New water-soluble and film-forming aminocellulose tosylates as enzyme support matrices with Cu2+-chelating properties

Within the framework of our studies on enzyme-compatible support matrix structures, we succeeded in making further derivatives of the new aminocellulose type ‘P–CH2–NH–(X)–NH2’ (P = cellulose); (X) = –(CH2)2– (EDA), –(CH2)2–NH–(CH2)2– (DETA), –(CH2)3–NH–(CH2)3– (DPTA), –(CH2)2–NH–(CH2)2–NH–(CH2)2– (...

Full description

Saved in:
Bibliographic Details
Published in:Cellulose (London) 2005-02, Vol.12 (1), p.67-84
Main Authors: Jung, A., Berlin, P.
Format: Article
Language:English
Subjects:
Chelates
Chelation
Coordination compounds
Copper
Enzyme activity
Enzymes
Ethylenediamine
Glucose oxidase
NMR
Nuclear magnetic resonance
Optimization
Polymer films
Polymers
Silicon dioxide
Substitution reactions
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Within the framework of our studies on enzyme-compatible support matrix structures, we succeeded in making further derivatives of the new aminocellulose type ‘P–CH2–NH–(X)–NH2’ (P = cellulose); (X) = –(CH2)2– (EDA), –(CH2)2–NH–(CH2)2– (DETA), –(CH2)3–NH–(CH2)3– (DPTA), –(CH2)2–NH–(CH2)2–NH–(CH2)2– (TETA) accessible by nucleophilic substitution reaction with ethylenediamine (EDA) and selected oligoamines starting from 6(2)-O-tosylcellulose tosylate (DStosylate = 0.8). The 13C-NMR data show that the EDA and oligoamine residues are at C6 of the anhydroglucose unit (AGU) and that OH and tosylate are also (partially) present at C6. OH and partially tosylate are at C2/C3. All the synthesized aminocellulose tosylates were soluble in water and formed transparent films from their solutions. The aminocellulose tosylate solutions and the films prepared from them formed blue-coloured chelate complexes with Cu2+ ions, whose absorption maxima at wavelengths in the VIS region were located similarly to those of the Cu2+ chelate complexes with EDA and with the oligoamines. AFM investigations have shown that the aminocellulose films, depending on structural and environment-induced factors influencing e.g. SiO2 polymer films, exhibit ‘flat’ topographies (
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-004-4356-9