Giant brains, or Machines that think by Edmund C. Berkeley, Illustrated

By Edmund C. Berkeley, Illustrated

The topic of this publication is a kind of laptop that comes toward being a mind that thinks than any laptop ever did ahead of 1940. those new machines are known as occasionally mechanical brains and occasionally sequence-controlled calculators and occasionally through different names. basically, notwithstanding, they're machines which could deal with details with nice ability and nice pace. And that strength is especially just like the ability of a mind.

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Schopf and G. ~L--C. ~---SiMe3 Spiro-fused thiophene trimer (a) and spiro-fused thiophene heptamer (see also Sect. 1) (b) [28, 29] Polythiophenes ElectricallyConductive Polymers S ~ ~ 31 S S S n S -- -- n n Polymers of dithieno[3,4-b;3',4'-d]thiophene [4, 3~32] Poly(phenanthro[9,10-c]thiophene-2,11-diylidyne) (see also Sect. 3) [-33] Poly(naptho [2,3-c]thiophene-2,9-diyl-2,2'-bithiophene-5,5'-diyl) [-34] Poly(thieno [3,4-c] thiophene-2,6-diylidynemet hylidene-2,2'-bithiophene- 5,5'diylmethylidene) [-35] R R Polymers of 4,4-dialkylcyclopenta[-2,1-b;3,4-b']bithiophene n = 1, 3, 4, 6, 8, 16) [,11, 36, 37] s} (o) (R=CnH2n+I, 5 (b) Polymers of 4-(1,3-dithiol-2-ylidene)-4H-cyclopenta[2,1-b;3,4-b']bithiophene (a) and of 7-(1,3-dithiol-2-ylidene)-TH-cyclopenta[1,2-b;3,4-b']bithiophene (b) [38] 32 G.

Schopf and G. KoBmehl Table 6. Continued Key words Section in this review Ref. 7 524, 681 577 70 146, 148 615 524 340, 495 333 Contin. Polythiophenes 21 Electrically Conductive Polymers Table 6. Continued Key words Section in this review Ref. 1 89 Poly(3',4'-dihexyl-2,2';5',2"-terthiophene) Poly(4,4"-dipentoxy-2,2';5',2"-terthiophene) Poly(3,3"-dipentoxy-2,2';5',2"-terthiophene) Poly(2,2';5',2"; 5",2'"-tetrathiophene-5,5'"-diyl) Poly(tetrathiophene) ~N Poly(3,3 '"-dimethyl-2,2';5',2"; 5",2" '-tetrathiophene) Table 7.

The dibutoxy substitution yields advantages in processing, as the high molecular weight polymer dissolves easily in common organic solvents [106, 107]. 3 Poly(thiophene)s with Pendant Reactive Groups 3-Methylthiophene and 3-butylthiophene can be electrocopolymerized with 3-thienylacetic acid and its methyl ester [108-110] (cf. Table 8). The COOH group is covalently bound to the copolymer structure: the carboxylic group does not take part in the electrochemical reaction. The dimerization tendency of carboxylic acids is possibly reduced by the electrolytic conditions (cf.

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