Accession Number:

ADA244154

Title:

The Encapsulation of Organic Molecules and Enzymes in Sol-Gel Glasses: Novel Photoactive, Optical, Sensing and Bioactive Materials. A Review

Descriptive Note:

Corporate Author:

HEBREW UNIV JERUSALEM (ISRAEL)

Report Date:

1992-01-01

Pagination or Media Count:

23.0

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.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE