Crystallization of selenium in polymer matrices via in situ generation of organic crystalline nucleation sites
US4115115A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Sep 23, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a method of forming a layer of particulate trigonal selenium dispersed in a polymeric matrix. The method involves: PA1 (a) forming a solution containing: PA2 I. dibenzoyl peroxide, PA2 Ii. an organo selenium compound which interacts with dibenzoyl peroxide to form zero valent selenium, and PA2 Iii. a matrix polymer which is substantially non-reactive with dibenzoyl peroxide and the organo selenium compound, PA1 in a volatile solvent; PA1 (b) applying the solution to a substrate in the form of a thin film; PA1 (c) allowing the dibenzoyl peroxide and organo selenium compound to react thereby forming amorphous zero valent selenium particles dispersed in the matrix polymer; and PA1 (d) heating the matrix polymer/zero valent selenium combination to a temperature and for a time sufficient to convert the amorphous zero valent selenium to its crystalline, trigonal form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.