BY PYRENE EXCITED-STATE EMISSION
KAUFMAN, VR
AVNIR, D
[J]. LANGMUIR, 1986, 2 (06) : 717 - 722

← 1 2 3 4 →