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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
R. K. Pandey, H. Pandey, and A. Nayak 
Corresponding Authors:
R. K. Pandey, A. Nayak 
DOI #:
https://doi.org/10.1002/slct.201800625 
Title:
Electrochemical Charge Transfer Through the Supramolecular Discogen‐DNA Hybrid Multi‐layered Assembly 
Journal:
Chemistry Select 
Year:
2018 
Volume:
Page:
5874 
Keywords:
Electrochemical Charge Transfer, Supramolecular Discogen-DNA  
Abstract:
In the present work, charge transfer phenomenon through thefilms of an ionic discotic liquid crystal (discogen) that ispyridinium tethered with hexaalkoxytriphenylene (PyTp) and itscomplex with DNA (PyTp-DNA) was studied by using electro-chemical methods. The PyTp and PyTp-DNA hybrid films werefirst formed at the air-water interface and then transferred ontothe gold substrates by Langmuir-Blodgett (LB) technique.Electrochemical measurements carried out on these films inthree different redox systems, namely, ferrocene, hexaamminer-uthenium (III), and ferrocyanide, revealed that the ferroceneand the hexaammineruthenium (III) systems allow the electron transfer reaction between redox probes and metal, whereas theferrocyanide system completely blocks it. The electrochemicalresponse of the films, in the former two systems, has beenattributed to the bridge mediated electron transfer process,whereas, in the ferrocyanide system, the impermeability ofredox ions through these LB films is responsible for thecomplete blocking of electron transfer. Based on the observedresults, this work highlights the possibility of novel chargetransfer properties of discogen-DNA type hybrid films forapplications in molecular electr onics 
Entered by:
Venkata Dantham on 2020-08-02 
 
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