DODCI molecules incorporated in sol-gel glasses: the interaction with the silica matrix

被引：18

作者：

Casalboni, M

De Matteis, F

Ferone, V

Prosposito, P

Senesi, R

Pizzoferrato, R

Bianco, A

De Mico, A

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, Ist Nazl Fis Mat, I-00133 Rome, Italy

[3] Univ Roma Tor Vergata, Dipartimento Ingn Meccan, I-00133 Rome, Italy

[4] Univ Roma Tor Vergata, Dipartimento Chim, I-00133 Rome, Italy

[5] Univ Rome La Sapienza, Ist Nazl Coordinamento Chim Sistemi Biol, Dipartimento Chim, CNR,Ctr Chim Sostanze Organ Nat, I-00185 Rome, Italy

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 291卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(98)00548-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The optical properties of the dye DODCI (3,3'-diethyloxadicarbocyanine iodide) incorporated in sol-gel silica-glass matrices have been investigated with regard to interaction with the surrounding silica cage. The absorption and emission spectra have been measured in silica-glass samples with different pore sizes and compared with the spectra obtained in liquid solutions that simulate different environments for the dye molecule. Measurements of a DODCI-derivative molecular structure have been performed by NMR spectroscopy in dimethyl sulfoxide. The results suggest that new electronic states are produced in the trapped molecule, for glass-pore sizes in the range of 2.5-3.5 nm, as a result of the attack of Si-O- groups on the conjugate chain and the protonation to the dicationic form. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：167 / 172

页数：6

共 19 条

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