title: Novel fluorescent copolyanhydrides as potential visible matrices for drug delivery.
abstract: Two classes of fluorescent copolyanhydrides were synthesized by melt copolycondensation of the fluorophoric diacid, p-(carboxyethylformamido)benzoic acid (CEFB), with sebacic acid (SA) or N-trimellitylimidoglycine (TMA-gly). Alternate copolyanhydride based on SA and CEFB was also prepared by solution polycondensation of CEFB and sebacoyl chloride. 'H NMR spectra of the copolymers confirm their structures. Fluorescence was observed for all the copolymers, the intensity of which increases with the CEFB fraction. Either blue (ca. 429 nm) or green (ca. 520 nm) light can be emitted from the copolymers with the excitation of UV (356 nm) and visible (470 nm) light, respectively. The polymers were further fabricated to microsphere formulation, which can be clearly visualized by fluorescent microscopy.
authors.affiliation: Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China. op1-jh1@emb.zju.edu.cn
authors.forename: H L
authors.initials: HL
authors.lastname: Jiang
authors.forename: K J
authors.initials: KJ
authors.lastname: Zhu
mesh_terms: D000812:Anhydrides / Q000138:chemical synthesis / Q000737:chemistry*; D001672:Biocompatible Materials / Q000138:chemical synthesis / Q000737:chemistry*; D016503:Drug Delivery Systems; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008422:Materials Testing; D008863:Microspheres; D013050:Spectrometry, Fluorescence
chemical_list: D000812:Anhydrides; D001672:Biocompatible Materials; D005456:Fluorescent Dyes