PMID- 21567557 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20121002 LR - 20110513 IS - 1521-3927 (Electronic) IS - 1022-1336 (Linking) VI - 31 IP - 17 DP - 2010 Sep 1 TI - Synthesis, Characterization and Preliminary Biological Evaluation of P(HPMA)-b-P(LLA) Copolymers: A New Type of Functional Biocompatible Block Copolymer. PG - 1492-500 LID - 10.1002/marc.201000090 [doi] AB - We describe a synthetic pathway to functional P(HPMA)-b-P(LLA) block copolymers. The synthesis relies on a combination of ring-opening polymerization of L-lactide, conversion into a chain transfer agent (CTA) for the RAFT polymerization of pentafluorophenyl methacrylate. A series of block copolymers was prepared that exhibited molecular weights $\overline M _\rm n$ ranging from 7 600 to 34 300 g . mol(-1) , with moderate PDI between 1.3 and 1.45. These reactive precursor polymers have been transformed into biocompatible P(HPMA)-b-P(LLA) copolymers and their fluorescently labeled derivatives by facile replacement of the pentafluorophenyl groups. The fluorescence label attached to this new type of a partially degradable amphiphilic block copolymer was used to study cellular uptake in human cervix adenocarcinoma (HeLa) cells as well as aggregation behavior by fluorescence correlation spectroscopy (FCS). CI - Copyright (c) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Barz, Matthias AU - Barz M AD - Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany. FAU - Wolf, Florian K AU - Wolf FK FAU - Canal, Fabiana AU - Canal F FAU - Koynov, Kaloian AU - Koynov K FAU - Vicent, Maria J AU - Vicent MJ FAU - Frey, Holger AU - Frey H FAU - Zentel, Rudolf AU - Zentel R LA - eng PT - Journal Article DEP - 20100609 PL - Germany TA - Macromol Rapid Commun JT - Macromolecular rapid communications JID - 9888239 EDAT- 2011/05/14 06:00 MHDA- 2011/05/14 06:01 CRDT- 2011/05/14 06:00 PHST- 2010/02/06 00:00 [received] PHST- 2010/03/10 00:00 [revised] PHST- 2011/05/14 06:00 [entrez] PHST- 2011/05/14 06:00 [pubmed] PHST- 2011/05/14 06:01 [medline] AID - 10.1002/marc.201000090 [doi] PST - ppublish SO - Macromol Rapid Commun. 2010 Sep 1;31(17):1492-500. doi: 10.1002/marc.201000090. Epub 2010 Jun 9.