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Nanocrystals Assembled by the Chemical Reaction of the Dispersion Solvent
Author(s) -
Nakanishi Hideyuki,
Kawabata Yuto,
Tsujiai Shogo,
Tanaka Hayato,
Teraji Satoshi,
Holló Gábor,
Lagzi István,
Norisuye Tomohisa,
TranCongMiyata Qui
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202005827
Subject(s) - nanocrystal , materials science , nanotechnology , solvent , photomask , photopolymer , polymerization , dispersion (optics) , conductivity , chemical engineering , polymer , chemistry , resist , organic chemistry , composite material , physics , layer (electronics) , engineering , optics
The development of methods to pattern nanocrystals with different sizes and shapes remains a challenge. In this study, we demonstrate a unique class of bottom‐up approaches to assemble nanocrystals into patterns. Our approach for patterning nanocrystals focuses on the utilization and control of the chemical reaction of solvents surrounding nanocrystals. The photopolymerization of solvent molecules through a photomask creates time‐dependent concentration gradients of the solvents. Dispersed nanocrystals such as silver nanowires (AgNWs) migrate and are gradually organized and integrated into the polymerizing films based on the concentration gradients. The AgNW‐embedded film properties are determined by the organized AgNW structures and include light transmission and electrical conductivity. Overall, the demonstrated method is very simple, widely applicable to various nanocrystals and solvents, and can thus contribute to the development of a new class of nanocrystal patterning methods.