Controlling Microarray Feature Spreading and Response Stability on Porous Silicon Platforms by Using Alkene-Terminal Ionic Liquids and UV Hydrosilylation
- Shruti TrivediShruti TrivediDepartment of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United StatesMore by Shruti Trivedi
- Sudhir RavulaSudhir RavulaDepartment of Comprehensive Dentistry and Biomaterials, Louisiana State University Health Science Center, School of Dentistry, 1100 Florida Avenue, New Orleans, Louisiana 70119, United StatesMore by Sudhir Ravula
- Gary A. BakerGary A. BakerDepartment of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United StatesMore by Gary A. Baker
- Siddharth PandeySiddharth PandeyDepartment of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, IndiaMore by Siddharth Pandey
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- Frank V. Bright*Frank V. Bright*Email: [email protected]. Fax: (716) 645-6963. Tel: +1(716) 645-4180.Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United StatesMore by Frank V. Bright
In an attempt to develop reversible sensors based on ionic liquid/porous silicon (IL/pSi) platforms, we introduce an approach using task-specific, alkene-terminal ILs (AT-ILs) for direct grafting to the hydrogen-passivated as prepared-pSi (ap-pSi) surface via UV-hydrosilylation to address previous shortcomings associated with IL pattern impermanence (i.e., spread). By employing photoluminescence emission (PLE) and Fourier-transform infrared (FT-IR) imaging measurements, we demonstrate that the covalent grafting of AT-ILs onto the ap-pSi surface via photochemical hydrosilylation not only mitigates such feature spreading but also greatly improves PLE pattern stability. Significantly, we have discovered that, upon hydrosilylation, the resulting contact pin printed IL features remain stable to repeated challenges by toluene vapors, demonstrating the utility of AT-IL hydrosilylation for producing high-fidelity microarray features on pSi toward robust optical sensory microarrays.
This article is cited by 1 publications.
- Yufeng Wang, Fatemeh Parvis, Md. Iqbal Hossain, Ke Ma, Romana Jarošová, Greg M. Swain, Gary J. Blanchard. Local and Long-Range Organization in Room Temperature Ionic Liquids. Langmuir 2021, 37 (2) , 605-615. https://doi.org/10.1021/acs.langmuir.9b03995