Arylene-ethynylene polymer

Various complexes with briging ethynylene ligands 872-874 are formed as listed below Cr(CO)3-containing arylene ethynylene polymer 875 and a Ge-containing polymer 876 have been prepared and fully characterized. 

Zheng J, Swager TM (2005) Poly(arylene ethynylene)s in chemosensing and biosensing. Adv Polym Sci 177 151-179... 

Egbe, D.A.M., Cornelia, B., Nowotny, J., Gunther, W., and Klemm, E. 2003. Investigation of the photophysical and electrochemical properties of alkoxy-substituted arylene-ethynylene/ arylene-vinylene hybrid polymers. Macromolecules 36, 5459-5469. 

D. A. M. Egbe, L. H. Nguyen, B. Carbonnier, D. Muhlbacher, and N. S. Sariciftci. Thiophene-containing poly(arylene-ethynylene)-a/t-poly(aryl-ene-vinylene)s Synthesis, characterisation and optical properties. Polymer, 46(23) 9585-9595, November 2005. 

Theoretically, the inherent rigidity of most conducting polymers leads to the generation of micropores (diameters of <2 nm) with high specific surface areas, for example, above 1000 m g for microporous poly(arylene ethynylene) (PAE) materials. Mesopores (diameters of 2-50 nm) and macroporous (diameters of >50 nm) are also produced for some conducting polymers, such as PANI and PPy by chemical oxidation or electropolymerization of the corresponding monomers in the presence of organic molecules or colloid particles as templates. The importance of the porous structure has inspired people... 

Despite the fact that the potential for alkyne metathesis has clearly been demonstrated during the past few decades, alkyne metathesis has not yet replaced Pd catalysis for the preparation of linear polymers. To date, the generation of high-symmetry arylene-ethynylene macrocycles has no serious competition to alkyne metathesis in terms of simplicity and efficiency. Consequently, in order to overcome the current limitations in alkyne metathesis methodology, further... 

Zhang, Y Synchrotron Radiation Direct Photo Etching of Polymers. Vol. 168, pp. 291-340. Zheng, J. and Swager, T M. Poly(arylene ethynylene)s in Chemosensing and Biosensing. Vol. 177, pp. 151-177. 

Buntz et al. reported the synthesis of arylene-ethynylene type polymers from regioisomerically pure cyclobutadienecohalt derivatives. See (a) M. Altmann, U. H. F. Bunz, Macromol. Rapid. Commun., 15, 785 (1994). (h) M. Altmann, U. H. F. Bunz, Angew. Chem., Int. Ed Engl, 34, 569(1995). 

Another condensation of hl -diiodoferrocene with a series of dialkynes has led to the formation of a series of poly(arylene-ethynylene) type polymers. Bifunctional ferrocene-based tris(l-pyrazolyl)borates have been used to obtain a range of inorganic polymers with ferrocene in the backbone-—see... 

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