Design and Synthesis of Cyclodextrin-Based Rotaxanes and PolyrotaxanesJournal of inclusion phenomena - Tập 32 - Trang 363-373 - 1998
Naotoshi Nakashima, Atsushi Kawabuchi, Hiroto Murakami
Rotaxanes are compounds in which a ring is threaded by a chain having bulky terminal cap groups. In this article, we review the design, synthesis and characterization of rotaxanes and polyrotaxanes of cyclodextrins threaded by an alkyl chain or a poly(ethylene glycol) as well as the synthesis of a light-driven molecular shuttle based on a cyclodextrin-rotaxane.
Synthesis and metal ion extraction of cone di-ionizable calix[4]arene-crown-7 ligandsJournal of inclusion phenomena - Tập 83 - Trang 37-43 - 2015
Dong Eun Kang, Jennifer D. Crawford, Richard A. Bartsch
Cone calix[4]arene-1,3-crown-7 ligands bearing acidity tunable di-ionizable groups were prepared to examine the effect of the cavity size for the crown ether ring. The results of solvent extraction from aqueous solutions into chloroform show that these ligands are highly selective for Ba2+ among the alkaline earth metal cations and are good extractants for Pb2+ and for Hg2+.
Potentiometric Selectivities of Dibenzo-16-crown-5 Compounds for Alkali and Alkaline Earth Metal Cations and Ammonium IonsJournal of inclusion phenomena - Tập 32 - Trang 133-150 - 1998
Richard A. Bartsch, Jianping Lu
Potentiometric selectivities toward alkali and alkaline earth metal cations and ammonium ions are utilized to probe the complexation of these cationic species by dibenzo-16-crown-5 lariat ethers. Attachment of one or two pendant groups to the central carbon of the three-carbon bridge in dibenzo-16-crown-5 markedly alters the potentiometric responses of the ionophores when incorporated in solvent p...... hiện toàn bộ
Complexes of tri- and tetra-protonated forms of 1,4,8,12-tetraazacyclopentadecane with chloride, nitrate, iodate, and sulfate ions in aqueous media: I. Formation constants, thermodynamic properties, and bonding mechanismsJournal of inclusion phenomena - Tập 11 - Trang 333-348 - 1991
Joseph S. Alper, Robert I. Gelb, Marietta H. Schwartz
Complexation stoichiometries and formation constants of tri- and tetra-protonated forms of 1,4,8,12-tetraazacyclopentadecane with NO
3
−
, Cl−, IO
3
−
and SO
4
2−
ions are determined by pH potentiometric and13C NMR spectrometric measurements....... hiện toàn bộ
Highly selective binding behavior of (diethylamino)coumarin-modified β-cyclodextrin with bile acidsJournal of inclusion phenomena - Tập 93 - Trang 85-90 - 2018
Tetsuo Kuwabara, Yuta Hosokawa, Jinyang Hu, Takeshi Ide
A (diethylamino)coumarin-modified β-cyclodextrin (1) increased its fluorescence intensity upon guest binding in an aqueous media, and this phenomenon was used to detect organic compounds, specifically bile acids. The modified β-cyclodextrin chemosensor in this study exhibited remarkable molecular recognition, and particularly high selectivity toward certain bile acids, including lithcholic, chenod...... hiện toàn bộ
Structure-Chemical Analysis of Multiple Complexations by CyclodextrinsJournal of inclusion phenomena - Tập 50 - Trang 43-50 - 2004
Noriaki Funasaki
The interactions between cyclodextrin and substrates having two binding sites in aqueous solution are reviewed. For such substrates, multiple equilibria, NMR chemical shift variations with full binding, solution structures of complexes, and the effect of cavity size are analyzed quantitatively. After general treatments of multiple equilibria and chemical shifts are given, they are applied to three...... hiện toàn bộ
Polime phối hợp kẽm(II) và cadmium(II) với bis(4-pyridyl)benzylamine: cấu trúc và phát quang Dịch bởi AI Journal of inclusion phenomena - Tập 101 - Trang 243-252 - 2021
Ah Rim Jeong, Kil Sik Min
Hai polime phối hợp, [(bpba)Zn(CH3COO)2]n (1) và [(bpba)3Cd2(NO3)4]n·nMeOH·4nH2O (2) (bpba = bis(4-pyridyl)benzylamine), đã được tổng hợp bằng cách sử dụng Zn(CH3COO)2·2H2O/Cd(NO3)2·4H2O và bpba trong một hỗn hợp dung môi, và được định tính thêm. Ion kẽm(II) trong 1 hiển thị hình dạng tứ diện với hai nguyên tử oxy của các ligand acetate và hai nhóm pyridine của các ligand bpba, và nó được liên kết...... hiện toàn bộ
Nanodimer cyclodextrin ligands with high affinity to steroidsJournal of inclusion phenomena - Tập 70 - Trang 353-357 - 2010
Sergey Khomutov, Marina V. Donova
Molecular-imprinting by cross-linking of ligands of β-cyclodextrin (CD) complex with steroids has been developed for the synthesis of tailor-made CD dimer. Steroids of androstane (9α-hydroxy-androst-4-en-3,17-dione, androst-4-en-3,17-dione, androsta-1,4-dien-3,17-dione (ADD)) and pregnane (hydrocortisone, 6-methyl-hydrocortisone, 20-hydroxymethylpregna-1,4-diene-3-one (HMPD)) series were used as t...... hiện toàn bộ