betadex and acridine-red

betadex has been researched along with acridine-red* in 2 studies

Other Studies

2 other study(ies) available for betadex and acridine-red

Article	Year
Reversible molecular switch of acridine red by triarylpyridine-modified cyclodextrin. Organic letters, 2013, Jan-04, Volume: 15, Issue:1 A novel molecular switch based on the supramolecular complex of 2,4,6-triarylpyridine modified β-cyclodextrin and acridine red was successfully constructed in aqueous solution, displaying the controlled photophysical behaviors by the effect of supramolecular positive cooperativity and fluorescence resonance energy-transfer process. Topics: beta-Cyclodextrins; Molecular Structure; Pyridines; Rhodamines	2013
Cooperative molecular recognition of dyes by dyad and triad cyclodextrin-crown ether conjugates. Organic & biomolecular chemistry, 2004, May-21, Volume: 2, Issue:10 Three beta-cyclodextrin (beta-CyD) derivatives with crown ether units, that is N-(4'-benzo-15-crown-5)-6-imino-6-deoxy-beta-CyD (2), 6,6'-[N-(4,4'-dibenzo-18-crown-6)-imino]-bridged bis(beta-CyD)(3), and 2,2'-[O-(4',5'-benzo-15-crown-5)-ethyl]-bridged bis (beta-CyD)(5), were synthesized as cooperative recognition receptor models. Their molecular binding behavior with four representative fluorescent dyes, i.e., ammonium 8-anilino-1-naphthalenesulfonate (ANS), sodium-6-toluidino-2-naphthalene-sulfonate (TNS), Acridine Red (AR) and Rhodamine B (RhB), was investigated in buffer solutions (pH = 7.20) at 25 degreesC by means of circular dichroism, NMR and fluorescence spectroscopy. 2D-ROESY experiments showed that dyad host 2 and triad host 3 adopted a CyD-guest-crown ether binding mode, while triad host 5 adopted a CyD-guest-CyD binding mode, upon inclusion complexation with guest molecules. Therefore, hosts 2 and 3 showed high molecular recognition ability towards charged guests, giving an enhanced binding ability up to 115 times for ANS by 3 and fairly high molecular selectivity up to 1450 times for the ANS/AR pair by 2 as compared with native beta-CyD in an aqueous phosphate buffer solution. On the other hand, host 5 was found to be able to effectively recognize the shape of a guest molecule, showing significantly higher binding ability towards linear guests. The binding affinities and molecular recognition abilities of these CyD-crown ether conjugates towards guest molecules are discussed from the viewpoint of electrostatic and/or hydrophobic interactions, size/shape-fit concept, and multiple recognition mechanism between host and guest. Topics: Anilino Naphthalenesulfonates; beta-Cyclodextrins; Binding Sites; Circular Dichroism; Crown Ethers; Cyclodextrins; Fluorescent Dyes; Hydrophobic and Hydrophilic Interactions; Ligands; Magnetic Resonance Spectroscopy; Models, Chemical; Models, Molecular; Molecular Structure; Naphthalenesulfonates; Rhodamines; Spectrometry, Fluorescence; Static Electricity	2004

Article

Year

Reversible molecular switch of acridine red by triarylpyridine-modified cyclodextrin.

Organic letters, 2013, Jan-04, Volume: 15, Issue:1

A novel molecular switch based on the supramolecular complex of 2,4,6-triarylpyridine modified β-cyclodextrin and acridine red was successfully constructed in aqueous solution, displaying the controlled photophysical behaviors by the effect of supramolecular positive cooperativity and fluorescence resonance energy-transfer process.

Topics: beta-Cyclodextrins; Molecular Structure; Pyridines; Rhodamines

2013

Cooperative molecular recognition of dyes by dyad and triad cyclodextrin-crown ether conjugates.

Organic & biomolecular chemistry, 2004, May-21, Volume: 2, Issue:10

Three beta-cyclodextrin (beta-CyD) derivatives with crown ether units, that is N-(4'-benzo-15-crown-5)-6-imino-6-deoxy-beta-CyD (2), 6,6'-[N-(4,4'-dibenzo-18-crown-6)-imino]-bridged bis(beta-CyD)(3), and 2,2'-[O-(4',5'-benzo-15-crown-5)-ethyl]-bridged bis (beta-CyD)(5), were synthesized as cooperative recognition receptor models. Their molecular binding behavior with four representative fluorescent dyes, i.e., ammonium 8-anilino-1-naphthalenesulfonate (ANS), sodium-6-toluidino-2-naphthalene-sulfonate (TNS), Acridine Red (AR) and Rhodamine B (RhB), was investigated in buffer solutions (pH = 7.20) at 25 degreesC by means of circular dichroism, NMR and fluorescence spectroscopy. 2D-ROESY experiments showed that dyad host 2 and triad host 3 adopted a CyD-guest-crown ether binding mode, while triad host 5 adopted a CyD-guest-CyD binding mode, upon inclusion complexation with guest molecules. Therefore, hosts 2 and 3 showed high molecular recognition ability towards charged guests, giving an enhanced binding ability up to 115 times for ANS by 3 and fairly high molecular selectivity up to 1450 times for the ANS/AR pair by 2 as compared with native beta-CyD in an aqueous phosphate buffer solution. On the other hand, host 5 was found to be able to effectively recognize the shape of a guest molecule, showing significantly higher binding ability towards linear guests. The binding affinities and molecular recognition abilities of these CyD-crown ether conjugates towards guest molecules are discussed from the viewpoint of electrostatic and/or hydrophobic interactions, size/shape-fit concept, and multiple recognition mechanism between host and guest.

Topics: Anilino Naphthalenesulfonates; beta-Cyclodextrins; Binding Sites; Circular Dichroism; Crown Ethers; Cyclodextrins; Fluorescent Dyes; Hydrophobic and Hydrophilic Interactions; Ligands; Magnetic Resonance Spectroscopy; Models, Chemical; Models, Molecular; Molecular Structure; Naphthalenesulfonates; Rhodamines; Spectrometry, Fluorescence; Static Electricity

2004