Introduction of metal binding units into biodegradable polymers utilizing metallo-supramolecular initiators

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Polystyrene with pendant mixed functional ruthenium(II)-terpyridine complexes

A vinyl substituted 2,2:6,2-terpyridine and a mixed, bifunctional ruthenium(II)-terpyridine complex bearing a vinyl and a hydroxymethyl group are utilized as comonomers for radical copolymerization with styrene. The resulting polymers are characterized by means of UV-vis spectroscopy and gel permeation chromatography, coupled with an in-line diode array spectrophotometer

Microwave-assisted polymer synthesis : recent developments in a rapidly expanding field of research

The use of microwave irradn. has become a common heat source in org. chem. Inspired by this enormous success, the use of microwave irradn. is also increasingly studied for polymn. reactions. The present review discusses developments in this rapidly growing field of research. The main areas in which the use of microwave irradn. has been explored in the recent years are step-growth polymns., ring- opening polymns. as well as radical polymns. These different areas will be addressed in detail, whereby special attention will be given to obsd. improvements resulting from the use of microwave irradn. as well as the occurrence of non-thermal effects

Water-soluble building blocks for terpyridine-containing supramolecular polymers : synthesis, complexation, and pH stability studies of poly(ethylene oxide) moieties

Poly(ethylene oxide) of various molecular weights ([bar M ]n = 3 000, 5 200, 10 000, 16 500 g · mol-1) has been modified with terpyridine end groups as building blocks for water-soluble metallo-supramolecular polymers. Metallo-supramolecular A-A homopolymers have been prepared and characterized by complexing the terpyridine units of one selected poly(ethylene oxide) ([bar M ]n = 3 000 g · mol-1) with the following transition metal ions in their 2+ oxidation state: Fe, Ru, Co, Ni, Cu, Zn, and Cd. In addition, the stability of the supramolecular connection with respect to pH variations has been investigated

Functional (block) copolymers with metal complexing segments

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Techniques and instrumentation for combinatorial and high-throughput polymer research: Recent developments

A review. Emerging from the field of biochem. and pharmaceutical research, combinatorial and high-throughput synthesis and screening methodologies are rapidly being adopted in polymer and materials research. Alternative solns. to cost intensive custom-made synthetic robot systems have become com. available and further accelerate this field of research not just in industry, but also in an academic environment. High-throughput anal., materials characterization, and testing (surface energy, hardness, wettability, crystallinity etc.) are key techniques and require suitable instrumentation. Here we present a short overview of recent developments of robotic synthesizers and anal. equipment extending the review from Jan. 200

Macromolecules containing bipyridine and terpyridine metal complexes: towards metallo-supramolecular polymers

The ability of a broad range of N-heterocycles to act as very effective and stable complexation agents for several transition metal ions, such as cobalt(II), copper(II), nickel(II), and ruthenium(II), has long been known in analytical chemistry. This behavior was later utilized in supramolecular chemistry for the construction of highly sophisticated architectures, such as helicates, racks, and grids. The discovery of macromolecules by Staudinger in 1922 opened up avenues towards sophisticated materials with properties hitherto completely unknown. In the last few decades, the combination of macromolecular and supramolecular chemistry has been attempted by developing metal-complexing and metal-containing polymers for a wide variety of applications that range from filtration to catalysis. The stability of the polymer-metal complex is a fundamental requirement for such applications. In this respect, the use of bi- and terpyridines as chelating ligands is highly promising, since these molecules are known to form highly stable complexes with interesting physical properties with transition-metal ions. A large number of different structures have been designed for many different applications, but polymers based on the application of coordinative forces have been prepared in a few cases only. Furthermore, the synthetic procedures applied frequently resulted in low yields. During the last few years, strong efforts have been made in the direction of self-assembling and supramolecular polymers as novel materials with intelligent and tunable properties. In this review, an overview of this active area at the interface of supramolecular and macromolecular chemistry is given

From small organic entities to metallo-supramolecular polymers

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Recent developments in the supramolecular chemistry of terpyridine-metal complexes

This critical review describes recent developments in the field of supramolecular chemistry of terpyridine–metal complexes. The synthesis and characteristics of single as well as multiple homo- and heterometallic complexes is discussed. Furthermore, complexes containing fullerenes, biological building blocks, extended aggregates of different architectures as well as rings are presented. A special emphasis is placed upon the properties (e.g. redox properties, luminescence etc.) of functional systems. Potential applications in optical nano-devices, molecular storage units, molecular switches and solar cells are discussed

Metallo-supramolecular graft copolymers based on terpyridine metal complexes

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