20.500.12556/RUL-182769 Simple and fast wettability control of aminosilanized surfaces with carboxylic acids This study investigates the rapid and reversible transition between hydrophilic and hydrophobic states on aminosilanized glass substrates using ion pair formation between surface-bound amines and organic/inorganic acids. Glass surfaces were prepared via piranha solution treatment, followed by drying and chemical vapor deposition of 3-aminopropyltrimethoxysilane. Water contact angle measurements revealed a sharp transition in surface wettability upon treatment with mineral acids while treatment with carboxylic acids shows a strong dependence on carbon chain length. This approach utilizes non-fluorinated long-chain carboxylic acids as environmentally friendly alternatives to PFAS, aligning with current global efforts for sustainable engineering. The system’s ability to cycle between hydrophilic and hydrophobic states within min per cycle demonstrates the efficiency of this ion pair-driven approach compared to conventional methods. Work offers insights into optimizing surface modifications for applications such as self-cleaning, anti-icing, microfluidics and dynamic wettability control without the need for prolonged processing times and complicated and expensive equipment. reverse wettability aminosilane ion pair self-cleaning surface organic coatings hydrophobicity wettability APTMS carboxylic acids silanization karboksilne kisline true false true Angleški jezik Slovenski jezik Članek v reviji 2026-05-22 10:25:31 2026-05-22 10:25:33 2026-05-23 04:41:59 0000-00-00 00:00:00 2025 0 0 8 str. Vol. 76, art. 107906 Nov. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 54 2468-0230 10.1016/j.surfin.2025.107906 254891267 1-s2.0-S2468023025021571-main.pdf 1-s2.0-S2468023025021571-main.pdf 1 8854FCC9C18D0C55AF311F407D89F524 5fe4a235b35b8dd71f171ceb0398925a6c26981d3500d803adc61b7ef31e67a5 f9572491-55b7-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234300 https://www.sciencedirect.com/science/article/pii/S2468023025021571 0 7af5b942-55b7-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234298 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0