https://scholars.lib.ntu.edu.tw/handle/123456789/623911
標題: | Cylindrical micelles of a POSS amphiphilic dendrimer as nano-reactors for polymerization | 作者: | Weng J.-T. Yeh T.-F. Samuel A.Z. Huang Y.-F. Sie J.-H. Wu K.-Y. CHI-HOW PENG Hamaguchi H.-O. CHIEN LUNG WANG |
公開日期: | 2018 | 卷: | 10 | 期: | 7 | 起(迄)頁: | 3509-3517 | 來源出版物: | Nanoscale | 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-ADNPs) 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. ? 2018 The Royal Society of Chemistry. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042184310&doi=10.1039%2fc7nr07565k&partnerID=40&md5=665905f0bec3b900b37dea7a65d3525e https://scholars.lib.ntu.edu.tw/handle/123456789/623911 |
DOI: | 10.1039/c7nr07565k | SDG/關鍵字: | Cylinders (containers);Cylinders (shapes);Hydrophilicity;Micelles;Molecules;Polymerization;X ray scattering;Amphiphilic dendrimers;Cylindrical micelles;Further development;Guest molecules;Hydrophobic solvent;Mono-dispersed;Nanocylinders;NMR spectrometry;Dendrimers |
顯示於: | 化學系 |
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