Photophysical Characterization and Recognition Behaviour of a Bis(dansylated) Polyoxometalate. Issue 21 (22nd June 2016)

• Record Type: Journal Article
• Authors: Carraro, Mauro; Bergamini, Giacomo; Di Lauro, Michele; Modugno, Gloria; Baroncini, Massimo; Ceroni, Paola; Bonchio, Marcella
• Is Part Of: European journal of inorganic chemistry. Issue 21(2016)
• Page Start: 3405
• Page End: 3410
• Publication Date: 2016-06-22
• Subjects: Polyoxometalates -- Luminescence -- Recognition -- Hybrids -- Lanthanides; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201600636
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : The bis(dansylated) polyoxometalate ( n Bu4 N)4 [γ‐SiW10 O36 {(Me2 N)C10 H6 SO2 NH(CH2 )3 Si}2 O] has been investigated to establish the impact of the inorganic polyanionic domain on the photophysical behaviour of the appended dansyl chromophore. The interactions of this molecular hybrid with Lewis acids (lanthanide cations) and with an aromatic cationic molecule ( N, N′ ‐2, 7‐didecyldiazapyrenium) have also been monitored by multiple techniques, including spectrofluorimetry, Z‐potential, 1 H NMR spectroscopy, transmission electron microscopy. The different spectral behaviour, coupled with the morphological evolution of the resulting nanostructures, highlights the capability of the hybrid polyoxometalate to interact, acting as a ditopic receptor, with different chemical substrates. Abstract : A bis(dansylated) polyoxotungstate has been characterized to highlight the photophysical interplay between its two functional domains: a tweezer‐like motif, defined by the dansyl units, and the polyanionic inorganic scaffold. The two subunits shape a ditopic receptor, being able to interact with lanthanide ions and with cationic organic chromophores, which trigger different spectral and morphological responses