Conjugated polymers poly derivatives

The spectroscopic signatures of excited states of derivatives of the conjugated polymer poly (p-phenylene vinylene) have been widely investigated both... 

That detection limit was recently improved by Wang et al. [20]. The authors replaced the 16 mm vacuum-deposited CuPc-Ceo bilayer devices by 1 mm solution-processed polymer devices based on a 1 1 blend by weight of the conjugated polymer poly(3-hexylthiophene) (P3HT) and 6,6-phenyl-C6i-butyric acid methyl ester (PCBM), a soluble derivative of Ceo- The device has an active area of 1 mm and an external quantum efficiency of more than 50 % between 450 and 550 nm (Fig. 12). The device... 

We investigated the charge transport properties of the rc-conjugated polymer poly (para-phenylenevinylene) and its soluble substituted derivative DPOP-PPV (Fig. 1.2). In... 

The versatility of poly(phenylcne) chemistry can also be seen in that it constitutes a platform for the design of other conjugated polymers with aromatic building blocks. Thus, one can proceed from 1,4- to 1,3-, and 1,2-phenylene compounds, and the benzene block can also be replaced by other aromatic cores such as naphthalene or anthracene, helerocyclcs such as thiophene or pyridine as well as by their substituted or bridged derivatives. Conceptually, poly(pheny ene)s can also be regarded as the parent structure of a series of related polymers which arc obtained not by linking the phenylene units directly, but by incorporation of other conjugated, e.g. olefinic or acetylenic, moieties. 

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... 

Currem field characteristics measured wiih conjugated polymers sandwiched between an indium-tin oxide (ITO) anode and an aluminum cathode are usually hole dominated and are, consequently, appropriate for testing injection/lransport models for the case of unipolar current How. Data shown in Figure 12-1 refer to injection-limited currents recorded on typically 100 nm thick spin-coated films of derivatives of poly(y d/"fi-phenylenevinylene) (PPV) and a planarized poly(/ /" -pheny-leue) employing a Keilhley source measure unit. The polymers were ... 

A route to processible polyacetylene, devised initially using classical initiators (Scheme 1i) 576-578 has been developed using well-defined molybdenum initiators to prepare conjugated polymers.579-585 They have also been employed to prepare polyacetylene via the polymerization of cyclooctate-traene, COT,586 and by the isomerization of poly(benzvalene).587 588 Substituted, and hence soluble, polyacetylene derivatives may be synthesized by polymerizing monosubstituted COT substrates.589-591... 

J.-H. Lee, J.-W. Park, and S.-K. Choi, Synthesis and electroluminescent property of a new conjugated polymer based on carbazole derivative poly(3,6-lV-2-ethylhexyl carbazolyl cyanoter-ephthalidene), Synth. Met., 88 31-35, 1997. 

---