Molecular phenylene bridge

We selected two types of molecular wires to form desired structures for the electrode. The first has a linear structure with a bis-terpyridine moiety (Lp azobenzene-bridged bis-terpyridine ligand, L2 phenylene-bridged bis-terpyridine ligand), as illustrated in Figure 2. This type of wire can form a linear structure such as a bead curtain. The second has a triangular structure with three terpyridine... 

Of special significance in the development of PMO materials was the synthesis of porous materials with crystalline order of the bridged silsesquioxane inside the framework walls, initially achieved through the use of tt-tt interactions between 1,4-phenylene-bridged silsesquioxane precursors.33 Molecular scale periodicity in... 

Camarota, B. Mann, S. Onida, B. Garrone, E., Heirarchical Self-Assembly in Molecularly Ordered Phenylene-Bridged Mesoporous Organosilica Nanofilaments. ChemPhysChem 2007,8, 2363-2366. 

In photosynthetic bacteria, the key functional unit is composed of a bacteriochlorophyll-a dimer in a slipped-cofacial orientation rendered by coordination of imidazolyl residue to the central magnesium ion. Inspired by this topology, dimer 11 was synthesized by Kobuke and Miyaji already in 1994 [58]. Recently, two imidazolyl-functionalized zinc porpyrins have been connected by a meta-phenylene bridge to obtain the supramolec-ular assembly 18, which incorporates 12 porphyrin dyes [68]. Although several oligomeric species of large molecular weight were formed initially... 

FIGURE 1.2. Molecular structure of widely used it-conjugated and other polymers (a) poly(para-phenylene vinylene) (PPV) (b) a (solid line along backbone) and it ( clouds above and below the a line) electron probability densities in PPV (c) poly(2-methoxy-5-(2 -ethyl)-hexoxy-l,4-phenylene vinylene) (MEH-PPV) (d) polyaniline (PANI) (d.l) leucoemeraldine base (LEB), (d.2) emeraldine base (EB), (d.3) pernigraniline base (PNB) (e) poly(3,4-ethylene dioxy-2,4-thiophene)-polystyrene sulfonate (PEDOT-PSS) (f) poly(IV-vinyl carbazole) (PVK) (g) poly(methyl methacrylate) (PMMA) (h) methyl-bridged ladder-type poly(jf-phenylene) (m-LPPP) (i) poly(3-alkyl thiophenes) (P3ATs) (j) polyfluorenes (PFOs) (k) diphenyl-substituted frares -polyacetylenes (f-(CH)x) or poly (diphenyl acetylene) (PDPA). 

Fig. 9.19 Chemical structures of oxetane-functionalized emitters (a) low molecular weight pyrene-based emitter [46], (b) poly(fluorene-phenylene) copolymer [47], (c) spirobifluorene-cofluorene RGB emitter polymers [48], and (d) fluorene-bridged co-oligomers [50],...

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