Morphology and Pattern Control of Diphenylalanine Self-Assembly via Evaporative Dewetting

被引:42
作者
Chen, Jiarui [1 ,2 ]
Qin, Shuyu [1 ,2 ]
Wu, Xinglong [1 ,2 ]
Chut, Paul K. [3 ]
机构
[1] Nanjing Univ, Key Lab Modern Acoust, MOE, Inst Acoust, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[3] City Univ Hong Kong, Dept Phys & Mat Sci, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China
关键词
diphenylalanine self-assembly; evaporative dewetting; morphology and pattern control; PEPTIDE NANOSTRUCTURES; THIN-FILM; NANOTUBES; MECHANISM; INSIGHTS; DRIVEN; RINGS; WATER; FLOW;
D O I
10.1021/acsnano.5b05936
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Self-assembled peptide nanostructures have unique physical and biological properties and promising applications in electrical devices and functional molecular recognition. Although solution-based peptide molecules can self-assemble into different morphologies, it is challenging to control the self-assembly process. Herein, controllable self-assembly of diphenylalanine (FF) in an evaporative dewetting solution is reported. The fluid mechanical dimensionless numbers, namely Rayleigh, Marangoni, and capillary numbers, are introduced to control the interaction between the solution and FF molecules in the self-assembly process. The difference in the film thickness reflects the effects of Rayleigh and Marangoni convection, and the water vapor flow rate reveals the role of viscous fingering in the emergence of aligned FF flakes. By employing dewetting, various FF self-assembled patterns, like concentric and spokelike, and morphologies, like strips and hexagonal tubes/rods, can be produced, and there are no significant lattice structural changes in the FF nanostructures.
引用
收藏
页码:832 / 838
页数:7
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