Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 26, Pages 8809-8813Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201903483
Keywords
atomic force microscopy; hydrogels; microgels; polymerization; structure elucidation
Categories
Funding
- Japanese Ministry of Education, Culture, Sports, Science, and Technology (MEXT) [26102517, 16H00760, 26102515, 18H04512]
- Ogasawara Foundation for the Promotion of Science Engineering [17J05706]
- Japan Society for the Promotion of Science (JSPS)
- Grants-in-Aid for Scientific Research [18H04512, 26102517, 16H00760] Funding Source: KAKEN
Ask authors/readers for more resources
Despite the tremendous efforts devoted to the structural analysis of hydrogel microspheres (microgels), many details of their structures remain unclear. Reported in this study is that thermoresponsive poly(N-isopropyl acrylamide) (pNIPAm)-based microgels exhibit not only the widely accepted core-shell structures, but also inhomogeneous decanano-sized non-thermoresponsive spherical domains within their dense cores, which was revealed by temperature-controlled high-speed atomic force microscopy (TC-HS-AFM). Based on a series of experiments, it is concluded that the non-thermoresponsive domains are characteristic for pNIPAm microgels synthesized by precipitation polymerization, and plausible structures for microgels prepared by other polymerization techniques are proposed.
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