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We investigated pH transformed ZnO NPs viz ZnO nanobullets and ZnO nanograins at pH 11 and 12 respectively, synthesized by co‐precipitation method. The structural, morphological, chemical, compositional and optical properties of synthesized ZnO NPs were analysed by using X‐ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X‐ray Spectroscopy (EDAX) and Ultra‐Violate Visible spectroscopy (UV‐Vis). The Noteworthy feature of ZnO NPs in presence of NaPTS leads a speedy formation of flavanones from the reaction of an aldehyde and o‐hydroxy acetophenone. Thus, it imparted the first room‐temperature brisk synthesis of flavanones in an aqueous medium.

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A new series of thiophene anchored 1,3,4-thiadiazole, 1,2,4-triazole, 2-heteryl chromone, 1,5-benzothiazepine, pyrazoline, 2-styryl chromone derivatives containing fluorine are synthesized, characterized by spectral methods and screened them for various biological activities.

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