Self Assembled Monolayer Reagent
Product codeF340 FHPA
Chemical name1H,1H,2H,2H-Perfluoro-n-hexylphosphonic acid
|Unit size||Price||Item Code|
Phosphonic acid derivatives are used for surface modification on oxidized metals such as Al2O31), TiO22), ZrO23), SiO24), Mica5), stainless(SS316L) 6), nitinol7), hydroxyapatite8), AgO9), ZnO10), ITO11,12).
For a long time, organosilanes have been used to form self assembled monolayer (SAM) on the metal oxide. However, it is not always adaptable in the applications due to the poor stability and polymerization of the reagent with each other. On the other hand, phosphonic acid derivatives equally form a SAM on the metal oxide despite being very stable compounds. Also, phosphonic acid derivatives have been reported to use formation of more stable and dense SAM than organosilanes. Klauk et. al. and Sekitani et. al. show alkyl phosphonate SAM on Al2O3 is more useful than the trichlorosilane derivatives SAM as an conductor film of an organic transistor13).
Sharma et. al. have reported the work function of ITO substrate increases by the oxygen plasma treatment or modifying ITO substrate with phosphonic acid (FOPA) containing perfluoroalkyl group. However, the increased level of work function maintains with FOPA modified substrate for 246 hours, while the work function immediately decreases with the substrate treated by oxygen plasma11). In addition, the organic thin-film solar cell fabricated using the modified TO with FOPA increase the stability of light intensity, the driving voltage, and life time.
There are three perfluoro based phosphonic acids available with different alkyl lengths.
1) T. Hauffman, O. Blajiev, J. Snauwaert, C. van Haesendonck, A. Hubin, H. Terryn, "Study of the self-assembling of n-octylphosphonic acid layers on aluminum oxide", Langmuir, 2008, 24 (23), 13450.
2) P. Thissen, M. Valtiner, G. Grundmeier, "Stability of Phosphonic Acid Self-Assembled Monolayers on Amorphous and Single-Crystalline Aluminum Oxide Surfaces in Aqueous Solution", Langmuir, 2010, 26 (1), 156.
3) W. Gao, L. Reven, "Solid-state NMR-studies of self-assembled monolayers", Langmuir, 1995, 11 (6), 1860.
4) S. Marcinko, A. Y. Fadeev, "Hydrolytic Stability of Organic Monolayers Supported on TiO2 and ZrO2", Langmuir, 2004, 20 (6), 2270.
5) J. Schwartz, M. J. Avaltroni, M. P. Danahy, B. M. Silverman, E. L. Hanson, J. E. Schwarzbauer, K. S. Midwood, E. S. Gawalt, " Cell attachment and spreading on metal implant materials", J. Mat. Sci. Eng. C, 2003, 23, 395.
6) B. M. Silverman, K. A. Wieghaus, J. Schwartz, "Comparative properties of siloxane vs phosphonate monolayers on a key titanium alloy", Langmuir, 2005, 21 (1), 225.
7) N. Adden, L. J. Gamble, D. G. Castner, A. Hoffmann, G. Gross, H. Menzel, "Phosphonic Acid Monolayers for Binding of Bioactive Molecules to Titanium Surfaces", Langmuir, 2006, 22, 8197.
8) E. L. Hanson, J. Schwartz, B. Nickel, N. Koch, M. F. Danisman, "Bonding self-assembled, compact organophosphonate monolayers to the native oxide surface of silicon", J. Am. Chem. Soc. 2003, 125 (51), 16074.
9) M. Dubey, T. Weidner, L. J. Gamble, D. G. Castner, "Structure and Order of Phosphonic Acid-Based Self-Assembled Monolayers on Si(100)", Langmuir, 2010, 26 (18), 14747.
10) A. Vega, P. Thissen, Y. J. Chabal, "Environment-Controlled Tethering by Aggregation and Growth of Phosphonic Acid Monolayers on Silicon Oxide", Langmuir, 2012, 28, 8046.
11) P. Thissen, A. Vega, T. Peixoto, Y. J. Chabal, "Controlled, Low-Coverage Metal Oxide Activation of Silicon for Organic Functionalization: Unraveling the Phosphonate Bond", Langmuir, 2012, 28 (50), 17494.
12) J. T. Woodward, A. Ulman, D. K. Schwartz, "Self-assembled monolayer growth of octadecylphosphonic acid on mica", Langmuir, 1996, 12 (15), 3626.
13) A. Raman, M. Dubey, I. Gouzman and E. S. Gawalt, "Formation of self-assembled monolayers of alkylphosphonic acid on the netive oxide surface of SS316L", Langmuir, 2006, 22, 6469.
14) G. Zorn, R. Adadi, R. Brener, V. A. Yakovlev,| I. Gotman, E. Y. Gutmanas, C. N. Sukenik, "Tailoring the Surface of NiTi Alloy Using PIRAC Nitriding Followed by Anodization and Phosphonate Monolayer Deposition", Chem. Mater. 2008, 20, 5368.
15) R. Quinones and E. S. Gawalt, "Polystyrene formation on monolayer-modified nitinol effectively controls corrosion", Langmuir, 2008, 24, 10858.
16) S. C. D’Andrea and Al. Y. Fadeev, "Covalent surface modification of calcium hydroxyapatite using n-alkyl- and n-fluoroalkylphosphonic acids", Langmuir, 2003, 19, 7904.
17) B. Zhang, T. Kong, W. Xu, R. Su, Y. Gao and G. Cheng, "Surface functionalization of zinc oxide by carboxyalkylphosphonic acid self-assembled monolayers", Langmuir, 2010, 26(6), 4514.
18) A. Sharma, B. Kippelen, P. J. Hotchkiss and S. R. Marder, "Stabilization of the work function of indium tin oxide using organic surface modifiers in organic light-emitting diodes", Appl. Phys. Lett., 2008, 93, 163308.
19) W. Ma, H. Wu, Y. Higaki, H. Otsuka, and A. Takahara, "A "non-sticky" Superhydrophobic Surface Prepared by Self-assembly of Fluoroalkyl Phosphonic Acid on a Hierarchically Micro/Nanostructured Alumina Gel film", Chem. Commun., 2012, 48, 6824.
20) W. Ma, Y. Higaki, H. Otsuka and A. Takahara, "Perfluoropolyether-infused Nano-texture: a Versatile Approach to Omniphobic Coatings with Low Hysteresis and High Transparency", Chem. Commun., 2013, 49, 597.
Handling and storage condition
|Appearance：||White powder or crystalline powder|
|Solubility in Methyl alcohol：||To pass test (clear, colorless)|