Electropolymerized Films of Macromeric Assemblies

Kajita, Taketoshi; Leasure, Robert M.; Devenney, Martin; Friesen, Duane A.; Meyer, Thomas J.

doi:10.1021/ic971279w

Cited by 17 publications

(14 citation statements)

References 45 publications

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“…95 In order to achieve better control over the polymerization, amide-linked polymers were synthesized by living anionic polymerization later on (Scheme 8). [101][102][103][104] Trimethylsilylprotected (aminoethyl)styrene was polymerized using sec-BuLi Fig. 8 Structure change of PNIPAM-Ru at the LCST by phase transition.…”

Section: Macromolecules Containing Pyridine-based Ru(ii)/os(ii) Compl...mentioning

confidence: 99%

Photogenerated avenues in macromolecules containing Re(i), Ru(ii), Os(ii), and Ir(iii) metal complexes of pyridine-based ligands

et al. 2012

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Pyridine-based ligands, such as 2,2'-bipyridine and 1,10-phenanthroline, have gained much interest in the fields of supramolecular chemistry as well as materials science. The appealing optoelectronic properties of their complexes with heavy d(6) transition metal ions, such as Ru(ii), Os(II), Re(I) and Ir(III), primarily based on the metal-to-ligand charge-transfer (MLCT) nature featuring access to charge-separated states, have provided the starting point for many studies in the field of dye-sensitized solar cells (DSSCs), organic light emitting diodes (OLEDs), artificial photosynthesis and photogenerated electron as well as energy transfer processes. This critical review provides a comprehensive survey over central advances in the field of soluble metal-containing macromolecules in the last few decades. The synthesis and properties of functionalized 2,2'-bipyridyine- and 1,10-phenanthroline-based d(6) metal complexes, in particular, their introduction into different prevailing polymeric structures are highlighted. In the most part of the review metal complexes which have been attached as pendant groups on the polymer side chain are covered. Selected applications of the herein discussed metal-containing macromolecules are addressed, particularly, with respect to photogenerated electron/energy transfer processes. In order to enable a deeper understanding of the properties of the ligands and metal complexes, the fundamentals of selected photophysical processes will be discussed (223 references).

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Section: Macromolecules Containing Pyridine-based Ru(ii)/os(ii) Compl...mentioning

confidence: 99%

Photogenerated avenues in macromolecules containing Re(i), Ru(ii), Os(ii), and Ir(iii) metal complexes of pyridine-based ligands

et al. 2012

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“…The incorporation of metal binding sites into polymers can be achieved either along the polymer main chain [1][2][3][4] or as side group functionalities. [5][6][7][8] A large number of coordination polymers with oxygen, sulfur, and nitrogen containing anchoring ligands and polymer-metal complexes have been described. For example, the b-dicarbonyl compounds have high affinity towards metal and metal ions, 9 and they are commonly involved in hydrogen-bonding motifs, 10 synthetic basis for a large number of technically important dyestuffs, 11 etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a biodegradable polymer prepared viaradical copolymerization of 2-(acetoacetoxy)ethyl methacrylate and molecular oxygen

et al. 2012

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“…The other is to identify RC models for which the redox separation efficiency is greater than 35%. Finally, there are well established routes for immobilizing these polystyrene-based polymer assemblies on conducting supports (56,57) or in sol-gel matrices (58, 59) for possible device applications. .…”

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Mimicking the antenna-electron transfer properties of photosynthesis

Sýkora

Maxwell

DeSimone

et al. 2000

Proc. Natl. Acad. Sci. U.S.A.

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A molecular assembly based on derivatized polystyrene is described, which mimics both the light-harvesting and energy-conversion steps of photosynthesis. The system is unique in that the two key parts of a photosynthetic system are incorporated in a functional assembly constructed from polypyridine complexes of Ru II . This system is truly artificial, as none of the components used in construction of the assembly are present in a natural photosynthetic system. Quantitative evaluation of the energy and electron transfer dynamics after transient irradiation by visible light offers important insights into the mechanisms of energy transport and electron transfer that lead to photosynthetic light-to-chemical energy conversion. In natural photosynthesis, light is converted into chemical energy by a sequence of coupled energy and electron transfer events. Initially, sunlight is absorbed by light-harvesting pigments, chlorophylls and carotenoids, which act as antenna fragments. The energy collected by absorption creates molecular excited states and is subsequently transferred between chromophores through an energy cascade ultimately reaching the reaction center. At the reaction center, the light energy is converted into chemical energy by a series of electron transfer steps (1-5). Understanding of these concepts has motivated chemists to design assemblies that have related properties and may provide the basis for artificial solar energy conversion devices (6 -10). The construction of a functional and efficient artificial solar energy conversion device would have a significant impact on our ability to use solar energy.To date, most research on the artificial solar energy conversion has focused on mimicking various aspects of natural photosynthesis. Through these studies, a reasonable understanding of various components necessary for construction of an artificial photosynthetic system has been developed. The main challenge at the moment is to assemble these components in a spatially organized manner, which will allow their efficient collaboration in harvesting the light energy and converting it efficiently into chemical energy. There are currently two strategies. One is based on constructing complex supramolecular assemblies in which the various components are linked together by chemical bonds (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22). The second utilizes various supports such as polymers (23-32), zeolites (33-38), sol-gel glasses (39 -41), lipid membranes (42, 43), or selfassembled films (44 -47) as scaffolds for incorporating and organizing the necessary components.Derivatized polymers provide an attractive approach to this problem because they offer f lexibility and simplicity in the design of multifunctional assemblies. We (23-28) and others (29 -32) have used derivatized polymers to gain insight into various aspects of the photosynthetic process. Recently, we showed, for example, that polymeric assemblies derivatized with polypyridyl complexes of Ru II and Os II display antenna and energy transport properties ...

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Electropolymerized Films of Macromeric Assemblies

Cited by 17 publications

References 45 publications

Photogenerated avenues in macromolecules containing Re(i), Ru(ii), Os(ii), and Ir(iii) metal complexes of pyridine-based ligands

Photogenerated avenues in macromolecules containing Re(i), Ru(ii), Os(ii), and Ir(iii) metal complexes of pyridine-based ligands

Synthesis and characterization of a biodegradable polymer prepared viaradical copolymerization of 2-(acetoacetoxy)ethyl methacrylate and molecular oxygen

Mimicking the antenna-electron transfer properties of photosynthesis

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