Four donor–acceptor type conducting polymers, namely poly(2,3-bis(4-decyloxy)phenyl)5,8-bis(4-thiophen-2-yl)pyrido[4,3-b]pyrazine) (P1), poly(2,3-bis(4-decyloxy)phenyl)-5,8bis(4-butylthiophen-2-yl)pyrido[4,3-b]pyrazine) (P2), poly(2,3-bis(4-(decyloxy)phenyl)-5,8bis(4-hexyloxythiophen-2-yl)pyrido[4,3-b]pyrazine) (P3) and poly(2,3-bis(4-(decyloxy)phenyl)-5,8bis(2,3-dihydrothieno[3,4-b][1,4]dioxin...

Binding of RecA to poly(dG-m5dC) and poly(dG-dC) under B- and Z-form conditions was studied using circular dichroism (CD) and linear dichroism (LD). LD revealed a quantitative binding of RecA to Mg2+-induced Z-form poly(dG-m5dC) with a stoichiometry of 3.1 base pairs/RecA monomer, which is slightly larger than the 2.7 base pairs observed for the B-form. The LD spectra indicate a preferentially ...

INTRODUCTION With the development of living cationic polymerization of isobutylene (IB)1 and styrenic monomers,2–5 the synthesis of ABA triblock copolymer thermoplastic elastomers (TPEs) with polyisobutylene (PIB) as rubbery middle segments and styrenic polymers as plastic outer segments became possible. TPEs with PIB rubbery segments inherently exhibit superior oxidative, chemical and thermal ...


 In this paper, the generalized Laguerre-Apostol-Frobenius-type poly-Genocchi polyno- mials of higher order with parameters a, b and c are defined using concept polylogarithm, Laguerre, Apostol Frobenius polynomials. These polynomials possess numerous properties including recurrence relations, explicit formulas certain differential identity. Moreover, some connections these poly- nomials ...

Polyamide-6 (PA6) submicron-sized spheres are prepared by two steps: (1) anionic ring-opening polymerization of ε-caprolactam in the presence of poly(ethylene glycol)-block-poly-(propylene glycol)-block-poly(ethylene glycol)(PEG-b-PPG-b-PEG) and (2) separation of PA6 spheres by dissolving PEG-b-PPG-b-PEG from the prepared blends. The PA6 microspheres obtained are regular spherical, with diamete...

poly methyl methacrylate (pmma) is the most common material used in prosthodontics. several studies indicate a breakdown of the number of very high resin bases after 2 to 3 years to avoid breaking bass and several attempts have been made, such as altering the chemical structure of resin by adding causes cross linking or copolymerization. the innovative method for improving the physical properti...

Herein, we have reported a para -fluoro thiol click reaction allowing control of the microphase separation and dielectric properties poly(pentafluorostyrene- b -acrylic acid) copolymers.