Poly cluster function

Mixtures of variously substituted Os clusters can be avoided by using functionalized poly(styrene-DVB) with different concentrations and distribution of ligands. 

Other functional core moieties include stable TEMPO-based radicals for controlled radical polymerization,342 crown ethers,343 344 hexacyclenes,170 poly-(quarternary ammonium) cations,345 ethylene thio-lates,346,347 calixarenes,348-352 cyclodextrins,178 inorganic clusters,93-95 340 353,354 dichalcogenides,355 and silses-quioxanes.356... 

Time-resolved fluorescence spectroscopy and fluorescence anisotropy measurements have been applied to study (i) excimer formation and energy transfer in solutions of poly(acenaphthalene) (PACE) and poly(2-naphthyl methacrylate) (P2NMA) and (ii) the conformational dynamics of poly(methacrylic acid) (PMA) and poly (acrylic acid) as a function of solution pH. For PACE and P2NMA, analysis of projections in which the spectral, temporal and intensity information are simultaneously displayed have been used to re-examine kinetic models proposed to account for the complex fluorescence decay behaviour that is observed. Time-resolved fluorescence anisotropy measuranents of fluorescent probes incorporated in PMA have led to the proposal of a "connected cluster" model for the hypercoiled conformation of this polymer existing at low pH. 

These membranes are characterized by their structure and function with resin formulation based on the poly-tetrafluoroethylene backbone with short polyether side-chains terminating in sulfonic acid or carboxylic acid groups. These functional groups can join through ionic cross-links forming ion-clusters. 

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