Regioregularity poly

The microstructure and architecture of polymers can also gready influence die properties of die polymers. For example, poly(3-substituted thiophene)s could have three microstructure joints s-trans (head to tail), s-trans (head to head), and s-cis (head to tail) (Fig. 9.3). The regioregular head-to-tail poly(3-substituted thiophene)s exhibit higher electrical conductivity values and higher... 

Bao, Z. Dodabalapur, A. Lovinger, A. 1996. Soluble and processable regioregular poly (3-hexylthiophene) for thin film field-effect transistor applications with high mobility. Appl. Phys. Lett. 69 4108 1110. 

Kobashi, M. Takeuchi, H. 1998. Inhomogeneity of spin-coated and cast non-regioregular poly(3-hexylthiophene) films. Structures and electrical and photophysical properties. Macromolecules 31 7273-7278. 

McCullough Method of Preparation of Regioregular HT Poly(3-Alkylthiophenes) (Chart 2.162)... 

Ni-Catalyzed preparation of regioregular HT poly(3-alkylthiophenes) (HT-388) from 2,5-dibromoalkylthiophenes (389) and Rieke zinc (Zn ) (Chart 2.164). 

H. Liang, J. Yan, and J. Lu, Synthesis and optical characterization of a novel blue luminescent polymer regioregular poly(l-alkoxy-2,4 -m-phenylene vinylene), Synth. Met., 142 143-145, 2004. 

S. Amou, O. Haba, K. Shirato, T. Hayakawa, M. Ueda, K. Takeuchi, and M. Asai, Head-to-tail regioregularity of poly(3-hexylthiophene) in oxidative coupling polymerization with FeCl3, J. Polym. Sci., Part A Polym. Chem., 37 1943-1948, 1999. 

R.S. Loewe, S.M. Khersonsky, and R.D. McCullough, A simple method to prepare head-to-tail coupled, regioregular poly(3-alkylthiophenes) using Grignard metathesis, Adv. Mater., 11 250-253, 1999. 

R.S. Loewe, P.C. Ewbank, J. Liu, L. Zhai, and R.D. McCullough, Regioregular, head-to-tail coupled poly(3-alkylthiophenes) made easy but the GRIM method investigation of the reaction and the origin of regioselectivity, Macromolecules, 34 4324-4333, 2001. 

S. Guillerez and G. Bidan, New convenient synthesis of highly regioregular poly(3-octylthiophene) based on the Suzuki coupling reaction, Synth. Met., 93 123-126, 1998. 

T.A. Chen and R.D. Rieke, The first regioregular head-to-tail poly(3-hexylthiophene-2,5-diyl) and a regiorandom isopolymer nickel versus palladium catalysis of 2(5)-bromo-5(2)- (bromozincio)-3-hexylthiophene polymerization, J. Am. Chem. Soc., 114 10087-10088, 1992. 

A. Bolognesi, W. Porzio, G. Bajo, G. Zannoni, and L. Fanning, Highly regioregular poly (3-alkylthiophenes) a new synthetic route and characterization of the resulting polymers, Acta Polym., 50 151-155, 1999. 

P. Barta, F. Cacialli, R.H. Friend, and M. Zagorska, Efficient photo- and electroluminescence of regioregular poly(alkylthiophene)s, J. Appl. Phys., 84 6279-6284, 1998. 

P. Barta, P. Dannetun, S. Stafstrom, M. Zagorska, and A. Pron, Temperature evolution of the electronic band structure of the undoped and doped regioregular analog of poly(3-alkylthio-phenes) a spectroscopic and theoretical study, J. Chem. Phys., 100 1731-1741, 1994. 

M.J. Marsella, D.-K. Fu, and T.M. Swager, Synthesis of regioregular poly(methyl pyridinium vinylene) an isoelectric analogue to poly(phenylene vinylene), Adv. Mater., 7 145-147, 1995. 

Y. Zhu, M.M. Alam, and S.A. Jenekhe, Regioregular head-to-tail poly(4-alkylquinoline)s synthesis, characterization, self-organization, photophysics, and electroluminescence of new n-type conjugated polymers, Macromolecules, 36 8958-8968, 2003. 

S Nagamatsu, W Takashima, K Kaneto, Y Yoshida, N Tanigaki, K Yase, and K Omote, Backbone arrangement in friction-transferred regioregular poly(3-alkylthiophene)s, Macro molecules, 36 5252-5257, 2003. 

Poly(l,4-benzamide) (PBA), 13 371 Poly(1-butene) (PB), 4 429. See also Blown PB film Isotactic PB resins Isotactic poly(l- butene) (PB) PB entries Pipe-grade PB resin Syndiotactic poly(1-butene) (PB) mechanical properties of, 20 418 polymerization processes for, 20 424-425 uses of, 20 430-431 commercial manufacture of, 20 429 Poly-1-olefins, regioregular, 26 513 Poly(l,4-butylene terephthalate) (PBT), 10 188... 

Fig. 3 Regioregular poly [3-(2-methyl-1 -butoxy)-4-methylthiophene] (PMBMT) synthesized via oxidative electropolymerization...

Mozer AJ, 8ariciftci N8, Pivrikas A, Osterbacka R, Juska G, Brassat L, Bassler H (2005) Charge carrier mobility in regioregular poly(3-hexylthiophene) probed by transient conductivity techniques a comparative study. Phys Rev B 71 035214... 

Transition metal-catalyzed polymerizations have been reported to give high-purity, regioregular poly-3-alkylthio-phenes suitable for use in electronic devices. Thus, the Negishi protocol using a nickel catalyst and Rieke zinc was employed for the polymerization of 63 to produce the product as a low molecular weight polymer <2003CC2548>. 

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