Molecular Recognition and Complexation Thermodynamics of Dye Guest Molecules by Modified Cyclodextrins and Calixarenesulfonates

2002 ◽  
Vol 106 (18) ◽  
pp. 4678-4687 ◽  
Author(s):  
Yu Liu ◽  
Bao-Hang Han ◽  
Yun-Ti Chen
Langmuir ◽  
2001 ◽  
Vol 17 (2) ◽  
pp. 504-510 ◽  
Author(s):  
R. Auzély-Velty ◽  
C. Péan ◽  
F. Djedaïni-Pilard ◽  
Th. Zemb ◽  
B. Perly

2015 ◽  
Vol 44 (32) ◽  
pp. 14411-14423 ◽  
Author(s):  
Krapa Shankar ◽  
Alexander M. Kirillov ◽  
Jubaraj B. Baruah

Recognition of 4-nitrophenol guest molecules by stacking and H-bonding interactions with a 4,4′-bipyridinium zinc dipicolinate host was found and investigated in detail.


1991 ◽  
Vol 54 (4) ◽  
pp. 593-597 ◽  
Author(s):  
Shingo Minato ◽  
Tetsuo Osa ◽  
Masahiko Morita ◽  
Asao Nakamura ◽  
Hiroshi Ikeda ◽  
...  

2017 ◽  
Vol 13 ◽  
pp. 1572-1582 ◽  
Author(s):  
Spyros D Chatziefthimiou ◽  
Mario Inclán ◽  
Petros Giastas ◽  
Athanasios Papakyriakou ◽  
Konstantina Yannakopoulou ◽  
...  

The enantioselectivity of β-cyclodextrin (β-CD) towards L- and D-N-acetyltryptophan (NAcTrp) has been studied in aqueous solution and the crystalline state. NMR studies in solution show that β-CD forms complexes of very similar but not identical geometry with both L- and D-NAcTrp and exhibits stronger binding with L-NAcTrp. In the crystalline state, only β-CD–L-NAcTrp crystallizes readily from aqueous solutions as a dimeric complex (two hosts enclosing two guest molecules). In contrast, crystals of the complex β-CD–D-NAcTrp were never obtained, although numerous conditions were tried. In aqueous solution, the orientation of the guest in both complexes is different than in the β-CD–L-NAcTrp complex in the crystal. Overall, the study shows that subtle differences observed between the β-CD–L,D-NAcTrp complexes in aqueous solution are magnified at the onset of crystallization, as a consequence of accumulation of many soft host–guest interactions and of the imposed crystallographic order, thus resulting in very dissimilar propensity of each enantiomer to produce crystals with β-CD.


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