304484

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Excited state proton transfer in the Cinchona alkaloid cupreidine.

Junhong Qian et al.

Physical chemistry chemical physics : PCCP, 12(39), 12562-12569 (2010-08-21)

Photophysical properties of the organocatalyst cupreidine (CPD) and its chromophoric building block 6-hydroxyquinoline (6HQ) in protic and nonprotic polar solvents (methanol and acetonitrile) were investigated by means of UV-vis absorption, and steady state and time resolved fluorescence spectroscopy. The effects

Excited-state proton transfer via hydrogen-bonded acetic acid (AcOH) wire for 6-hydroxyquinoline.

Yu-Hui Liu et al.

The journal of physical chemistry. A, 115(1), 19-24 (2010-12-15)

Spectroscopic studies on excited-state proton transfer (ESPT) of hydroxyquinoline (6HQ) have been performed in a previous paper. And a hydrogen-bonded network formed between 6HQ and acetic acid (AcOH) in nonpolar solvents has been characterized. In this work, a time-dependent density

Proton translocation and electronic relaxation along a hydrogen-bonded molecular wire in a 6-hydroxyquinoline/acetic acid complex.

Mohan Singh Mehata

The journal of physical chemistry. B, 112(28), 8383-8386 (2008-06-20)

A hydrogen-bonded network formed between 6-hydroxyquinoline (6-HQ) and acetic acid (AcOH) has been characterized using a time-resolved fluorescence technique. In the bridged hydrogen-bonded complex of cis-6-HQ and AcOH, an excited-state reaction proceeds via proton transfer along the hydrogen bond, resulting

Fluorescence characteristics of protonated form of 6-hydroxyquinoline in Nafion film.

M S Mehata et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 59(3), 559-567 (2003-01-14)

Fluorescence characteristics of 6-hydroxyquinoline (6-HQ) have been studied at room temperature in Nafion(R) film by steady state and nano-second time-resolved fluorescence spectroscopy. The fluorescence spectrum exhibits single emission band corresponding to the protonated form of 6-HQ in this matrix. However

Excited-state prototropic equilibrium dynamics of 6-hydroxyquinoline encapsulated in microporous catalytic faujasite zeolites.

Sun-Young Park et al.

Chemistry (Weinheim an der Bergstrasse, Germany), 16(42), 12609-12615 (2010-09-21)

The excited-state proton transfer and geminate recombination of 6-hydroxyquinoline (6HQ) encaged in catalytic Na(+)-exchanged faujasite zeolites X (NaX) and Y (NaY) have been explored by measuring steady-state and picosecond time-resolved spectra. The pathways and rate constants of proton transfer of

Quinolin-6-ol at 100 K.

Anna Michta et al.

Acta crystallographica. Section C, Crystal structure communications, 65(Pt 2), o66-o69 (2009-02-05)

The title compound, C(9)H(7)NO, has two symmetry-independent molecules in the asymmetric unit, which have different conformations of the hydroxy group with respect to the quinoline ring. One of the molecules adopts a cis conformation, while the other shows a trans

Synthesis and antimosquito properties of 2,6-substituted benzo[d]thiazole and 2,4-substituted benzo[d]thiazole analogues against Anopheles arabiensis.

Katharigatta Narayanaswamy Venugopala et al.

European journal of medicinal chemistry, 65, 295-303 (2013-06-04)

A novel and efficient one pot synthesis was developed for 2,6-substituted-benzo[d]thiazole analogues 4a-k and 2,4-substituted-benzo[d]thiazole analogues 4l-pvia three component condensation reaction of substituted arylaldehyde, 2-amino-6-halo/4-methyl-benzo[d]thiazole and 2-naphthol or 6-hydroxyquinoline in presence of 10% w/v NaCl in water by microwave method.

TDDFT study of the polarity controlled ion-pair separation in an excited-state proton transfer reaction.

Yu-Hui Liu et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 128, 280-284 (2014-04-01)

6-Hydroxyquinoline (6HQ) is an ideal photoacid system for exploring excited-state proton transfer (ESPT) reactions. We have previously (Mahata et al. (2002)) shown that the ESPT reaction between 6HQ and trimethylamine (TMA) leads to an "unusual" emission in the 440-450 nm

Selective phenolic acylation of 10-hydroxycamptothecin using poly (ethylene glycol) carboxylic acid.

Richard B Greenwald et al.

Bioorganic & medicinal chemistry letters, 13(3), 577-580 (2003-02-05)

Selective acylation of the phenolic hydroxyl group of 10-hydroxycamptothecin has been accomplished using phenyl dichlorophosphate. Additional modification of the 10-OH as an ether permits a 20-acyl derivative to be synthesized. This result along with data from a 6-hydroxyquinoline model strongly

Microbial metabolism of quinoline and related compounds. IX. Degradation of 6-hydroxyquinoline and quinoline by Pseudomonas diminuta 31/1 Fa1 and Bacillus circulans 31/2 A1.

G Bott et al.

Biological chemistry Hoppe-Seyler, 372(6), 381-383 (1991-06-01)

Two strains, using 6-hydroxyquinoline as sole source of energy, carbon and nitrogen, have been isolated. These bacteria, designated 31/1 Fa1 and 31/2 A1, are also able to degrade quinoline. According to their physiological properties strain 31/1 Fa1 has been identified

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