Platinum II polymers

The employment of diphenylphosphinopropanoic acid as a building block in the supramolecular assembly of a cyclometalated platinum(II) polymer 49 directed by -stacking and hydrogen-bonding interactions has been described [ 16g]. 

Table 1. Common materials used in quenched-fluorescence oxygen sensing (Ru(dpp)3(C104)2 tris(diphenylphenantroline) ruthenium(II) perchlorate PtOEPK platinum(II)-octaethyl-porphine-ketone PtPFPP platinum(II)-tetrakis(pentafluorophenyl)porphine PS.poly(styrene), PSu poly(sulfone) PSB poly(styrene-butadiene) block co-polymer PVC polyvinylchloride) APET amorphous poly(ethyleneterephthalate) PE poly(ethylene).

New approaches to catalyst recovery and reuse have considered the use of membrane systems permeable to reactants and products but not to catalysts (370). In an attempt to overcome the problem of inaccessibility of certain catalytic sites in supported polymers, some soluble rho-dium(I), platinum(II), and palladium(II) complexes with noncross-linked phosphinated polystyrene have been used for olefin hydrogenation. The catalysts were quantitatively recovered by membrane filtration or by precipitation with hexane, but they were no more active than supported... 

A similar mechanism almost certainly takes place on polymer-supported complexes. Indeed, some evidence has been put forward for the formation of some platinum(II) species when a styrene/divinylbenzene copolymer bearing dimethylamino groups is treated with chloroplatinic acid (75). 

Benzyl(trifluoroacetato) complexes, with platinum(II), 8, 470 Benzylzinc halides, with polymer-supported imines, 2, 398 Benzynes... 

Abstract Pressure-sensitive paint (PSP) is applied to the areodynamics measurement. PSP is optical sensor based on the luminescence of dye probe molecules quenching by oxygen gas. Many PSPs are composed of probe dye molecules, such as polycyclic aromatic hydrocarbons (pyrene, pyrene derivative etc.), transition metal complexes (ruthenium(II), osumium(II), iridium(III) etc.), and metalloporphyrins (platinum (II), palladium(II), etc.) immobilized in oxygen permeable polymer (silicone, polystyrene, fluorinated polymer, cellulose derivative, etc.) film. Dye probe molecules adsorbed layer based PSPs such as pyrene derivative and porphyrins directly adsorbed onto anodic oxidised aluminium plat substrate also developed. In this section the properties of various oxygen permeable polymer for matrix and various dye probes for PSP are described. 

Palladium(II)- and platinum(II)-containing polymers assembled by diisocyanide ligands are generally not luminescent.37 Because photoinduced labili-zation of the ligand in M C=N—R systems is possible, absence of luminescence can occur when this photochemical process happens, and consequently the light energy is wasted. As a result, luminescence is often not observed at room temperature in solution for such coordination polymers. Occasionally, only weak emissions at low temperature in the solid state can be detected. 

FIGURE 3. Chemical structures of platinum(II) polyyne polymers 1—75. 

Copolymers with silanes have attracted much interest. These include a range of methacrylic acid copolymers with disilanes, secondary silanes, phenylsi-lane and fumarate terminated poly(dimethylsiloxanes). A platinum(II) bis(a-cetylacetonato) catalyst has been found to be highly effective for enhancing the activities of hydride and vinyl polymer end groups in step polymerisation reactions. ... 

In this review, the synthesis, properties, and applications in optoelectronic fields of polyfluorenes with on-chain metal centers have been briefly summarized. Metal complexes involving iridium(III), platinum(II), europium(III), rhenium(I), and ruthenium(II) complex coupled with polyfluorene are surveyed. Efficient energy transfer from polymer main-chain to metal-centers can occur in these host-guest systems. These kinds of novel polymers are usually applied in the fields of phosphorescent OLEDs, memory devices, and sensors. In particular, the realization of efficient energy transfer and phosphorescence offers a huge potential for future optoelectronic devices based on these kinds of materials. 

The development of nanocomposites containing metal particles may be very rewarding since such materials can be useful in catalysts, an optical and electronic devices. Figure 16.18 shows the schematic diagram of the method of synthesis. The polymers used in this material were poly(4-methyl-l-pentene) and poly(te-trafluoroethylene). Dimethyl(cyclooctadiene)platinum(II) was used as the metal precursor. The metal precursor was dissolved in supercritical liquid carbon dioxide... 

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