Surfactant-induced chirality on reluctant aggregates of a chiral amphiphilic cationic (l)-proline–Zn(ii)porphyrin conjugate in water

RSC Advances ◽  
2014 ◽  
Vol 4 (98) ◽  
pp. 55362-55366 ◽  
Author(s):  
Edoardo Simoncini ◽  
Fabrizio Caroleo ◽  
Francesca Ceccacci ◽  
Giovanna Mancini ◽  
Manuela Stefanelli ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Aqueous Solutions ◽  
Porphyrin Derivative ◽  
Chiral Surfactants

The aggregation of an amphiphilic chiral Zn(ii)porphyrin derivative occurs in aqueous solutions of chiral surfactants with highly specific molecular recognition.

scholarly journals Molecular recognition of N-acetyltryptophan enantiomers by β-cyclodextrin

2017 ◽  
Vol 13 ◽  
pp. 1572-1582 ◽  
Author(s):  
Spyros D Chatziefthimiou ◽  
Mario Inclán ◽  
Petros Giastas ◽  
Athanasios Papakyriakou ◽  
Konstantina Yannakopoulou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Molecular Recognition ◽  
Aqueous Solutions ◽  
Crystalline State ◽  
Dimeric Complex ◽  
Nmr Studies ◽  
Guest Molecules ◽  
Crystallographic Order

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.

scholarly journals Stabilisation of lipid membrane-incorporated porphyrin derivative aqueous solutions and their photodynamic activities

2019 ◽  
Vol 18 (2) ◽  
pp. 459-466 ◽  
Author(s):  
Toshimi Nakaya ◽  
Banri Horiguchi ◽  
Shodai Hino ◽  
Kouta Sugikawa ◽  
Hisakage Funabashi ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Lipid Membrane ◽  
Hydrophilic Surface ◽  
Porphyrin Derivative ◽  
Photodynamic Activity

A porphyrin derivative which exists on the hydrophilic surface of the liposomes showed high photodynamic activity.

Molecular recognition of crown ethers by β-lactose in aqueous solutions

2006 ◽  
Vol 16 (1) ◽  
pp. 45-46
Author(s):  
Nadezhda L. Volkova ◽  
Elena V. Parfenyuk
Keyword(s):  
Molecular Recognition ◽  
Aqueous Solutions ◽  
Crown Ethers
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