Directly resolved core-corona structure of block copolymer micelles by cryo-transmission electron microscopy

Yi Zheng, You Yeon Won, Frank S. Bates, H. Ted Davis, L. E. Seriven, Y. Talmon

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Core-corona structures of poly(ethyleneoxide)/polybutadiene (PEO/PB) block copolymer micelles are directly resolved for the first time by examining rapidly vitrified samples by transmission electron microscopy at liquid nitrogen temperature (Cryo-TEM). Spherical micelles form at higher PEO/PB block volume ratio; cylindrical form at lower block volume ratio. Images of both shapes of micelles show a dense core and a diffuse corona. The core and corona sizes agree well with theoretical prediction from the "star" model of polymer micelles.

Original languageEnglish (US)
Pages (from-to)10333-10334
Number of pages2
JournalJournal of Physical Chemistry B
Volume103
Issue number47
StatePublished - Nov 25 1999

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