Synthesis, absolute configuration and conformation of optically active 1,2-homoheptafulvaleneElectronic supplementary information (ESI) available: 600 MHz 1H NMR spectrum of 1,2-homoheptafulvalene (1); UV–visible and CD spectra of 4. See http://www.rsc.org/suppdata/ob/b2/b210949m/

2003 ◽  
Vol 1 (3) ◽  
pp. 488-492
Author(s):  
Shunji Ito ◽  
Mitsuhiro Kurita ◽  
Sigeru Kikuchi ◽  
Toyonobu Asao ◽  
Yoshitora Ito ◽  
...  
2011 ◽  
Vol 197-198 ◽  
pp. 1153-1156
Author(s):  
Ning Chen ◽  
Ya Bin Li

The characteristics of host-guest complexes between cucurbit[n]uril (CB [n]) and phenylalanine were investigated by UV-visible absorption spectroscopy in acetate buffer solution at room temperature. It was found that the UV-visible absorption increased steadily with constantly dropping the high concentration of cucurbit[6]uril (CB [6]) and cucurbit[8]uril (CB [8]) in the phenylalanine solution which indicates that there are some interaction betweenCB [n] and phenylalanine.Then CB [6] and phenylalanine at molar ratio of 1:1 to weigh while CB [8] and phenylalanine at molar ratio of 1:2, respectively, are both demonstrated by 1H NMR spectra. 1H NMR spectrum of complexes was obtained, indicating an enthalpic driving force for host-guest complexes. The possible interaction mechanism and inclusion mode were also discussed. This work may extend the application range of CB [n] in supramolecular and pharmaceutical analysis.


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