Preparation of soluble functional polymers by modification of nanosized polyacetylene

Matnishyan, H. A.; Akhnazaryan, T. L.; Voskanyan, P. S.; Korshak, Yu. V.

doi:10.1016/j.eurpolymj.2008.12.023

Cited by 1 publication

(1 citation statement)

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“…For many years polyacetylene derivatives, (HCCR) n , have been the object of wide scientific interest due to their peculiar physicochemical characteristics, such as electronic semiconductivity, high solubility, stability and ease of synthesis,8 and, due to encouraging potential for sensors9 and biotechnology applications,10 this interest is now renewed 11. In particular, many catalyst‐assisted syntheses of these polymers with quaternary ammonium functionality have been thoroughly investigated.…”

Section: Introductionmentioning

confidence: 99%

Soluble polymers of monosubstituted acetylenes with quaternary ammonium pendant groups: structure and morphology

Venditti

Fratoddi

Battocchio

et al. 2011

Polymer International

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Soluble conjugated polymers were obtained in the presence of Pd(II), Pt(II) and Rh(I) complexes from monosubstituted acetylene 3-dimethylamino-1-propyne (H-C equivalent to CCH(2)N(CH(3))(2), 1) and the corresponding hydrochloride (H-C equivalent to CCH(2)N(CH(3))2 center dot HCl, 2) and hydrobromide (H-C equivalent to CCH(2)N(CH(3))(2)center dot HBr, 3) derivatives. A series of reactions were performed to achieve the optimization of the polymerization conditions. The highest yields were found for polymers synthesized using Pd(II) bisacetylides specially prepared, i.e. trans-[Pd(PPh(3))(2)(C equivalent to CCH(2)N(CH(3))(2))(2)], trans-[Pd(PPh(3))(2)(C equivalent to CCH(2)N(CH(3))(2))(2)HCl] and trans-[Pd(PPh(3))(2)(C equivalent to CCH(2)N(CH(3))(2))(2)HBr], respectively. The dimension and size distribution of the polymers were investigated using dynamic light scattering. Polymers containing quaternary ammonium groups showed evidence of a hydrodynamic radius of about 300 nm if prepared with the Rh(I) catalyst and of 160 nm if prepared with the Pd(II) catalysts. Polymers obtained from 1 showed smaller hydrodynamic radius compared to polymers obtained from 2 and 3, regardless the polymerization catalyst. The ionic polymeric materials were soluble in organic solvents and, more interestingly, in water. The formation of nanoparticles with pearl-like morphology was achieved using a recently developed osmosis-based method, with dimensions varying from 60 nm up to micrometres. (C) 2011 Society of Chemical Industr

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