A pulsed gradient spin echo NMR study of guest encapsulation by hydrogen-bonded tetraurea calix(4)arene dimers

作者: Limor Frish , Susan E. Matthews , Volker Böhmer , Yoram Cohen

DOI: 10.1039/A900690G

关键词:

摘要: Diffusion coefficients, as obtained by the PGSE NMR technique, were used to probe encapsulation of guests in self-assembled tetraurea calix[4]arene dimers organic solvents and demonstrate their destruction DMSO.

参考文章(9)
René Wyler, Javier de Mendoza, Julius Rebek, A Synthetic Cavity Assembles Through Self-Complementary Hydrogen Bonds† Angewandte Chemie. ,vol. 32, pp. 1699- 1701 ,(1993) , 10.1002/ANIE.199316991
Donald J. Cram, Molecular container compounds Nature. ,vol. 356, pp. 29- 36 ,(1992) , 10.1038/356029A0
Oliver Mogck, Miquel Pons, Volker Böhmer, Walter Vogt, NMR Studies of the Reversible Dimerization and Guest Exchange Processes of Tetra Urea Calix[4]arenes Using a Derivative with Lower Symmetry Journal of the American Chemical Society. ,vol. 119, pp. 5706- 5712 ,(1997) , 10.1021/JA970078O
Manfred Holz, Xi‐an Mao, Dieter Seiferling, Antonio Sacco, EXPERIMENTAL STUDY OF DYNAMIC ISOTOPE EFFECTS IN MOLECULAR LIQUIDS : DETECTION OF TRANSLATION-ROTATION COUPLING Journal of Chemical Physics. ,vol. 104, pp. 669- 679 ,(1996) , 10.1063/1.470863
E. O. Stejskal, J. E. Tanner, Spin diffusion measurements : spin echoes in the presence of a time-dependent field gradient Journal of Chemical Physics. ,vol. 42, pp. 288- 292 ,(1965) , 10.1063/1.1695690
Oliver Mogck, Volker Böhmer, Walter Vogt, Hydrogen bonded homo- and heterodimers of tetra urea derivatives of calix[4]arenes Tetrahedron. ,vol. 52, pp. 8489- 8496 ,(1996) , 10.1016/0040-4020(96)00404-8
Volker Böhmer, Calixarenes, Macrocycles with(Almost) Unlimited Possibilities Angewandte Chemie International Edition in English. ,vol. 34, pp. 713- 745 ,(1995) , 10.1002/ANIE.199507131
Ayelet Gafni, Yoram Cohen, Complexes of Macrocycles with gamma-Cyclodextrin As Deduced from NMR Diffusion Measurements. Journal of Organic Chemistry. ,vol. 62, pp. 120- 125 ,(1997) , 10.1021/JO961758X
Blake C. Hamann, Ken D. Shimizu, Julius Rebek, Reversible Encapsulation of Guest Molecules in a Calixarene Dimer Angewandte Chemie. ,vol. 35, pp. 1326- 1329 ,(1996) , 10.1002/ANIE.199613261