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Fabrication of Superhydrophobic Surface by Modulating Morphology of the Organogel

Abstract

A kind of low-molecular weight organic gelator (LMOG) bearing hydrazine linkage and end-capped by alkoxy-substituted phenyl, namely 1, 4-bis[(3, 4-bisoctyloxyphenyl)hydrozide]phenylene (BPH-8), was used to facilely fabricate superhydrophobic surfaces by drop-casting method. The high quality superhydrophobic surfaces could be successfully prepared in one step in a mixed solvent of ethanol and tetrahydrofuran. The wettability of the surfaces can be modulated from superhydrophobicity to hydrophobicity through changing the ethanol and tetrahydrofuran ratio of the mixed solvents. SEM and AFM images demonstrated that the morphologies changed from hierarchical micro/nano structures to porous structures during the increasing content of tetrahydrofuran. It might be the main reason for the wettability change. It was confirmed that these molecules self-assemble into lamellar structure and show priority growth in one dimension to form the nano-scaled fibers. This work not only demonstrated the superiority of superhydrophobic surface preparation through molecular self-assembly, but also offered an easy way to extend its application in the field of surface science.

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Article information


Submitted
11 Dec 2020
Accepted
22 Feb 2021
First published
22 Feb 2021

Soft Matter, 2021, Accepted Manuscript
Article type
Paper

Fabrication of Superhydrophobic Surface by Modulating Morphology of the Organogel

J. Zhu, T. R. Zhang, Y. Liu, D. Lu, P. Zhang, M. Li, H. Wang and M. Wen, Soft Matter, 2021, Accepted Manuscript , DOI: 10.1039/D0SM02182B

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