Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 50, Issue 15, Pages 3149-3157Publisher
WILEY
DOI: 10.1002/pola.26101
Keywords
amphiphiles; micelles; polyphosphazene; steric effect; thiol-yne
Categories
Funding
- National Natural Science Foundation of China [50703034]
- Zhejiang Provincial Natural Science Foundation of China [Y4100146]
- Zhejiang Provincial Innovative Research Team [2009R50004]
- Opening Foundation of Zhejiang Provincial Top Key Discipline [20110915]
Ask authors/readers for more resources
We describe a versatile approach to synthesize glycosylated polyphosphazenes with controllable density of glycosyl groups. These glycopolymers have been synthesized by the nucleophilic substitution of poly(dichlorophosphazene) with propargylamine and subsequent thiolyne click reaction between poly[di(propargylamine)phosphazene] and 2,3,4,6-tetra-O-acetyl-1-thio-beta-D-glucopyranose (SH-GlcAc4). The polymers were characterized with FTIR and 1H NMR. We found that the high steric hindrance of SH-GlcAc4 plays a key role in the overall reaction process, and similar to 55% of the alkyne groups participate in the thiolyne click reaction. About 8% of the alkyne groups convert to alkene groups at the end of click reaction. The substitution of alkyne/alkane mixture was conducted to reduce the alkyne density in the side groups of polyphosphazenes and minimize the influences of this steric effect. Mixed-substituent polyphosphazene was synthesized with 2:3 ratio of alkyne and alkane. In this case, almost no alkyne group remains after the thiolyne click reaction, and thus the glycosylated polyphosphazene is able to form into micelles through self-assembly process. (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available