Water-Soluble Copolymers. 52. Sodium-23 NMR Studies of Ion-Binding to Anionic Polyelectrolytes: Poly(sodium 2-acrylamido-2-methylpropanesulfonate), Poly(sodium 3-acrylamido-3-methylbutanoate), Poly(sodium acrylate), and Poly(sodium galacturonate)

1994 ◽  
Vol 27 (18) ◽  
pp. 5114-5122 ◽  
Author(s):  
J. Kent Newman ◽  
Charles L. McCormick
Keyword(s):  
Water Soluble ◽  
Sodium Acrylate ◽  
Ion Binding ◽  
Nmr Studies

1,3-dipolar cycloaddition in the synthesis of glycoconjugates of natural chlorins and bacteriochlorins

2009 ◽  
Vol 13 (03) ◽  
pp. 336-345 ◽  
Author(s):  
Mikhail A. Grin ◽  
Ivan S. Lonin ◽  
Anna A. Lakhina ◽  
Elena S. Ol'shanskaya ◽  
Alexey I. Makarov ◽  
...  
Keyword(s):  
Triple Bond ◽  
Tautomeric Form ◽  
Click Reaction ◽  
Copper Cation ◽  
Water Soluble ◽  
Dipolar Cycloaddition ◽  
Nmr Studies ◽  
Metal Free ◽  
Cu Complex ◽  
Derivatives Of

Glucose-, galactose- and lactose-containing photosensitizers based on derivatives of chlorophyll a and bacteriochlorophyll a were synthesized with the use of [3+2] cycloaddition between sugar azides and triple bond derivatives of chlorins and bacteriochlorins. Unlike bacteriochlorin cycloimide, chlorin was detected to form a Cu -complex during the click reaction. An approach to the synthesis of metal-free glycosylated chlorins was developed with the use of "protection" by Zn 2+ cation and subsequent demetalation. It is based on the action of alkynyl chlorin e6 derivative Zn -complex, which is resistant to the substitution by copper cation. Bacteriochlorin p cycloimide conjugate with per-acetylated β-D-lactose was obtained and shown to become water-soluble after unblocking of the lactose hydroxy functions. NMR studies allowed for the elucidation of structure, tautomeric form and conformation of the obtained compounds.

NMR studies of ion binding in biological systems

1987 ◽  
Vol 19 (1-2) ◽  
pp. 83-114 ◽  
Author(s):  
Sture Forsén ◽  
Torbjörn Drakenberg ◽  
Håkan Wennerström
Keyword(s):  
Inorganic Compounds ◽  
Biological Systems ◽  
Life Forms ◽  
Ion Binding ◽  
Nmr Studies

Biological systems must have evolved in an interplay between a great many organic and inorganic compounds. As a result a considerable number of elements - estimates range between 25 and 30 - are essential for higher life forms such as animals and man (Underwood, 1977; Williams, 1983, 1984).

NMR studies of metal ion binding to the Zn-finger-like HNH motif of colicin E9

2000 ◽  
Vol 79 (1-4) ◽  
pp. 365-370 ◽  
Author(s):  
Jonathan P Hannan ◽  
Sara B.-M Whittaker ◽  
Andrew M Hemmings ◽  
Richard James ◽  
Colin Kleanthous ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Nmr Studies ◽  
Colicin E9

Aqueous suspension of amphiphilic diblock copolymer nanoparticles prepared in situ from a water-soluble poly(sodium acrylate) alkoxyamine macroinitiator

Soft Matter ◽  
2006 ◽  
Vol 2 (3) ◽  
pp. 223 ◽  
Author(s):  
Guillaume Delaittre ◽  
Julien Nicolas ◽  
Catherine Lefay ◽  
Maud Save ◽  
Bernadette Charleux
Keyword(s):  
Diblock Copolymer ◽  
Aqueous Suspension ◽  
Water Soluble ◽  
Sodium Acrylate ◽  
Amphiphilic Diblock Copolymer ◽  
Soluble Poly
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