Sol-gel/rhodamine 6G composite films with tailored microstructures
- Sandia National Labs., Albuquerque, NM (United States) New Mexico Univ., Albuquerque, NM (United States). Center for Micro-Engineered Ceramics
A multi-step hydrolysis procedure was developed to prepare composite organic dye/sol-gel thin films with variable porosity for such as switches or sensors. Variation of acid and base catalyzed hydrolysis sequences of three sols prepared from tetraethoxysilane with identical H[sub 2]O/Si ratios, dilution factors, and pH resulted in considerably different silicate speciation. Under conditions where monomer was avoided, the refractive indices of as-deposited films could be varied by an again step prior to film deposition. This general strategy, which relies on the aggregation of fractal polymeric clusters, is compatible with the low temperature and near neutral pH requirements of both organic dyes and biologically active species such as enzymes.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 7077989
- Report Number(s):
- SAND-92-0037C; CONF-9207172--1; ON: DE93005364
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sol-gel-derived silica films with tailored microstructures for applications requiring organic dyes
Sol-gel films with tailored microstructures
Related Subjects
360601* -- Other Materials-- Preparation & Manufacture
AMINES
CARBOXYLIC ACIDS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COLLOIDS
COMPOSITE MATERIALS
DECOMPOSITION
DISPERSIONS
DYES
EMISSION SPECTRA
EVEN-ODD NUCLEI
FILMS
FLUORESCENCE
FRACTALS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROLYSIS
ISOTOPES
LIGHT NUCLEI
LUMINESCENCE
LYSIS
MAGNETIC RESONANCE
MATERIALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
OPTICAL PROPERTIES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REAGENTS
REFRACTIVE INDEX
RESONANCE
RHODAMINES
SILANES
SILICATES
SILICON 29
SILICON COMPOUNDS
SILICON ISOTOPES
SOL-GEL PROCESS
SOLS
SOLVOLYSIS
SPECTRA
STABLE ISOTOPES
SYNTHESIS