Environment-controlled tethering by aggregation and growth of phosphonic acid monolayers on silicon oxide

Langmuir : the ACS Journal of Surfaces and Colloids
Abraham VegaYves J Chabal

Abstract

Phosphonic acid monolayers are being considered as versatile surface modification agents due to their unique ability to attach to surfaces in different configurations, including mono-, bi-, or even tridentate arrangements. Tethering by aggregation and growth (T-BAG) of octadecylphosphonic acid (ODPA) on silicon oxide surfaces has proven to be a robust method to establish a strong chemical bond. However, it requires a long processing time (> 48 h) that is a substantial drawback for industrial applications. We demonstrate here that the humidity level during processing is the most important parameter controlling the reaction. Using in situ Fourier Transform Infrared Spectroscopy (FTIR), we first show that the initially physisorbed layer obtained upon immersion in ODPA is composed of well-ordered bilayers and only reacts with the SiO(2) surface at 140 °C. Importantly, we show that the presence of water at the interface (determined by the humidity level) greatly influences the reaction time and completion. In humid environments (relative humidity, RH > 40%), there is no reaction, while in dry environments (RH < 16%), the reaction is essentially instantaneous at 140 °C. Ab initio calculations and modeling confirm that the degree of c...Continue Reading

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Citations

Jan 30, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Aline DebrassiHan Zuilhof
Nov 21, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Peter ThissenYves J Chabal
Aug 9, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Sidharam P PujariHan Zuilhof
Jul 28, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Gilles GuerreroP Hubert Mutin
Mar 16, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Rui Rijo CarvalhoHan Zuilhof
May 23, 2014·Angewandte Chemie·Sidharam P PujariHan Zuilhof
Jan 23, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Amélie ForgetVéronique Balland
Jul 12, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Austin W H Lee, Byron D Gates
Jul 30, 2016·International Journal of Molecular Sciences·Marie-Alix PizzoccaroAnne Julbe
May 31, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Austin W H Lee, Byron D Gates
Jul 4, 2017·ACS Applied Materials & Interfaces·Anna Cattani-Scholz
Sep 1, 2018·Nanotechnology·F SgarbossaA Carnera
Feb 13, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Li-Hong LiuYves J Chabal
Mar 16, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Maria Victoria Heiderick MachadoAngelo Malachias
Jan 11, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Rui Rijo CarvalhoHan Zuilhof
Dec 15, 2017·ACS Applied Materials & Interfaces·Maart van DruenenJustin D Holmes

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