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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/20758
Title: Supramolecular Switching of Ion-Transport in Nanochannels
Authors: Kumar, B. V.V.S.Pavan
Sonu K.P.
Rao K.V.
Sampath S.
George S.J.
Eswaramoorthy M.
Published in: ACS Applied Materials and Interfaces
Abstract: Noncovalent approaches to achieve smart ion-transport regulation in artificial nanochannels have garnered significant interest in the recent years because of their advantages over conventional covalent routes. Herein, we demonstrate a simple and generic approach to control the surface charge in mesoporous silica nanochannels by employing π-electron-rich charged motifs (pyranine-based donors) to interact with the surface of mesoporous silica modified with π-electron-deficient motifs (viologen-based acceptors) through a range of noncovalent forces, namely, charge-transfer, electrostatic, and hydrophobic interactions. The extent of each of these interactions was independently controlled by molecular design and pH, while employing them in a synergistic or antagonistic fashion to modulate the binding affinity of the charged motifs. This enabled the precise control of the surface charge of the nanochannels to achieve multiple ion-transport states. © 2018 American Chemical Society.
Citation: ACS Applied Materials and Interfaces, 10(28): 23458-23465
URI: https://doi.org/10.1021/acsami.8b07098
http://repository.iitr.ac.in/handle/123456789/20758
Issue Date: 2018
Publisher: American Chemical Society
Keywords: charge transfer interaction
ion transport
multiple gating states
nanochannels
noncovalent functionalization
supramolecular gating
ISSN: 19448244
Author Scopus IDs: 55266247800
57210961685
7404812655
7103194886
55392317100
55983367600
Author Affiliations: Kumar, B.V.V.S.P., Nanomaterials and Catalysis Lab, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O, Bangalore, 560064, India, Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, United Kingdom
Sonu, K.P., Nanomaterials and Catalysis Lab, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O, Bangalore, 560064, India
Rao, K.V., Supramolecular Chemistry Laboratory, New Chemistry Unit, School of Advanced Materials (SAMat), JNCASR, Jakkur P.O, Bangalore, 560064, India
Sampath, S., Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
George, S.J., Supramolecular Chemistry Laboratory, New Chemistry Unit, School of Advanced Materials (SAMat), JNCASR, Jakkur P.O, Bangalore, 560064, India
Eswaramoorthy, M., Nanomaterials and Catalysis Lab, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O, Bangalore, 560064, India
Funding Details: We thank Prof. C. N. R. Rao, FRS, for his support and encouragement, JNCASR and Department of Science and Technology, Government of India for financial support. We thank M. Kumar and A. Jain for helpful discussions. M.E. thanks Sheikh Saqr Career Award Fellowship. B.V.V.S.P.K. thanks CSIR and Sheikh Saqr Junior Fellowship. Council for Scientific and Industrial Research, South Africa, CSIR; Department of Science and Technology, Ministry of Science and Technology, India, डीएसटी; Jawaharlal Nehru Centre for Advanced Scientific Research, JNCASR
Corresponding Author: George, S.J.; Supramolecular Chemistry Laboratory, Jakkur P.O, India; email: george@jncasr.ac.in
Appears in Collections:Journal Publications [CY]

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