Biological Activities of Metal-Containing Polymers

Carraher, Charles E.; Giron, David; Cerutis, D. Roselyn; Burt, W. R.; Venkatachalam, R. S.; Gehrke, Timothy J.; Tsuji, Shuzo; Blaxall, Howard S.

doi:10.1021/bk-1982-0186.ch002

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“…(The uranyl ion is the most common natural-occurring water soluble form of uranium.) This has been extended to removal utilizing salts of polyacrylic acids, polyacrylic acid itself, and a wide variety of carboxylic acid sulfonate and sulfate containing resins (33). Almost all of these compounds containing the complexed uranyl moiety have greatly reduced toxicities to a wide range of bacteria and fungi compared to UNHH itself (33).…”

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confidence: 99%

“…This has been extended to removal utilizing salts of polyacrylic acids, polyacrylic acid itself, and a wide variety of carboxylic acid sulfonate and sulfate containing resins (33). Almost all of these compounds containing the complexed uranyl moiety have greatly reduced toxicities to a wide range of bacteria and fungi compared to UNHH itself (33). Thus the toxicity has been significantly reduced through chelation of the uranyl ion.…”

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confidence: 99%

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Organometallic polymers

Carraher¹

1981

J. Chem. Educ.

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lnterrelationshlp with Traditional Chemistry and Polymer ChemistryJust as the field of oreanometallic chemistrv emerged from --both inorganic and organic chemistry, the area of organometallic nolvmer chemistrv develoned through a range of sub-. .--disciplines including organic, polymer, physical, inorganic chemistry and chemical engineering. I t is important to remember that the same factors that operate in regard to smaller molecules are in operation with macromolecules (including organometallic polymers) and polymerization reactions including electronic, steric, mechanistic, kinetic and thermodynamic factors. Further, since small differences are accentuated in nature because these parameters are often exponentially related, reactions resulting in the formation of polymers and polymeric interactions will enhance these small differences since theexponential difierenocs are now typic ally^ linerally enhanced as each step (or unit interaction) in the formation of macromolecules will be dependent on i i m i l~r parameters. Thus reactions leading to the synthesis of macromolecules and interactions involving the resulting macromolecule can be used in portraying to ytudents basic chemical ~r i n c i~l e s to a hetter extent than illustrations now utilized to-illustrate these principles emnloving smaller molecules.one-frequent misconception concerns the type of honding that occurs between the metal and organic unit. With the exception of metals present in metallocene "sandwich" compounds, most of the metal-to-nonmetal honding is of the same eeneral nature as that oresent in classical oreanic compounds. The percentage contribution of the metal-nonmetal hond due to covalent contrihutions is twicallv hieh but within ?. -" that found in some organic acid, alcohol, thio and nitro moieties (for instance usual limits are about 6% ionic honding character for the B-C hond to 55% for the Sn-0 hond). Thus the same general spatial, geometric laws which apply to honding in organic compounds apply to honding in organometallic monomers and polymers. IntroductionThe potential breadth of the field of organometallic polymers can he seen in relation to more traditional nolvmer chemistry by comparing the numher and variety of eiedents tvnicallv found in classic oolvmers (C.H.N.S.P.Cl.Br.0.F) . . . . . .G t h the numher and varie6 oireadily availahle metals (o;ei 44 metals). Further, many of the metals can he present in several oxidation states. The potential importance, academically and industrially, of organometallic polymers can he seen by considering the organopolysiloxanes. They are characterized by combinations of chemical, mechanical, and electrical properties not common to any other commercially availahle class of polymers. They have relatively high thermal and oxidative stability, low power loss, unique rheological properties, and high dielectric strength, and are relatively inert to most ionic reagents.A wide range of silicone polymers has been known for several decades. While research continues with these siloxanes, this paper w...

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Section: / \ Hn Nhmentioning

confidence: 99%

Section: / \ Hn Nhmentioning

confidence: 99%

Organometallic polymers

Carraher¹

1981

J. Chem. Educ.

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“…Several tin-containing polymers have an interesting biological activity [5]. For example, germanium-containing polymers show photoactivity [3] and semiconductivity [4].…”

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confidence: 99%

Oxidation–reduction alternating copolymerization of stannylenes with p‐benzoquinone derivatives

1995

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Stannylenes, bis[bis(trimethylsilyl)amido]tin(II) (1) and bis[bis(trimethylsilyl)methyl]tin(II) (2), have been copolymerized with p‐benzoquinone derivatives to afford a novel class of tin‐containing polymers (4 and 5) having a tetravalent tin unit and a p‐hydroquinone unit alternatingly in the main chain. The oxidation state of the stannylenes changes from two to four while the p‐benzoquinone moiety is reduced to the corresponding p‐hydroquinone unit, indicating that the copolymerization proceeds via a redox process (oxidation‐reduction copolymerization). Some of the resulting copolymers are stable at room temperature and soluble in common organic solvents such as chloroform and n‐hexane. The molecular weight (Mw) of the resulting copolymers was in the range of 1.1 x 105 to 4.9 x 103.

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Organoantimony Compounds with Pentavalent Antimony

Wieber

1986

Sb Organoantimony Compounds Part 4

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Biological Activities of Metal-Containing Polymers

Cited by 4 publications

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Organometallic polymers

Organometallic polymers

Oxidation–reduction alternating copolymerization of stannylenes with p‐benzoquinone derivatives

Organoantimony Compounds with Pentavalent Antimony

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