Noncovalent Spiropyran Coatings for Photoinduced Wettability Switching. (26th November 2017)

• Record Type: Journal Article
• Authors: Bremer, Matthias; Reinke, Ruprecht; Hesseler, Britta; Taale, Mohammadreza; Ingwersen, Daniela; Schwarzer, Stefan; Selhuber-Unkel, Christine; Gerken, Martina
• Other Names: Bayer Ilker S. Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2017(2017)
• Publication Date: 2017-11-26
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2017/6498601
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : The noncovalent binding of spiropyran to candle-soot-covered surfaces is investigated for wettability switching using a coating procedure realized with a drop casting process of using 0.001 mol/L spiropyran in a 5 : 1 toluene-acetone mixture. Scanning electron microscopy images reveal a resulting surface with spiropyran flakes in the candle soot. A reversible switching with UV light and blue or green light is achieved, starting from an initial contact angle of 130° ± 9.68°. The highest contact angle difference is 41° and reversibility has been shown for several switching cycles. Hence, our methods provide an easy-to-use strategy to generate surfaces with switchable wettability.