Photo-oxidation Studies of 4-(Chloromethyl)phenyltrichlorosilane on Silicon and Titanium Oxides

Nadirah Ali Sabri; Shahrul Ainliah Alang Ahmad

doi:10.14233/ajchem.2016.19747

Issue

Vol. 28 No. 7 (2016): Vol 28 Issue 7

Issue Published : March 31, 2016

This work is licensed under a Creative Commons Attribution 4.0 International License.

Photo-oxidation Studies of 4-(Chloromethyl)phenyltrichlorosilane on Silicon and Titanium Oxides

https://doi.org/10.14233/ajchem.2016.19747

Nadirah Ali Sabri

Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

Shahrul Ainliah Alang Ahmad

Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

Corresponding Author(s) : Shahrul Ainliah Alang Ahmad

ainliah@upm.edu.my

Asian Journal of Chemistry, Vol. 28 No. 7 (2016): Vol 28 Issue 7
Article Published : March 31, 2016

Abstract

The rates of photo-oxidation of 4-(chloromethyl)phenyltrichlorosilane (CMPS) formed on titanium oxide (TiO₂) and silicon oxide (SiO₂) substrates were studied. The optimized self-assembly of CMPS films on SiO₂ and TiO₂ were investigated which subsequently used for comparing photochemical reactions by exposing samples under deep UV of 254 nm. Upon the UV irradiation, the tail group of CMPS monolayers; chloro benzyl group is converted to aldehyde group and further exposure leads to the formation of polar group (carboxylic acid) which generates surfaces with a high surface free energy and a hydrophilic character. Analyses of contact angle, Fourier transform infrared and X-ray photoelectron spectroscopy (XPS) were performed to monitor the products generated upon UV irradiation. It was found that highly efficient and rapid photo-oxidation was observed for CMPS on TiO₂, a complete conversion within minutes compared to CMPS on SiO₂. The use of TiO₂ has shown that the rate is thrice faster than SiO₂ which is efficient as a photocatalytic oxidation. The resulting carboxylic group terminated surface was subsequently derivatized using 2-amino-1,1,1-trifluoroethane (TFEA). Contact angle and XPS measurements of post-derivatization indicated that the surface functionalization was extensive.

Keywords

Self-assembled monolayers 4-(Chloromethyl)phenyltrichlorosilane Photo-oxidation Titanium oxide Photocatalyst

Sabri, N. A., & Alang Ahmad, S. A. (2016). Photo-oxidation Studies of 4-(Chloromethyl)phenyltrichlorosilane on Silicon and Titanium Oxides. Asian Journal of Chemistry, 28(7), 1531–1535. https://doi.org/10.14233/ajchem.2016.19747

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L. Srisombat, A.C. Jamison and T.R. Lee, Colloids Surf. A, 390, 1 (2011); doi:10.1016/j.colsurfa.2011.09.020.

A. Ulman, Chem. Rev., 96, 1533 (1996); doi:10.1021/cr9502357.

S.A. Ahmad, A. Hucknall, A. Chilkoti and G.J. Leggett, Langmuir, 26, 9937 (2010); doi:10.1021/la100438d.

O. El Zubir, I. Barlow, G.J. Leggett and N.H. Williams, Nanoscale, 5, 11125 (2013); doi:10.1039/c3nr04701f.

G. Tizazu, O. El-Zubir, S.R.J. Brueck, D.G. Lidzey, G.J. Leggett and G.P. Lopez, Nanoscale, 3, 2511 (2011); doi:10.1039/c0nr00994f.

Y. Wan, B. Sun, Z. Xu and W. Chao, Appl. Surf. Sci., 258, 4347 (2012); doi:10.1016/j.apsusc.2011.12.111.

J. Howgate, S.J. Schoell, M. Hoeb, W. Steins, B. Baur, S. Hertrich, N. Nickel, I.D. Sharp, M. Stutzmann and M. Eickhoff, Adv. Mater., 22, 2632 (2010); doi:10.1002/adma.200903756.

F. Schreiber, Prog. Surf. Sci., 65, 151 (2000); doi:10.1016/S0079-6816(00)00024-1.

J.P. Lee, H.K. Kim, C.R. Park, G. Park, H.T. Kwak, S.M. Koo and M.M. Sung, J. Phys. Chem. B, 107, 8997 (2003); doi:10.1021/jp030077k.

S. Sun, M. Montague, K. Critchley, M.-S. Chen, W.J. Dressick, S.D. Evans and G.J. Leggett, Nano Lett., 6, 29 (2006); doi:10.1021/nl051804l.

R.E. Ducker and G.J. Leggett, J. Am. Chem. Soc., 128, 392 (2006); doi:10.1021/ja0555771.

R.E. Ducker, S. Janusz, S. Sun and G.J. Leggett, J. Am. Chem. Soc., 129, 14842 (2007); doi:10.1021/ja0749800.

J.C. Love, L.A. Estroff, J.K. Kriebel, R.G. Nuzzo and G.M. Whitesides, Chem. Rev., 105, 1103 (2005); doi:10.1021/cr0300789.

T. Ye, D. Wynn, R. Dudek and E. Borguet, Langmuir, 17, 4497 (2001); doi:10.1021/la010697h.

J. Yu and X. Zhao, Mater. Res. Bull., 36, 97 (2001); doi:10.1016/S0025-5408(00)00475-X.

K. Kato, A. Tsuge and K. Niihara, J. Am. Ceram. Soc., 79, 1483 (1996); doi:10.1111/j.1151-2916.1996.tb08753.x.

C. Garzella, E. Comini, E. Tempesti, C. Frigeri and G. Sberveglieri, Sens. Actuators B, 68, 189 (2000); doi:10.1016/S0925-4005(00)00428-7.

S.A. Ahmad, L.S. Wong, E. Ul-Haq, J.K. Hobbs, G.J. Leggett and J. Micklefield, J. Am. Chem. Soc., 133, 2749 (2011); doi:10.1021/ja1103662.

M.H. Habibi and M. Nasr-Esfahani, Dyes Pigments, 75, 714 (2007); doi:10.1016/j.dyepig.2006.07.032.

S. Pan, D.G. Castner and B.D. Ratner, Langmuir, 14, 3545 (1998); doi:10.1021/la971212l.

A.L. Linsebigler, G. Lu and J.T. Yates, Chem. Rev., 95, 735 (1995); doi:10.1021/cr00035a013.

Issue

Vol. 28 No. 7 (2016): Vol 28 Issue 7

Photo-oxidation Studies of 4-(Chloromethyl)phenyltrichlorosilane on Silicon and Titanium Oxides

Corresponding Author(s) : Shahrul Ainliah Alang Ahmad

Abstract

Keywords

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