Phenyl substituted polythiophenes

M.R. Andersson, W. Mammo, T. Olinga, M. Svensson, M. Theander, andO. Inganas, Synthesis of regioregular phenyl substituted polythiophenes with FeCl3, Synth. Met., 101 11-12, 1999. 

A. Ruseckas, E.B. Namadas, T. Ganguly, M. Theander, M. Svensson, M.R. Andersson, O. Inganas, and V. Sundstrom, Intra- and interchain luminescence in amorphous and semicrystalline films of phenyl-substituted polythiophene, J. Phys. Chem. B, 105 7624-7631, 2001. 

M. Berggren, G. Gustaffson, O. Inganas, M.R. Andersson, O. Wennerstrom, and T. Hjertberg, Thermal control of near-infrared and visible electroluminescence in alkyl-phenyl substituted polythiophenes, Appl. Phys. Lett., 65 1489-1491, 1994. 

Ruseckas, A., et al. 2001. Intra- and interchain luminescence in amorphous and semicrystalline films of phenyl-substituted polythiophene. J Phys Chem B 105 7624. 

Example 9.15 Synthesis of Regioregidar Phenyl-Substituted Polythiophenes with... 

Andersson MR, Mammo W, Olinga T, Svemsson M, Theander M, Inganas O (1999) Synthesis of regio-regular phenyl substituted polythiophenes with EeC13. Synthetic Met 101 11-12... 

A third, non-catalytic approach to regioregular polythiophenes relies on the discovery by Andersson and co-workers that the oxidation of some monomers can be controlled giving high coupling selectivities. For example, phenyl-substituted thiophene monomers can be regiospecifically polymerized by a slow addition of FeCH that maintains a low concentration of radical throughout the reaction. Yields approaching 80 %... 

Polythiophene (PT) is attractive in that it is stable in air, and when some of the hydrogens are substituted by alkyl or phenyl groups, it is soluble in most organic solvents <1986SM(15)169>. 

Functionalization of polythiophenes with aryl groups has attracted much interest because aryl terminals can be further functionalized. A series of 3-phenyl- and 4-phenylthiophene substituted on the phenyl ring with donor or acceptor groups has been electropolymerized [208] in order to tune the potentials for p and n doping. Monomer oxidation potential and polymer redox potentials were found to follow a linear Hammett correlation. 

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