Publications by authors named "Vinod P Boricha"
Two novel Rhodamine-pyrazolone-based colorimetric off-on fluorescent chemosensors for Fe(3+) ions were designed and synthesized using pyrazolone as the recognition moiety and Rhodamine 6G as the signalling moiety. The photophysical properties and Fe(3+) -binding properties of sensors L(1) and L(2) in acetonitrile-aqueous solution were also investigated. Both sensors successfully exhibit a remarkably 'turn-on' response, toward Fe(3+) , which was attributed to 1: 2 complex formation between Fe(3+) and L(1) /L(2) .
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- The study focuses on a novel [2]pseudorotaxane complex formed using a NO6-based azacrown ether as the host and various guest molecules, demonstrating unique fluorescence and electron transfer properties.
- Different guest molecules (G1, G2, G3, G4) were tested, showing that only G4, with a bulkier stopper, fails to form the complex; the size of the stopper affects the complex's stability and association constant.
- Thermodynamic analysis reveals the formation of the complexes is primarily driven by a positive entropic gain, and differences in proton exchange between the acidic NH2(+) of guests impact the efficiency of the observed photoinduced electron transfer-cou