Micellization in aqueous solution of an ethylene oxide–propylene oxide triblock copolymer, investigated with 1H NMR spectroscopy, pulsed-field gradient NMR, and NMR relaxation

2007 ◽  
Vol 312 (2) ◽  
pp. 390-396 ◽  
Author(s):  
Junhe Ma ◽  
Chen Guo ◽  
Yalin Tang ◽  
Junfeng Xiang ◽  
Shu Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Nmr Spectroscopy ◽  
Ethylene Oxide ◽  
Field Gradient ◽  
1H Nmr ◽  
Propylene Oxide ◽  
Triblock Copolymer ◽  
1H Nmr Spectroscopy ◽  
Nmr Relaxation ◽  
Pulsed Field

Comparative conformational analyses of μ-selective dermorphin and §-selective deltorphin-II in aqueous solution by 1H-NMR spectroscopy

2009 ◽  
Vol 44 (3) ◽  
pp. 295-304 ◽  
Author(s):  
MOTOZUMU SEGAWA ◽  
YASUNORI OHNO ◽  
MITSUNOBU DOI ◽  
MASATOSHI INOUE ◽  
TOSHIMASA ISHIDA ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Deltorphin Ii

Supramolecular Chemistry of Pyronines B and Y, β-Cyclodextrin and Linked β-Cyclodextrin Dimers

2010 ◽  
Vol 63 (4) ◽  
pp. 687 ◽  
Author(s):  
Huy T. Ngo ◽  
Philip Clements ◽  
Christopher J. Easton ◽  
Duc-Truc Pham ◽  
Stephen F. Lincoln
Keyword(s):  
Aqueous Solution ◽  
Nmr Spectroscopy ◽  
Fluorescence Quenching ◽  
Supramolecular Chemistry ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Complexation Constants

The complexation of cationic pyronine B (PB+) and pyronine Y (PY+) by β-cyclodextrin (βCD) and two linked βCD dimers, N,N′-bis((2AS,3AS)-3A-deoxy-β-cyclodextrin-3A-yl)succinamide, 33βCD2suc, and N,N′-bis(6A-deoxy-β-cyclodextrin-6A-yl)succinamide, 66βCD2suc, in aqueous solution has been studied by UV-vis, fluorescence, and 1H NMR spectroscopy. The complexation constants for the 1:1 complexes: βCD.PB+, 33βCD2suc.PB+, 66βCD2suc.PB+, and the analogous PY+ complexes are reported as are the dimerization constants for PB+ and PY+. The modes of complexation, dimerization, and fluorescence quenching are discussed.

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