Dynamic Control of the Self-Assembling Properties of Cyclodextrins by the Interplay of Aromatic and Host-Guest Interactions

被引:11
作者
Neva, Tania [1 ]
Carmona, Thais [2 ]
Benito, Juan M. [1 ]
Przybylski, Cedric [3 ]
Ortiz Mellet, Carmen [4 ]
Mendicuti, Francisco [2 ]
Garcia Fernandez, Jose M. [1 ]
机构
[1] Univ Seville, CSIC, IIQ, Seville, Spain
[2] Univ Alcala, Fac Chem, Dept Analyt Chem Phys Chem & Chem Engn, Madrid, Spain
[3] Sorbonne Univ, CNRS, IPCM, Paris, France
[4] Univ Seville, Dept Organ Chem, Fac Chem, Seville, Spain
关键词
cyclodextrins; self-assembly; supramolecular chemistry; naphthalene; host-guest chemistry; fluorescence; circular dichroism; INDUCED CIRCULAR-DICHROISM; BETA-GLUCOCEREBROSIDASE ACTIVITY; PHARMACOLOGICAL CHAPERONES; CONFORMATIONAL-ANALYSIS; INCLUSION COMPLEXES; MOLECULAR-DYNAMICS; ALPHA-CYCLODEXTRIN; GENE DELIVERY; FLUORESCENCE; NAPHTHALENE;
D O I
10.3389/fchem.2019.00072
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The presence of a doubly-linked naphthylene clip at the O-2(I) and O-3(II) positions in the secondary ring of beta-cyclodextrin (beta CD) derivatives promoted their self-assembly into head-to-head supramolecular dimers in which the aromatic modules act either as cavity extension walls (if the naphthalene moiety is 1,8-disubstituted) or as folding screens that separate the individual beta CD units (if 2,3-disubstituted). Dimer architecture is governed by the conformational properties of the monomer constituents, as determined by NMR, fluorescence, circular dichroism, and computational techniques. In a second supramolecular organization level, the topology of the assembly directs host-guest interactions and, reciprocally, guest inclusion impacts the stability of the supramolecular edifice. Thus, inclusion of adamantane carboxylate, a well-known beta CD cavity-fitting guest, was found to either preserve the dimeric arrangement, leading to multicomponent species, or elicit dimer disruption. The ensemble of results highlights the potential of the approach to program self-organization and external stimuli responsiveness of CD devices in a controlled manner while keeping full diastereomeric purity.
引用
收藏
页数:18
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