Biodegradable photoluminescent polymers
US8530611B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2009 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Sep 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2533/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In one aspect, the present invention describes biodegradable photoluminescent polymer (BPLP) compositions. In some embodiments, an aliphatic biodegradable photoluminescent polymer (BPLP) composition comprises a degradable oligomer, wherein the oligomer is synthesized from a diol, an amino acid, and a biocompatible multifunctional carboxylic acid comprising a hydroxyl group. The amino acid is linked as a side group to the degradable oligomer backbone, and fluorescence emanates from a 6-membered ring formed by a carboxylic acid group of the amino acid, an alpha carbon of the amino acid, an amide linkage formed by an amino group of the amino acid, and a central carbon of the multifunctional carboxylic acid via an esterification reaction of the carboxylic acid group of the amino acid and the hydroxyl group of the multifunctional carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.