It-conjugated polymers

Optically detected magnetic resonance (ODMR) studies of -iT-conjugated polymer-based hght emitting diodes (LEDs) J. Shinar Organic Electroluminescent Materials and Devices, S. Miyata and H.S. Nalwa, Eds., Gordon and Breach, Amsterdam, pp.177-202... 

It is important to clarify whether catalyst-transfer condensation polymerization is specific to polythiophene, or whether it is generally applicable to the synthesis of well-defined it-conjugated polymers. We investigated the synthesis of poly(p-phenylene), to see whether a monomer 28 containing no heteroatom in the aromatic ring would undergo catalyst-transfer polymerization. However, all polymers obtained in the polymerization with Ni(dppp)Cl2, Ni(dppe)Cl2, or Ni(dppf)Cl2 possessed low molecular weights and broad polydispersities. Nevertheless, we found that LiCl was necessary for opti-... 

Scheme 1 Synthesis of it -conjugated polymer incorporated with rhenium(I) 2,2 -bipyridine units. The values ofx and y varied from 0 to 0.5 and 1 to 0.5, respectively...

Intrinsically conducting polymers are a broad class of (often) processable materials based upon doped -it conjugated polymers. Their conductivities vary from that of insultators through to that of semiconductors and even good metals. A wide variety of electronic phenomena are observed. Because of the broad choice of materials and properties, this class of polymer is potentially of use in a large number of technologies. 

Since the pioneering studies on OLEDs using small molecules and polymers [1, 2], both small molecules and polymers have been studied for use as materials in OLEDs. Small organic molecules that readily form stable amorphous glasses above room temperature, i. e., amorphous molecular materials [3], and polymers containing it-electron systems in the main chain, i.e., it-conjugated polymers, have been proven to be promising candidates for materials for OLEDs. 

A. Moliton and R. C. Hioms, Review of electronic and optical properties of semiconducting it-conjugated polymers applications in optoelectronics, Polym. Int, 53, 1397-1412 (2004). 

In material science, the characterization of molecular structure is of utmost importance. Focusing on, say, it-conjugated polymers, which consist of a backbone with alternating single and double bonds, it proves valuable to... 

Abstract The chapter describes the most important fluorescence studies of polymer systems. It maps the progress in the study of polymer conformations, dynamics, self-assembly, and other properties of polymer systems by different fluorescence methods from the historical perspective. It offers the selection of seminal studies by pioneers of polymer fluorescence (as representative as possible), papers that significantly contributed to the solution of important problems, and also the up-to-date studies that follow the world trends of polymer research. Great attention is given to studies of dynamic processes. The end of the chapter addresses the opto-electroactive jt-conjugated polymers. This topic exceeds the scope of the chapter and only some aspects of the fluorescence of it-conjugated polymers are reviewed. Special attention is devoted to the application of single-molecule fluorescence spectroscopy in the research of opto-electroactive polymers. 

Rubatat, L., Kong, X., Jenekhe, S.A. et al. (2008) Self-assembly of polypeptide/it-conjugated polymer/polypeptide triblock copolymers in rod-rod-iod and coil-iod-coil conformations. Macromolecules, 41,1846-1852. 

Yamamoto T, Shimizu T (1997) New it-conjugated polymers containing tetrathiafulvalene as the monomeric unit. J Mater Chem 7 1967-1968... 

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