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A new benzimidazolium incorporated chemodosimeter affording dual chromogenic and fluorescence switch-on signaling for the selective targeting of cyanide

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dc.contributor.author Mashraqui, Sabir H.
dc.contributor.author Betkar, Rupesh
dc.contributor.author Ghorpade, Sushil
dc.contributor.author Frontera Beccaria, Antonio
dc.date.accessioned 2018-09-25T10:38:11Z
dc.identifier.uri http://hdl.handle.net/11201/147653
dc.description.abstract [eng] We have designed and synthesized a new chemodosimeter, Benzolin-A, which selectively responds to toxic cyanide by dual colorimetric and fluorescence turnon responses in buffered aqueous DMSO. In the presence of cyanide, we observe absorbance red shift of 108 nm (color changing from colorless to yellow) and fivefold fluorescence enhancement. The 1H NMR studies confirm the nucleophilic addition mechanism, and consistent with the experimental findings, the computational work predicts the feasibility of photoelectron transfer or energy transfer process in the native probe, as well as enhanced internal charge transfer in the Benzolin-A-cyanide adduct. Noteworthily, several background anions, such as F-, Cl-, AcO-, SCN-, HSO4 -, NO3 -, Br-, I- and H2PO4 - exhibit none or insignificant optical perturbations.
dc.format application/pdf
dc.relation.isformatof Versió postprint del document publicat a: https://doi.org/10.1007/s10847-012-0198-5
dc.relation.ispartof Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2013, vol. 76, p. 293-300
dc.subject.classification 54 - Química
dc.subject.other 54 - Chemistry. Crystallography. Mineralogy
dc.title A new benzimidazolium incorporated chemodosimeter affording dual chromogenic and fluorescence switch-on signaling for the selective targeting of cyanide
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/acceptedVersion
dc.date.updated 2018-09-25T10:38:11Z
dc.date.embargoEndDate info:eu-repo/date/embargoEnd/2075-01-01
dc.embargo 2075-01-01
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess
dc.identifier.doi https://doi.org/10.1007/s10847-012-0198-5


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