Preparation of Mesoporous 1,4‐Phenylene‐silica Nanorings through a Dual‐templating Approach |
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| Authors: | Weike Zhu Baozong Li Lifeng Bi Sibing Wang Wei Zhuang Yi Li Yonggang Yang |
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| Institution: | Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China |
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| Abstract: | Mesoporous 1,4‐phenylene‐silica nanorings were prepared using cetyltrimethylammonium bromide (CTAB) and (S)‐2‐methyl‐1‐butanol as a chiral dopant in concentrated aqueous NH3 solutions. Transmission electron microscopy images of the samples indicated that the nanorings were formed by bending nanorods 360°. With increasing the stirring speed or the (S)‐2‐methyl‐1‐butanol/CTAB molar ratio, the morphologies of mesoporous 1,4‐phenylene‐silicas changed from helical nanofibers to nanorings, and then to nano‐saddles. Circular dichroism spectra of these hybrid silicas indicated that they were chiral. |
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| Keywords: | mesoporous helicity 1 4‐phenylene‐silica surfactants sol‐gel processes |
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