We report a rare combination of two unique properties of an azine based ligand (H3L): in a solid-state crystalline material it shows highly flexible and elastic behavior which on triggering with light results in slight deviation with phase transformation at the Single-Crystal-to-Single-Crystal (SCSC) level. Furthermore, in the solution state it acts as a highly selective, sensitive and reversible Al sensor with a detection limit of 42 nM.

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The requirement of sensitive diagnostic chips for small biomolecules has triggered the urgent development of versatile nanomaterial based platforms. Therefore, numerous materials have been designed with fascinating properties. Herein, we report a facile one-pot synthesis of MoS-rGO nanoflowers grown by the hydrothermal method and their applicability in the simultaneous sensing of AA, DA and UA. The structure and morphology of nanoflowers have been probed by various physico-chemical techniques such as XRD, SEM/TEM, AFM, Raman and XPS. Furthermore, these nanoflowers were used to construct a glassy carbon based working electrode (MoS-rGO/GCE), by a facile drop-casting method in the absence of any commercial binder. The electrochemical investigations revealed high separating potency of the MoS-rGO/GCE towards AA, DA and UA with distinguishable oxidation potentials (AA-DA = 204 mV and DA-UA = 122 mV) and a notable detection limit and reasonable sensitivity for each of these biomolecules. The charge transfer resistance and capacitive components obtained by electrochemical impedance spectroscopy (EIS) were found to be in agreement with the voltammetric observations. The observed synergy between MoS and rGO opens up new possibilities to consider the MoS-rGO nanostructures as the cutting edge material for electrochemical sensor development.