Introduction to Earthquake Engineering, 2nd Edition - download pdf or read online

By Professor Shunzo Okamoto

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This is interpreted as selective oxidative addition of Ni to the less sterically hindered 5-position on the alkylthiophene farthest from the bulky alkyl group. 4K and weight average molecular weight (Mw) index (PDI) = 4). The M , measured by GPC (CHCI3) was reported to be 52K. 2 FeCI, method for the polymerization of PATs Yoshino and Sugimoto [26] reported in 1986 a very simple method to prepare PATs (Scheme 4). The monomer, 3-alkylthiophene (8), is dissolved in chloroform and oxidatively polymerized with FeC13 [26], MoClS, or RuC13 [30].

5 (Scheme 11). It has also been shown recently by LeClerc [ 1031that the preparation of poly(3-alkoxy-4-methylthiophenes) by FeC13coupling can lead to highly regioregular materials (Scheme 11). This may be due to an asymmetric reactivity of the oxidized monomers. 8 Random copolymers of alkyl thiophenes Random copolymers of 3-octylthiophene and 3-methylthiophene were prepared electrochemically and upon doping these copolymers were more thermally stable than the homopolymers [104]. 9 Head-to-tail coupled, random copolymers of alkyl thiophenes Regioregular HT-random copolymers of PAT have been prepared [ 1051.

9) are equipped to either recognize molecules or ions and therefore transduce molecular interactions into a measurable response ether ionochromatically, votammetrically, through fluorescent responses, and both iono- and chemoresistive responses [151-1531. The PT 69 exhibits a chemoresistiveresponse to paraquat derivatives and forms a pseudorotaxane upon binding. A flow cell experiment indicated that the PT is 'reset' after 2 min in a unoptimized demonstration of a real-time sensory device [152].

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