Green fluorescent aggregates of diphenylpyrimidinone–salicylideneamine show AIE + ESIPT in 99% H2O:CH3CN for the visualization of fingerprints on aluminium, steel, glass, ceramic tile and metal coin surfaces.

DPSA shows applications in establishing the individuality of three subjects using the 1st (pattern of arch, loop or whorl) and 2nd (minutiae details of dots, ridge ending, core and delta) level of information.

Aggregates ofPS-PDIafter Pd0based depropargylation show de-aggregation and near-IR, ratiometric absorbance changes in water and live HeLa cells.

We report a Pd-catalyzed intramolecular [3C + 2C + 2C] cycloaddition between alkylidenecyclopropanes, alkynes and alkenes. The method provides synthetically relevant 5-7-5 tricyclic structures, with good chemoselectivity and complete diastereoselectivity.

The aggregates of perylenediimide based chemosensor (PDI 1) undergo de-aggregation induced fluorescence quenching selectively with ClO 4 À ions both in the solution and in the solid phase and can detect ClO 4 À ions in drinking water and fireworks. PDI 1 is permeable to C6 glioma cells, and ClO 4 À can be detected using confocal microscopy.

Herein we report, a single-pot multistep conversion of inactivated carboxylic acids to various N-containing compounds using a common synthetic methodology. The developed methodology rendered the use of carboxylic acids as a direct surrogate of primary amines, for the synthesis of primary ureas, secondary/tertiary ureas, O/S-carbamates, benzoyl ureas, amides, and N-formyls, exploiting the Curtius reaction. This approach has a potential to provide a diversified library of N-containing compounds, starting from a single carboxylic acid, based on the selection of the nucleophile.

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Chemosensor 1 shows three different responses towards Cu2+, acetate and Cu(OAc)2 ion pair following triple-signaling mechanisms and also demonstrate fabrication of INH, IMP, AND, NOR logic gates.