Real‐Time Probing of Nanowire Assembly Kinetics at the Air–Water Interface by In Situ Synchrotron X‐Ray Scattering

Although many assembly strategies have been used to successfully construct well‐aligned nanowire (NW) assemblies, the understanding of their assembly kinetics has remained elusive, which restricts the development of NW‐based device and circuit fabrication. Now a versatile strategy that combines inte...

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Published inAngewandte Chemie International Edition Vol. 57; no. 27; pp. 8130 - 8134
Main Authors He, Zhen, Jiang, Hui‐Jun, Wu, Long‐Long, Liu, Jian‐Wei, Wang, Geng, Wang, Xiao, Wang, Jin‐Long, Hou, Zhong‐Huai, Chen, Gang, Yu, Shu‐Hong
Format Journal Article
LanguageEnglish
Published Germany Wiley Subscription Services, Inc 02.07.2018
EditionInternational ed. in English
Subjects
Assembly
Conformation
Entropy
Fabrication
GISAXS
in situ characterization
Kinetics
Molecular chains
Molecular dynamics
molecular dynamics simulation
Mud-water interfaces
Nanotechnology
Nanowires
Scattering
thermodynamics simulation
Well construction
GISAXS
thermodynamics simulation
in situ characterization
nanowires
molecular dynamics simulation
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Summary:Although many assembly strategies have been used to successfully construct well‐aligned nanowire (NW) assemblies, the understanding of their assembly kinetics has remained elusive, which restricts the development of NW‐based device and circuit fabrication. Now a versatile strategy that combines interfacial assembly and synchrotron‐based grazing‐incidence small‐angle X‐ray scattering (GISAXS) is presented to track the assembly evolution of the NWs in real time. During the interface assembly process, the randomly dispersed NWs gradually aggregate to form small ordered NW‐blocks and finally are constructed into well‐defined NW monolayer driven by the conformation entropy. The NW assembly mechanism can be well revealed by the thermodynamic analysis and large‐scale molecular dynamics theoretical evaluation. These findings point to new opportunities for understanding NW assembly kinetics and manipulating NW assembled structures by bottom‐up strategy. Nanowire assembly kinetics are successfully investigated in real time by a combination of an interfacial assembly platform and an in situ synchrotron‐based GISAXS technique. The kinetics can be verified by both thermodynamic and kinetic theoretical evaluation.
Bibliography:These authors contributed equally to this work.
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201803552