The Encapsulation of Organic Molecules and Enzymes in Sol-Gel Glasses: Novel Photoactive, Optical, Sensing and Bioactive Materials. A Review
Abstract
The ability to trap organic and bioorganic molecules in in-organic oxides through the sol gel process, first introduced in 1984, opened the road for a whole new class of materials and to intensive activity in many laboratories. The types of materials and their applications are reviewed. These include photocatalysts for redox reactions; photochromic materials and other information recording materials, filters and light-guides; fluorescent, phosphorescent and dye-laser materials; a variety of chemical sensors; and bioactive (enzymatic) glasses. One of the major revolutions in modern materials science has been the advent of a novel synthetic route for the preparation of glasses, know as the sol-gel processes . The basic idea of the sol-gel process is to split the glass preparation into two main stages: The first stage is a room temperature polymerization of a suitable monomer leading to a porous glass, usually an inorganic glass. The second stage is the closure of the pores at elevated temperatures (several hundreds degrees), forming the final glass.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA244154
Entities
People
- David Avnir
- Michael Ottolenghi
- Sergei Braun
Organizations
- Hebrew University of Jerusalem