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Monodisperse Clay Microballs for Tuning the Pseudogaps by Adsorption in Amorphous Photonic Structures
Author(s) -
Okada Tomohiko,
Hosoyamada Sho,
Takada Chisato,
Ohta Chiharu
Publication year - 2021
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.202000160
Subject(s) - dispersity , amorphous solid , adsorption , materials science , photonics , nanotechnology , chemical engineering , chemical physics , optoelectronics , physics , crystallography , chemistry , polymer chemistry , engineering
Structural color based on colloidal amorphous arrays has received growing interest in both natural and artificial systems; however few local structures on colloidal particles have been designed to tune the photonic pseudogap. We use an expandable interlayered inorganic nanosheet, a synthetic clay, on monodisperse colloidal silica spheres as constituents in an array. Interlayer expansion of the inorganic nanosheet by a cationic surfactant led to an increase in the size of the colloidal particles, resulting in a spectral redshift of the pseudogap. This phenomenon was related to the change in size of the monodisperse particles, which was induced by changing the defined layered local structure.