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Ladder types

U. Scherf, in Handbook of Conducting Polymers, 2nd edn, (Eds. T. Skolhcim, J.R. Reynolds), Marcel Dekkcr, New York 1997, Chapter 14 (Conjugated Ladder-Type Structures), p. 363. [Pg.142]

Figure 9-1. Materials overview a few sclcclcd conjugated polymers and Ihcir properties have been compiled and ihe following abbreviations arc used DO-PPP...Poly(2-decyloxy-l,4-phcnylcnc), EHO-PPP...Poly(2-(2 -elhylliexyloxy)-l,4-phcnylenc), CN-PPP... Poly(2-(6 -cyano-6 -incthyl-licplyloxy)-l,4-phcnylene), m-LPPP... methyl-substituted ladder-type Poly( 1,4-phenylcne), and PLQY=phololuinincs-ecncc quanluni yield. Figure 9-1. Materials overview a few sclcclcd conjugated polymers and Ihcir properties have been compiled and ihe following abbreviations arc used DO-PPP...Poly(2-decyloxy-l,4-phcnylcnc), EHO-PPP...Poly(2-(2 -elhylliexyloxy)-l,4-phcnylenc), CN-PPP... Poly(2-(6 -cyano-6 -incthyl-licplyloxy)-l,4-phcnylene), m-LPPP... methyl-substituted ladder-type Poly( 1,4-phenylcne), and PLQY=phololuinincs-ecncc quanluni yield.
Figure 10-6. Chemical structure of the ladder-type poly(/xi/u-pheny-Icne). X represents u methyl-group and R and R are /i-hcxyl aud 1,4-dccylphcnyl, respectively. Figure 10-6. Chemical structure of the ladder-type poly(/xi/u-pheny-Icne). X represents u methyl-group and R and R are /i-hcxyl aud 1,4-dccylphcnyl, respectively.
S. Tasch, A. Niko, G. Leising, U. Scherf, Highly efficient electroluminescence of new wide band gap ladder-type poly(para-phenylenes), AppL Phys. Lett. 1996, 68, 1090. [Pg.178]

Figure 9-2. Based on ihe conjugated backbone of a /H/ra-phenylcne the most common principle structures of conjugated molecules am described (a) the pure backbone (b) a backbone with attached side-groups R and R (e) a ladder type-eonjugaled backbone (d) and (c) represent different types of copolymers. where (d) represents a side cliain-gnill copolymer and (c) a single eliain-bloek copolymer. Figure 9-2. Based on ihe conjugated backbone of a /H/ra-phenylcne the most common principle structures of conjugated molecules am described (a) the pure backbone (b) a backbone with attached side-groups R and R (e) a ladder type-eonjugaled backbone (d) and (c) represent different types of copolymers. where (d) represents a side cliain-gnill copolymer and (c) a single eliain-bloek copolymer.
LPPP ladder type soluble polyf/xiru-phcnylcnc)... [Pg.490]

W. Graupner, G. Ccrullo, M. Lanzatti, M. Nisoli, E.J. W. List, G. Leising, S. De Silvcstri, Direct observation of ultrafast field-induced charge generation in ladder-type poly(para-phenylene). Phys. Rev. Lett. 1998, 81. 3259. [Pg.491]

Fahnenstich U., Koch K. H., Pollmann M., Scherf U., Wagner M., Wegener S., Muellen K. Design of Novel Strnctnrally Defined Ladder-Type Polymers Makro-mol. Chem., Macromol. Symp. 1992 54/55 465—476... [Pg.321]

Ladder-Type Oligo- and Poly(para-phenylene)s.177... [Pg.164]

Ladder-Type Poly(para-phenylene-czs-vinylene)s.216... [Pg.164]

Ladder-Type Poly(pflra-phenylene-cis-vinylene)s... [Pg.216]

In 1993, Scherf and Chmil described the first synthesis of a ladder-type poly(pflra-phenylene-czs-vinylene) (116) [138]. On the one hand, ladder polymer 116 represents, a planar poly(phenylene) containing additional vinylene bridges on the other hand, it is a poly(phenylenevinylene) with aryl-aryl linkages in the polymeric main chain. The target macromolecules, as fully aromatic ladder polymers, are composed of all-carbon six-membered rings in the double-stranded main chain (an example of angularly annelated poly(acene)s). [Pg.216]

Fig. 11 Ladder-type architecture formed by self-assembly of a tridentate module (I ) with a bidentate module (1,4-DITFB)... Fig. 11 Ladder-type architecture formed by self-assembly of a tridentate module (I ) with a bidentate module (1,4-DITFB)...
Schliiter et al. have isolated the beltene derivative 20, which was developed as byproduct when synthesizing the ladder-type polymer 21 by a repeated Diels-Alder reaction (Fig. 11). The monomer 19 can act both as diene and as dienophil [41]. The iterative Diels-Alder method is however limited by the decreasing solubility of the products of higher molecular masses. [Pg.21]

Polarized luminescence from oriented molecular materials 1999 Ladder-type materials 1999 Electroluminescence in organics... [Pg.49]

As the next step in this way, Mullen and coworkers [608] have reported PPP-type polymers 512, containing planar pentaphenylene blocks. As expected, the emission maximum (Apl = 445 nm) of 512 was found between those of indenofluorene 510 (432-434 nm) and completely planar ladder-type PPP (450 nm) (see Section 2.5.2) [608]. Single-layer PLEDs ITO/PEDOT/512b/Ca/Al showed stable pure-blue emission with brightness in excess of 200cd/m2 (at 7 V) (Chart 2.121). [Pg.221]

SCHEME 2.74 Synthesis of ladder-type polycarbazole 557. (From Patil, S.A., Scherf, U., and Kadaschuk, A., Adv. Fund. Mater., 13, 609, 2003.)... [Pg.232]

See other pages where Ladder types is mentioned: [Pg.154]    [Pg.35]    [Pg.366]    [Pg.40]    [Pg.144]    [Pg.148]    [Pg.171]    [Pg.214]    [Pg.458]    [Pg.465]    [Pg.465]    [Pg.465]    [Pg.483]    [Pg.181]    [Pg.217]    [Pg.217]    [Pg.479]    [Pg.1218]    [Pg.370]    [Pg.27]    [Pg.125]    [Pg.8]    [Pg.397]    [Pg.56]    [Pg.314]    [Pg.7]    [Pg.49]    [Pg.222]    [Pg.222]    [Pg.223]    [Pg.244]   
See also in sourсe #XX -- [ Pg.134 ]



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