Synthetic approach towards ‘click’ modified chalcone based organotriethoxysilanes; UV-Vis study

Abstract

Synthetic approach towards 'Click' modified chalcone based organotriethoxysilanes; UV-Vis study AbstractThe efficient linkage of conjugate chalcone to n-propyltriethoxysilanes (nPTES) via 1,2,3-triazole is being reported, in good yield which involves Claisen-Schmidt condensation followed by Copper (I) catalyzed azide-alkyne cycloaddition (CuAAC) reaction as synthetic intermediary routes. Two different approaches followed for syntheses, restrict us to follow single pathway exclusively as an efficient route for organotriethoxysilanes (OTES) preparation. The performance of click reaction under thermal reaction conditions has also been optimized using [CuBr(PPh 3 ) 3 ] catalyst. The photoelectronic spectroscopy study in UVVis region show significant absorption maxima in range of 300-325 nm. Moreover, the solvatochromic aspects showing the effect of change in solvent polarity on absorption maxima is being investigated for the first time on functionalised OTES.

Synthesis and in vitro photodynamic activity of aza-BODIPY-based photosensitizers

“…Compound 5 was identical to the compound described in the literature. 30,31 4.1.2.2. Synthesis of 4-nitro-1,3-diphenylbutan-1-one ( 6) or 4-nitro-1-phenyl-3-(4-prop-2-ynyloxy-phenyl)butan-1-one (7).…”

Cu(i)-catalysed 1,2,3-triazole stitched chalcomer assembly as Pb(ii) and Cu(ii) ion sensor: DFT and docking scrutiny

“…[15][16][17] The combination of these motifs with the 1,2,3-triazole moiety via 'Click' (CuAAC) methodology has emerged as the most preferred synthetic route to form chalcone appended 1,4-disubstituted-1,2,3-triazole derivatives. 18 There is an increased demand for these moieties owing to their extensive selectivity for ion detection, 19,20 in addition to their signicant biological properties such as antibacterial, antioxidative, antifungal activities etc.…”

Molecular keypad controlled circuit for Ce(iii) and NO3− ions recognition by μw synthesized silicon-embedded organic luminescent sensor

“…[5][6][7] 'Click Silylation' technique introduced a terminal siloxy group into the luminiphore bridged by 1,2,3-triazole linker. [8][9][10][11][12][13][14][15] The naphthyl moiety (acting as active unit) linked via 1,2,3-triazole (spacer) has been explored as an ionic uorophore can nd potential application in bio-imaging technique owing to its specic excitation and emission UV values, unaltered by any interference from other metal ions. 7,16,17 The triazole linker creates an effective link for host-guest binding yielding uorescence quenching or enhancement, accompanied by batho-or hypso-chromic shi.…”