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Molecular Recognition Induced Self-Assembly of Diblock Copolymers: Microspheres to Vesicles

✍ Scribed by Oktay Uzun; Amitav Sanyal; Youngdo Jeong; Vincent M. Rotello

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
374 KB
Volume
10
Category
Article
ISSN
1616-5187

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✦ Synopsis

Abstract

Random diblock copolymer scaffolds grafted with diamidopyridine (DAP) hydrogen bonding recognition units self‐assembled to furnish microspheres when mixed with monoblock copolymers decorated with complementary recognition elements. Through choice of block length, microspheres of various sizes could be produced. The relative length of the two blocks plays a crucial role in determining the formation of aggregates. PEG‐b‐P(S‐co‐S~DAP~) diblock copolymer was used to fabricate recognition induced pegylated microspheres, by non‐covalent crosslinking with monoblock copolymer functionalized with complementary thymine (Thy) units. These self‐assembled microspheres can be efficiently crosslinked via photochemical [2__π__~s~ + 2__π__~s~] cycloaddition with the resultant morphology change into vesicular structures.

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