Charge-transfer interaction of some pyridinium salts with hen egg-white lysozyme

Nakano, Y.; Komiyama, Jiro; Iijima, T.

doi:10.1007/bf01412757

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Weak binding (1−39 M -1 ) was found between the guest molecules and 1 in aqueous solutions. This observation is consistent with previous studies of simple acceptors such as methylviologen or 1-methylnicotinadide, as well as β-cyclodextrin derivatives, and pyrogallol or resorcinol cyclic tetramers with amino acids in aqueous media. Apparently, the free energy penalty incurred in desolvating the ionic host is almost equal to the attractive (hydrogen bonding and π-stacking) interactions in water.…”

Section: Resultssupporting

confidence: 93%

Chiral Molecular Recognition in a Tripeptide Benzylviologen Cyclophane Host

et al. 1998

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A cationic chiral cyclophane was synthesized and studied as a host for chiral and racemic π-donor molecules. The cyclophane host has a rigid binding cavity flanked by (S)-(valine-leucine-alanine) and N,N′-dibenzyl-4,4′-bipyridinium subunits, which allow for hydrogen-bonding and π-stacking interactions with included aromatic guest molecules. 1 H NMR binding titrations were performed with several different pharmaceutically interesting guest molecules including β-blockers, NSAIDs, and amino acids and amino acid derivatives. The host-guest complexation constants were generally small for neutral and cationic guests (0-39 M -1 at 20 °C in water/acetone mixtures). However, a (R)/(S) enantioselectivity ratio of 13 ( 5 was found for DOPA, a strongly π-donating cationic guest. Two-dimensional NOESY 1 H NMR spectra confirm that (R)-DOPA binds inside the cavity of the host and that there is no measurable interaction of the cavity with (S)-DOPA under the same conditions.

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Section: Resultssupporting

confidence: 93%

Chiral Molecular Recognition in a Tripeptide Benzylviologen Cyclophane Host

et al. 1998

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“…Synthesis of the Fluorescence Quencher -Methylpyridinium Chloride. The method of Nakaro et al 16 was modified.…”

Section: Methodsmentioning

confidence: 99%

Water-soluble copolymers. 40. Photophysical studies of the solution behavior of associative pyrenesulfonamide-labeled polyacrylamides

Ezzell¹,

Hoyle²,

Creed³

et al. 1992

Macromolecules

105

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Iron and Ruthenium Alkynyl Complexes with 2‐Fluorenyl Groups: Some Linear and Nonlinear Optical Absorption Properties

et al. 2016

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International audienceFour new mononuclear alkynyl complexes each featuring a terminal 2-fluorenyl group, namely Fe(η5-C5Me5)(CO)2[C≡C(2-C21H25)] (2), Ru(κ2-dppe)2Cl[C≡C(2-C21H25)] (3), Ru(κ2-dppe)2[C≡C(4-C6H4NO2)][C≡C(2-C21H25)] (4), and [Fe(η5-C5Me5)(κ2-dppe)_C≡C(C5H4N)-CH2(2-C13H9)_][PF6] (5[PF6]), have been synthesized and characterized, and their redox, absorption, and emission properties have been studied. For the two ruthenium derivatives 3 and 4, these studies are complemented by spectroelectrochemical investigations, Z-scan measurements, and DFT calculations. Fluorimetric studies reveal that these compounds are poorly or not luminescent, and, when luminescent, that the detected weak luminescence most likely originates from a higher lying ligand-centred (LC) excited state presumably located on fluorene. Finally, the third-order nonlinear optical (NLO) properties of 3 and 4 are reported. It is shown that the bis-alkynyl complex 4 is significantly more active than 3 and that both compounds exhibit two-photon absorption (TPA) around 860–1050 nm, with TPA cross-sections above 350 GM. In addition, it is shown that both species should give rise to a marked switching of their cubic NLO properties in this spectral range upon oxidation. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei

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Charge-transfer interaction of some pyridinium salts with hen egg-white lysozyme

Cited by 3 publications

References 33 publications

Chiral Molecular Recognition in a Tripeptide Benzylviologen Cyclophane Host

Chiral Molecular Recognition in a Tripeptide Benzylviologen Cyclophane Host

Water-soluble copolymers. 40. Photophysical studies of the solution behavior of associative pyrenesulfonamide-labeled polyacrylamides

Iron and Ruthenium Alkynyl Complexes with 2‐Fluorenyl Groups: Some Linear and Nonlinear Optical Absorption Properties

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