There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

Hydrogels for tissue engineering.

https://yunus.hacettepe.edu.tr/~damlacetin/kmu407/index_dosyalar/4.%20makale.pdf

Biodegradable polymers as biomaterials

Hydrogels in pharmaceutical formulations.

Lithium (Li) metal is an ideal anode material for rechargeable batteries due to its extremely high theoretical specific capacity (3860 mA h g−1), low density (0.59 g cm−3) and the lowest negative electrochemical potential (−3.040 V vs. the standard hydrogen electrode). Unfortunately, uncontrollable dendritic Li growth and limited Coulombic efficiency during Li deposition/stripping inherent in these batteries have prevented their practical applications over the past 40 years. With the emergence of post-Li-ion batteries, safe and efficient operation of Li metal anodes has become an enabling technology which may determine the fate of several promising candidates for the next generation energy storage systems, including rechargeable Li–air batteries, Li–S batteries, and Li metal batteries which utilize intercalation compounds as cathodes. In this paper, various factors that affect the morphology and Coulombic efficiency of Li metal anodes have been analyzed. Technologies utilized to characterize the morphology of Li deposition and the results obtained by modelling of Li dendrite growth have also been reviewed. Finally, recent development and urgent need in this field are discussed.

Lithium metal anodes for rechargeable batteries

: Phosphazenes comprise a broad range of cyclic or linear small- molecules and high polymers that occupy and important place in the chemistry of heterocyclic compounds and new macromolecules. Typical structures are shown in Table 7.1. In these molecules the side groups, R, attached to phosphorus can vary broad range, from halogen or pseudohalogen units such as fluorine, chlorine, bromine, iodine,cyano, or isothiocyano, to simple or complex organic groups such alkoxy-, arylox-, amino-, alkyl-, aryl-, sugar units, amino acid ester groups, oligopeptides, transition metal complexes, porphyrins, phthalocyanines, organosilicon units, liquid crystalline, nonlinear optical, and photosensitive side groups, and a whole range of biologically active side groups.

Ring-Opening Polymerization of Phosphazenes

/pdf/erratum-to-biodegradable-polyphosphazene-based-blends-for-4f85gchbo8.pdf

Erratum to: Biodegradable Polyphosphazene-Based Blends for Regenerative Engineering

A new method for the synthesis of polyphosphazenes is described, together with the biomedical and electrochemical uses of phosphazene polymers with alkyl ether side groups

Recent Developments with an Impact on the Future of Polyphosphazene Science and Technology

Molecular design and synthesis in phosphazene high polymers is discussed, with an emphasis on structure-property relationships

Phosphazene high polymers; molecular design and the role of phosphorus in modern polymer chemistry

: Polyphosphazenes are a broad, novel class of inorganic-organic macromolecules. The physical properties of polyphosphazenes can be understood in terms of a highly flexible backbone, with various physical or chemical characteristics tailored by the incorporation of specific side groups. As part of our program to synthesize new materials with hybrid macromolecular properties, the synthesis and characterization of several IPNs containing phosphazene polymers is described. Phosphazenes, Polymers, Synthesis, Characterization, Interpenetrating polymer networks.

Harry R. Allcock

Papers

Ring-Opening Polymerization of Phosphazenes

Erratum to: Biodegradable Polyphosphazene-Based Blends for Regenerative Engineering

Recent Developments with an Impact on the Future of Polyphosphazene Science and Technology

Phosphazene high polymers; molecular design and the role of phosphorus in modern polymer chemistry

Synthesis and Characterization of Poly(Organophosphazene) Interpenetrating Polymer Networks