Effect of the Conformation of Polymer Chain on the Reduction Rate of Polyacrylatopentaamminecobalt(III) by Polymer-Bound Ferrous Chelates and the Excited State of Tris(Bipyridine)Ruthenium(Ii)

Kurimura, Yoshimi; Saito, Masahiro; Hiramatsu, Kyota; Sairenchi, Yoshihiro

doi:10.1080/00222339009349691

Journal of Macromolecular Science: Part A - Chemistry

1990

DOI: 10.1080/00222339009349691

|View full text |Cite

Effect of the Conformation of Polymer Chain on the Reduction Rate of Polyacrylatopentaamminecobalt(III) by Polymer-Bound Ferrous Chelates and the Excited State of Tris(Bipyridine)Ruthenium(Ii)

Yoshimi Kurimura

Masahiro Saito

Kyota Hiramatsu

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1992

1995

Publication Types

Select...

Article2

Relationship

Self Cite1

Independent1

Authors

Journals

Cited by 2 publications

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)₃^a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Kurimura¹,

Sairench²,

Nakayama³

1992

Makromolekulare Chemie. Macromolecular Symposia

Self Cite

View full text Add to dashboard Cite

The effects of the conformation of polymer chains on the electron transfer reactions and on the luminescence behavior of Ru(bpy)32+ in aqueous solutions of cis‐Co(A)PAA and cis‐Co(A)PMA ((A) = (en)2(OH2), en = ethylenediamine, PAA = poly(acrylic acid), and PMA = poly(methacrylic acid)) have been investigated by means of several spectrophotometric techniques. The results of the electron‐transfer reactions of the polymer Co(III) complexes with Cr(bpy)32+ and Fe(edta)2− revealed that, at low pH, part of the Co(III) complex moieties could hardly be reduced even in the presence of a large excess of the reducing agents when the degree of coordination of the Co(III) complex is very low. The magnitude of the degree of reduction of the Co(III) complex and the rate constants of the electron‐transfer reactions of Co(A)PMA are considerably affected by the conformational transition of the polymer chains. The luminescence behavior of Ru(bpy)32+ in aqueous solutions of these polymer complexes at around pH 5 are essentially explained by the spontaneous luminescence decay of the ex cited state of Ru(bpy)32+ ions which are localized in the compact form of the polymer chains and that of the non‐shielded ones which have a similar lifetime as in water. Effects of the conformational transition of Co(A)PMA chain on the luminescence intensity and the lifetime of the excited state of Ru(bpy)32+ are discussed in the light of the results obtained.

show abstract

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)₃^a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Kurimura¹,

Sairench²,

Nakayama³

1992

Makromolekulare Chemie. Macromolecular Symposia

Self Cite

View full text Add to dashboard Cite

show abstract

Kinetics of intra-polymer electron-transfer reactions in macromolecule–metal complexes

Suzuki¹,

Kobayashi²,

Koyama³

et al. 1995

J. Chem. Soc., Faraday Trans.

View full text Add to dashboard Cite

A macromolecul~metal complex with redox centres on the same polymer chain of partially quaternized poly(1vinylimidazole) (QPVlm) has been designed. In this complex, Co(tfacacen) (tfacacen = N,N'-ethylenebis(l,l,ltrifluoro-4-iminopentan-2-one), a Cot'-Schiff base complex, and quaternized imidazolium residues, an oxidizing agent, are both linked to a polymer backbone. The mechanism of the electron-transfer reaction between Co(tfacacen) and the quaternized imidazolium residue on this macromolecular complex have been investigated. The electron-transfer rate depends linearly on the concentration of Co" residues and the degree of quaternization but is independent of the concentration of quaternized imidazolium residue. These dependencies indicate that, under the experimental conditions, an intra-polymer electron-transfer reaction occurs in this system. The reaction product formed by reduction of the quaternized imidazolium residue was identified by means of 'H NMR and absorption spectroscopies. The results show that the predominant reduction product is 3-ethyl-4imidazoline-containing polymer.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Effect of the Conformation of Polymer Chain on the Reduction Rate of Polyacrylatopentaamminecobalt(III) by Polymer-Bound Ferrous Chelates and the Excited State of Tris(Bipyridine)Ruthenium(Ii)

Cited by 2 publications

References 15 publications

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)₃^a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)₃^a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Kinetics of intra-polymer electron-transfer reactions in macromolecule–metal complexes

Contact Info

Product

Resources

About

Effect of the Conformation of Polymer Chain on the Reduction Rate of Polyacrylatopentaamminecobalt(III) by Polymer-Bound Ferrous Chelates and the Excited State of Tris(Bipyridine)Ruthenium(Ii)

Cited by 2 publications

References 15 publications

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)3a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)3a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Kinetics of intra-polymer electron-transfer reactions in macromolecule–metal complexes

Contact Info

Product

Resources

About

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)₃^a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes

Conformational effects of polymer chains on the electron‐transfer reactions and luminescence behavior of Ru(bpy)₃^a+ in aqueous solutions of poly(acrylic acid)‐ and poly(methacrylic acid)‐bound Co (III) complexes