Molecular logic operations based on optical detection of sulfur mustard simulant using pyridine appended Mg-porphyrazine complex Dedicated to Late Prof. Dr. Tarkeshwar Gupta.

Neelam, Vikram Singh, Bhaskaran Shankar, Ramasamy Shanmugam, Satish K. Awasthi, Rinkoo D. Gupta

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Selective detection of sulfur mustard simulant, 2-chloroethyl ethyl sulfide (CEES) is performed using specifically designed pyridine appended Mg-porphyrazine complex (1). Interaction of CEES with pyridine units of 1 leads to perturbation/reduction in absorbance of the Q-band of 1 and the process is, thus, monitored using UV-vis spectroscopic method. Interestingly, treating the CEES-1 solution with KMnO4 solution results in reappearance of Q-band of 1 and allows reuse of 1 by simple filtration. The alkylating ability of CEES and KMnO4 oxidation of CEES-1 appears to be playing an important role in the detection/degradation process, thereby serving the dual purpose. The chemical sensing is then used as a platform for generating different input-based combinatorial and sequential molecular logic gate(s) allowing facile information processing and as an information security system in the form of a keypad lock.

Original languageEnglish
Pages (from-to)85-91
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume227
DOIs
StatePublished - 1 May 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Funding

This work is financially supported by the Department of Atomic Energy-Board of Research in Nuclear Sciences ( DAE -BRNS)( 2010/20/37P/1/BRNS/1068-1 ) BARC, Mumbai. Neelam sincerely thanks DAE-BRNS for project fellowship. VS thanks UGC for fellowship. RDG thanks Department of Science and Technology ( SERB/F/1424 ) for financial assistance.

FundersFunder number
Department of Atomic Energy-Board of Research in Nuclear Sciences
Department of Atomic Energy, Government of India2010/20/37P/1/BRNS/1068-1
University Grants Committee
Bhabha Atomic Research Centre
Department of Science and Technology, Government of KeralaSERB/F/1424

    Keywords

    • CEES
    • Chemical warfare
    • Molecular logic
    • Porphyrazine
    • Sulfur mustard
    • UV-vis

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