Properties of Conjugated Polymers

There have been numerous studies of the electrical and emission properties of conjugated polymer-, small molecule-, and molecularly doped polymer-based OLEDs. The current-voltage and radiance-voltage characteristics have been nica sured as a function of thickness of the organic layer, temperature, different metal electrodes, etc. in an attempt to understand the device physics. A major factor in hibiting progress is the purity of the organic impurities that are incorporated dur-... 

Several attempts to use otganic polymeric semiconductors as the active component in photovoltaic devices have been reported during the last two decades. Interest in the photovoltaic properties of conjugated polymers like polyacelylcne, various derivatives of polythiophenes and poly(para-phenylene vinylene)s arose from... 

D. Baeriswyl in Electronic Properties of Conjugated Polymers III (Eds. H. Kuzmany, M. Mcli-ring. S. Roth). Springer. Beilin. 1989. p. 54. 

The flexibility of the substrate, the ease, and the low costs of fabrication of this DFB-polynter laser offer a very promising way to novel surface-emitting laser devices which take full advantage of the properties of conjugated polymers. 

Electrochemical properties of conjugated polymers. Springer, Berlin Heidelberg New York, p 385... 

Wessling B (1987) in Kuzmany H, Mehring M, Roths (eds) Electronic properties of conjugated polymers. Springer, Berlin Heidelberg New York, p 407... 

Epstein, AJ, and MacDiarmid, AG (1989) in Kuzmany, H, Mehring, M, and Roth, S, eds. Electronic Properties of Conjugated Polymer, Springer Verlag, Berlin, 1989, p 384. 

R Kiebooms, R Menon, and K Lee, Synthesis, electrical, and optical properties of conjugated polymers, in Handbook of Advanced Electronic and Photonic Materials and Devices, FLS. Nalwa, Ed., Academic Press, New York, 2001, pp. 1-102. 

The optical properties of conjugated polymers primarily arise from the 7t-bonds in the polymer backbone. Alignment of 7i-bonds leads to electron delocalization, also referred to as conjugation or -conjugation. Theoretically, backbone 7i-electrons can be delocalized along the entire length of the polymer if the 7i-bonds are all aligned however, twists in the backbone and defects in the polymer structure at... 

Barford, W. 2005. Electronic Properties of Conjugated Polymers. Oxford University Press, Oxford. Blythe, T. and Bloor, D. 2005. Electrical Properties of Polymers. Cambridge University Press, Cambridge. Chiellini, E., Gil, H., Braunegg, G., Buchert, J., Gatenholm, P., and vander Aee, M. 2001. Biorelated Polymers. Kluwer, New York. 

Van der Horst JW, Bobbert PA, Michels MAJ, Bassler H (2001) Calculation of excitonic properties of conjugated polymers using the Bethe-Salpeter equation. J Chem Phys 114 6950... 

Of much interest are the electroluminescence properties of conjugated polymers that allow the development of electrically switched light-emitting devices [8.257]. Electric field activated bistable molecules are expected to switch at a critical field strength [8.258]. 

R. L. Elsenbaumer and co-workers, in J. Kuzmany, M. Mehring, and S. Roth, eds., Electronic Properties of Conjugated Polymers, Springer-Verlag, Berlin, 1987, p. 400. 

The geometrical structures of several common conjugated polymers are shown in Fig. 4.1, where the necessary (but not sufficient) condition for conjugation, the alternation of the single and double bonds along the polymer backbone, can be seen. The unique electronic properties of conjugated polymers derive from the presence of -electrons, the wavefunctions of which are delocalized over long portions of (if not the entire) polymer chain, when the molecular structure of the... 

The materials properties of conjugated polymers have improved significantly over the last five years, especially because of major developments in controlled synthesis and processing technology12 13. Recent overviews of the general state-of-the-art can be found in the... 

Below, the one-dimensional band structure of simple linear conjugated polymers is outlined, followed by a brief description of the use of some model 7t-conjugated molecules for conjugated polymers. Then, to close out the chapter, the description of the properties of conjugated polymers is extended to issues of optical absorption and photo-luminescence. 

S. Abe, Excitonic Effects in the Linear and Nonlinear Optical Properties of Conjugated Polymers, in N. S. Sariciftci (Ed.), Primary Photoexcitations in Conjugated Polymers, World Scientific, Singapore, 1997, p. 115. 

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