標題: Cylindrical micelles of a POSS amphiphilic dendrimer as nano-reactors for polymerization
作者: Weng, Jing-Ting
Yeh, Tso-Fan
Samuel, Ashok Zachariah
Huang, Yi-Fan
Sie, Jyun-Hao
Wu, Kuan-Yi
Peng, Chi-How
Hamaguchi, Hiro-o
Wang, Chien-Lung
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 21-Feb-2018
摘要: A low generation amphiphilic dendrimer, POSS-AD, which has a POSS core and eight amphiphilic arms, was synthesized and used as a nano-reactor to produce well-defined polymer nano-cylinders. Confirmed by small-angle X-ray scattering (SAXS), Raman and NMR spectrometry, monodispersed cylindrical micelles that contain a hydrophilic cavity with a diameter of 2.09 nm and a length of 4.26 nm were produced via co-assembling POSS-AD with hydrophilic liquids, such as H2O and HEMA in hydrophobic solvents. Taking the HEMA/POSS-AD cylindrical micelles as nano-reactors, polymerization of HEMA within the micelles results in polymer nano-cylinders (POSS-AD NPs) with a diameter of 2.24 nm and a length of 5.02 nm. The study confirmed that despite the inability to maintain specific shape in solution, low generation dendrimers form well-defined nano-containers or nano-reactors, which relies on co-assembling with hydrophilic guest molecules. These nano-reactors are robust enough to maintain their shape during the polymerization of the guest molecules. Polymer nano-cylinders with dimensions less than 10 nm can thus be produced from the HEMA/POSS-AD micelles. Since the chemical structure of low-generation dendrimers and the contents of the co-assembled nano-reactors can be easily adjusted, the concept holds the potential for the further developments of low-generation amphiphilic dendrimers.
URI: http://dx.doi.org/10.1039/c7nr07565k
http://hdl.handle.net/11536/144543
ISSN: 2040-3364
DOI: 10.1039/c7nr07565k
期刊: NANOSCALE
Volume: 10
起始頁: 3509
結束頁: 3517
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