The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A supramolecular polymer formed by N,N′,N″-tris(3,7-dimethyloctyl)benzene-1,3,5-tricarboxamide (DO 3 B) in n-decane (C 10 ) possesses large macro-dipoles naturally generated by three-fold inter-molecular hydrogen bonding aligned along its helical columnar structure connected by defective portions, which are DO 3 B molecules containing failure in the hydrogen bond formation,...
New ion-conducting polymer composite films have been prepared, and their ionic conducting properties have been investigated. The polymer composite films are fabricated from partially phosphorylated poly(vinyl alcohol) with tetramethylammonium salt (P-PVA.Me 4 N + ) and poly(acrylic acid) (PAA) or poly(ethylene glycol) (PEG). For P-PVA.Me 4 N + /PEG composite films,...
Ruthenium(II) complex- and viologen-containing polymers, which consist of the bis(2,2'-bipyridine) ruthenium(II) complex coordinated with imidazolyl residues on poly(1-vinylimidazole) (RuVPIm) and partially quaternized poly(1-vinylimidazole) (RuVQPIm) and viologen covalently linking these polymers through a hexylene spacer, have been synthesized. These polymers have two kinds of ruthenium(II) complex...
Photoinduced hydrogen generation from functional polymer films with photosensitizing ability, in which ruthenium(II) complexes are coordinated to imidazolyl residues on partially quaternized poly(1-vinylimidazole) (RuQPIm), have been investigated in aqueous solution. This system consists of RuQPIm free-standing films having various degrees of quaternization, electron relays such as 1,1 -dimethyl-4,4...
Catalase-like decomposition of hydrogen peroxide with the octacarboxy-phthalocyaninatoiron(III) (Fe(III)-oapc) supported on amorphous enriched rayon staple fibre (degree of crystallinity = 14%) was studied in aqueous solution at pH 7.0 and 25°C. The Fe(III)-oapc supported on the rayon staple fibre is remarkably effective as an immobilized catalyst for decomposition of hydrogen peroxide. The reaction...
The complex formation of Cr(III), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) ions with partially phosphorylated poly(vinyl alcohol) (P-PVA) in aqueous solution is studied by means of potentiometric titration and electronic as well as e.s.r. spectroscopy. The titration data and spectroscopic results suggest that bivalent and trivalent metal ions bind with two and three phosphoric acid groups in P-PVA...
The conformational transition of poly(methacrylic acid-co-styrenesulfonic acid) (PMAS) in aqueous solution was investigated by the luminescence probe method using Ru(bpy) 2+3 and viscometry. PMAS-8 (8 mol% styrenesulfonic acid (SS) residue) and PMAS-16 (16 mol% SS residue) revealed a unique conformational transition with changing negative charge on a polymer chain that had at least...
New anionic polyelectrolyte gels were prepared by the chemical crosslinking reaction of highly phosphorylated poly(vinyl alcohol)(P-PVA) with glutaraldehyde. The structures of the gels were determined by both i.r. and solid-state 13 C n.m.r. spectroscopy. The various types of polyanionic gels having high- or low-swelling characteristics and different degrees of hardness could be prepared...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.