The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Two-Stage Collapse of Unimolecular Micelles with Double Thermoresponsive Coronas
Abstract
Phase transition behavior of unimolecular dendritic three-layer nanostructures with dual thermoresponsive coronas is studied. Successive reversible addition-fragmentation transfer (RAFT) polymerizations of N-isopropylacrylamide (NIPAM) and 2-(dimethylamino)ethyl methacrylate (DMA) were conducted using fractionated fourth-generation hyperbranched polyester (Bolton H40) based macroRAFT agent. At lower temperatures (<20 degrees C), dendritic macromolecules H40-poly(N-isopropylacrylamide)-poly(2-(dimethylamino)ethyl methacrylate) (H40-PNIPAM-PDMA) exist as unimolcular core-shell-corona nanostructures with hydrophobic H40 as the core, swollen PNIPAM as the inner shell, and swollen PDMA as the corona. PNIPAM and PDMA homopolymers undergo phase transitions at their lower critical solution temperatures (LCST), which are found to be 32 degrees C for PNIPAM and 40-50 degrees C for PDMA, respectively. Upon continuously heating through the LCSTs of PNIPAM and PDMA, such dendritic unimolecular micelles exhibit two-stage thermally induced collapse. This process is reversible with a two-stage reswelling upon cooling. Laser light scattering, micro-differential scanning calorimetry, and excimer fluorescence measurements are used to investigate the double phase transitions.
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Cites
Polymer brushes: surface-immobilized macromolecules
Zhao, B., & Brittain, W. J. (2000) · Progress in Polymer Science · doi:10.1016/s0079-6700(00)00012-5 · Cited by 1,628
Zhang, L., & Eisenberg, A. (1996) · Journal of the American Chemical Society · doi:10.1021/ja953709s · Cited by 1,262
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Physical stimuli-responsive polymeric micelles for anti-cancer drug delivery
Rapoport, N. (2007) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2007.05.009 · Cited by 1,002
Thermo-sensitive polymeric micelles based on poly (N-isopropylacrylamide) as drug carriers
Wei, H., Cheng, S.-X., Zhang, X.-Z., & Zhuo, R.-X. (2009) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2009.05.002 · Cited by 718
Multi-stimuli responsive macromolecules and their assemblies
Zhuang, J., Gordon, M. R., Ventura, J., Li, L., & Thayumanavan, S. (2013) · Chemical Society Reviews · doi:10.1039/c3cs60094g · Cited by 621
Self‐Assembly of Hyperbranched Polymers and Its Biomedical Applications
Zhou, Y., Huang, W., Liu, J., Zhu, X., & Yan, D. (2010) · Advanced Materials · doi:10.1002/adma.201000369 · Cited by 560
Recent advances in polymer protected gold nanoparticles: synthesis, properties and applications
Shan, J., & Tenhu, H. (2007) · Chemical Communications · doi:10.1039/b707740h · Cited by 411
Metadata
- Authors
- Xu, J., Luo, S., Shi, W., & Liu, S.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-12-31
- Volume
- 22
- Issue
- 3
- Pages
- 989-997
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2080195231
- Cited by
- 183
- References
- 2
- FWCI
- 9.60
- Type
- journal article
- Language
- en
- Open access
- closed
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