| Title: | Application of Organophosphonic Acids by One-Step Supercritical CO2 on 1D and 2D Semiconductors: Toward Enhanced Electrical and Sensing Performances |
| Author(s): | Bhartia B; Bacher N; Jayaraman S; Khatib S; Song J; Guo S; Troadec C; Puniredd SR; Srinivasan MP; Haick H; |
| Address: | "double daggerDepartment of Chemical and Biomolecular Engineering, National University of Singapore,4 Engineering Drive 4, Singapore 117585, Singapore. section signThe Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 3200003, Israel. perpendicularEnvironmental and Water Technology Centre of Innovation, Ngee Ann Polytechnic, 535 Clementi Rd, Singapore599489, Singapore. parallelInstitute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "Formation of dense monolayers with proven atmospheric stability using simple fabrication conditions remains a major challenge for potential applications such as (bio)sensors, solar cells, surfaces for growth of biological cells, and molecular, organic, and plastic electronics. Here, we demonstrate a single-step modification of organophosphonic acids (OPA) on 1D and 2D structures using supercritical carbon dioxide (SCCO2) as a processing medium, with high stability and significantly shorter processing times than those obtained by the conventional physisorption-chemisorption method (2.5 h vs 48-60 h).The advantages of this approach in terms of stability and atmospheric resistivity are demonstrated on various 2D materials, such as indium-tin-oxide (ITO) and 2D Si surfaces. The advantage of the reported approach on electronic and sensing devices is demonstrated by Si nanowire field effect transistors (SiNW FETs), which have shown a few orders of magnitude higher electrical and sensing performances, compared with devices obtained by conventional approaches. The compatibility of the reported approach with various materials and its simple implementation with a single reactor makes it easily scalable for various applications" |
| Keywords: | "Biosensing Techniques/*instrumentation Carbon Dioxide/*chemistry Chromatography, Supercritical Fluid/*methods Conductometry/*instrumentation Equipment Design Equipment Failure Analysis Materials Testing Organophosphonates/*chemistry *Semiconductors modifi;" |
| Notes: | "MedlineBhartia, Bhavesh Bacher, Nadav Jayaraman, Sundaramurthy Khatib, Salam Song, Jing Guo, Shifeng Troadec, Cedric Puniredd, Sreenivasa Reddy Srinivasan, Madapusi Palavedu Haick, Hossam eng Research Support, Non-U.S. Gov't 2015/06/20 ACS Appl Mater Interfaces. 2015 Jul 15; 7(27):14885-95. doi: 10.1021/acsami.5b03597. Epub 2015 Jul 1" |
