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Fabrication of Gradient and Patterned Organic Thin Films by Bipolar Electrolytic Micelle Disruption Using Redox‐Active Surfactants
Author(s) -
Zhou Yaqian,
Shida Naoki,
Tomita Ikuyoshi,
Inagi Shinsuke
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202103233
Subject(s) - electrolyte , micelle , materials science , electrochemistry , fabrication , thin film , redox , electrode , monomer , chemical engineering , nanotechnology , chemistry , polymer , organic chemistry , composite material , aqueous solution , metallurgy , engineering , medicine , alternative medicine , pathology
Bipolar electrochemistry could be regarded as a powerful approach for selective surface modification due to the beneficial feature that a wirelessly controllable potential distribution on bipolar electrodes (BPEs). Herein we report a bipolar electrolytic micelle disruption (BEMD) system for the preparation of shaped organic films. A U‐shaped bipolar electrolytic system with a sigmoidal potential gradient on the BPE gave gradient‐thin films including various interesting organic compounds, such as a polymerizable monomer, an organic pigment and aggregation induced emission (AIE) molecules. The gradient feature was characterized by UV–Vis absorption, thickness measurements and surface morphology analysis. Corresponding patterned films were also fabricated using a cylindrical bipolar electrolytic setup that enables site‐selective application of the potential on the BPE. Such a facile BEMD approach will open a long‐term perspective with respect to organic film preparation.