Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions
Precise control over helical chirality and dimensions of molecular self-assemblies, a remaining challenge for both chemists and materials scientists, is the key to manipulate the property and performance of supramolecular materials. Herein, we report that a cholesterol-azopyridine conjugate could se...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/137709 |
| _version_ | 1826125235042123776 |
|---|---|
| author | Liu, Guofeng Sheng, Jianhui Teo, Wei Liang Yang, Guangbao Wu, Hongwei Li, Yongxin Zhao, Yanli |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Liu, Guofeng Sheng, Jianhui Teo, Wei Liang Yang, Guangbao Wu, Hongwei Li, Yongxin Zhao, Yanli |
| author_sort | Liu, Guofeng |
| collection | NTU |
| description | Precise control over helical chirality and dimensions of molecular self-assemblies, a remaining challenge for both chemists and materials scientists, is the key to manipulate the property and performance of supramolecular materials. Herein, we report that a cholesterol-azopyridine conjugate could self-assemble into organogels with photocontrollable dimensional transition from 2D microbelts to 1D nanotubes and finally to 0D nanoparticles. The E/ Z-Photoisomerization of the 4-azopyridine unit is the major driving force for the dimensional transformation. Furthermore, the self-assembled structures were observed to exhibit metal ion-mediated helicity inversion through the metal coordination. These observations were collectively confirmed by several techniques including scanning electron microscopy, atomic force microscopy, circular dichroism, and X-ray crystallography. The rational design of building blocks for the construction of dimension and chirality controllable self-assembly systems may lead to versatile applications in smart display, advanced optoelectronic device, and supramolecular asymmetric catalysis. |
| first_indexed | 2024-10-01T06:33:23Z |
| format | Journal Article |
| id | ntu-10356/137709 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:33:23Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1377092020-06-01T10:01:43Z Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions Liu, Guofeng Sheng, Jianhui Teo, Wei Liang Yang, Guangbao Wu, Hongwei Li, Yongxin Zhao, Yanli School of Materials Science & Engineering School of Physical and Mathematical Sciences Science::Chemistry Chirality Self Organization Precise control over helical chirality and dimensions of molecular self-assemblies, a remaining challenge for both chemists and materials scientists, is the key to manipulate the property and performance of supramolecular materials. Herein, we report that a cholesterol-azopyridine conjugate could self-assemble into organogels with photocontrollable dimensional transition from 2D microbelts to 1D nanotubes and finally to 0D nanoparticles. The E/ Z-Photoisomerization of the 4-azopyridine unit is the major driving force for the dimensional transformation. Furthermore, the self-assembled structures were observed to exhibit metal ion-mediated helicity inversion through the metal coordination. These observations were collectively confirmed by several techniques including scanning electron microscopy, atomic force microscopy, circular dichroism, and X-ray crystallography. The rational design of building blocks for the construction of dimension and chirality controllable self-assembly systems may lead to versatile applications in smart display, advanced optoelectronic device, and supramolecular asymmetric catalysis. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) 2020-04-09T04:49:18Z 2020-04-09T04:49:18Z 2018 Journal Article Liu, G., Sheng, J., Teo, W. L., Yang, G., Wu, H., Li, Y., & Zhao, Y. (2018). Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions. Journal of the American Chemical Society, 140(47), 16275-16283. doi:10.1021/jacs.8b10024 0002-7863 https://hdl.handle.net/10356/137709 10.1021/jacs.8b10024 30403348 2-s2.0-85056710306 47 140 16275 16283 en Journal of the American Chemical Society © 2018 American Chemical Society. All rights reserved. |
| spellingShingle | Science::Chemistry Chirality Self Organization Liu, Guofeng Sheng, Jianhui Teo, Wei Liang Yang, Guangbao Wu, Hongwei Li, Yongxin Zhao, Yanli Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions |
| title | Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions |
| title_full | Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions |
| title_fullStr | Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions |
| title_full_unstemmed | Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions |
| title_short | Control on dimensions and supramolecular chirality of self-assemblies through light and metal ions |
| title_sort | control on dimensions and supramolecular chirality of self assemblies through light and metal ions |
| topic | Science::Chemistry Chirality Self Organization |
| url | https://hdl.handle.net/10356/137709 |
| work_keys_str_mv | AT liuguofeng controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions AT shengjianhui controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions AT teoweiliang controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions AT yangguangbao controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions AT wuhongwei controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions AT liyongxin controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions AT zhaoyanli controlondimensionsandsupramolecularchiralityofselfassembliesthroughlightandmetalions |