Magnetic control of self-assembly and disassembly in organic materials

被引:6
|
作者
Jung, You-jin [1 ]
Kim, Hyoseok [1 ]
Cheong, Hae-Kap [2 ]
Lim, Yong-beom [1 ]
机构
[1] Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 03722, South Korea
[2] Korea Basic Sci Inst, Div Magnet Resonance, Ochang 28119, South Korea
基金
新加坡国家研究基金会;
关键词
DIAMAGNETIC ANISOTROPY; EMERGING APPLICATIONS; NUCLEIC-ACID; ORIENTATION; ALIGNMENT; HELIX; SUSCEPTIBILITY; PEPTIDES; DYNAMICS; STORAGE;
D O I
10.1038/s41467-023-38846-2
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Because organic molecules and materials are generally insensitive or weakly sensitive to magnetic fields, a certain means to enhance their magnetic responsiveness needs to be exploited. Here we show a strategy to amplify the magnetic responsiveness of self-assembled peptide nanostructures by synergistically combining the concepts of perfect alpha-helix and rod-coil supramolecular building blocks. Firstly, we develop a monomeric, nonpolar, and perfect alpha-helix (MNP-helix). Then, we employ the MNP-helix as the rod block of rod-coil amphiphiles (rod-coils) because rod-coils are well-suited for fabricating responsive assemblies. We show that the self-assembly processes of the designed rod-coils and disassembly of rod-coil/DNA complexes can be controlled in a magnetically responsive manner using the relatively weak magnetic field provided by the ordinary neodymium magnet [0.07 similar to 0.25 Tesla (T)]. These results demonstrate that magnetically responsive organic assemblies usable under practical conditions can be realized by using rod-coil supramolecular building blocks containing constructively organized diamagnetic moieties. Organic molecules and materials are generally insensitive or weakly sensitive to magnetic fields due to their small diamagnetic force. Here, the authors show a strategy to amplify the magnetic responsiveness of self-assembled peptide nanostructures by synergistically combining the concepts of perfect alpha-helix and rod-coil supramolecular building blocks
引用
收藏
页数:11
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