Degradation‐Restructuring Induced Anisotropic Epitaxial Growth for Fabrication of Asymmetric Diblock and Triblock Mesoporous Nanocomposites |
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| Authors: | Xiaomin Li Tiancong Zhao Yang Lu Peiyuan Wang Ahmed Mohamed El‐Toni Fan Zhang Dongyuan Zhao |
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| Affiliation: | 1. Department of Chemistry and Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers and iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, P. R. China;2. Queensland Micro‐ and Nanotechnology Centre, Griffith University, Brisbane, Australia;3. King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, Saudi Arabia;4. Central Metallurgical Research and Development Institute, CMRDI, Helwan, Cairo, Egypt |
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| Abstract: | A novel degradation‐restructuring induced anisotropic epitaxial growth strategy is demonstrated for the synthesis of uniform 1D diblock and triblock silica mesoporous asymmetric nanorods with controllable rod length (50 nm to 2 µm) and very high surface area of 1200 m2 g?1. The asymmetric diblock mesoporous silica nanocomposites are composed of a 1D mesoporous organosilicate nanorod with highly ordered hexagonal mesostructure, and a closely connected dense SiO2 nanosphere located only on one side of the nanorods. Furthermore, the triblock mesoporous silica nanocomposites constituted by a cubic mesostructured nanocube, a nanosphere with radial mesopores, and a hexagonal mesostructured nanorod can also be fabricated with the anisotropic growth of mesopores. Owing to the ultrahigh surface area, unique 1D mesochannels, and functionality asymmetry, the obtained match‐like asymmetric Au‐NR@SiO2&EPMO (EPMO = ethane bridged periodic mesoporous organosilica) mesoporous nanorods can be used as an ideal nanocarrier for the near‐infrared photothermal triggered controllable releasing of drug molecules. |
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| Keywords: | asymmetric nanostructures mesoporous materials nanorods janus |
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