Abstracts - faqs.org

Abstracts

Chemicals, plastics and rubber industries

Search abstracts:
Abstracts » Chemicals, plastics and rubber industries

Comment on "Ground-state triple proton transfer in 7-hydroxyquinoline, part 4. Observation in room-temperature methanol and aqueous solutions."

Article Abstract:

A. Bohra et al claim that different 7-hydroxyquinoline (HQ) self-associated forms are present in room-temperature methanol solution. Moreover, strong assemblage effects were observed in both polar and nonpolar solvents. However, a series of excitation spectrum measurements revealed that the formation of various 7HQ self-associated forms in room-temperature methanol solution is but the product of a spectral distortion arising from the use of conventional fluorimeters. An excited-state proton-transfer dynamics study supports the existence of 7HQ species only in nonpolar events.

Author: Chou, Pi-Tai, Wei, Ching-Yen
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
Methanol, Protons, Excited state chemistry

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Conjugated dual hydrogen-bond mediating proton-transfer reaction in 3-hydroxyisoquinoline

Article Abstract:

The proton-transfer tautomerism in the ground and excited states of 3-hydroxyisoquinoline induced by the conjugated dual hydrogen-bonding (CDHB) effect has been investigated. The results showed the influence of CDHB formation in fine-tuning the ground state equilibrium to the keto form. In the excited state, the enol CDHB complexes undergo rapid proton-transfer reaction which results in keto emission. The reaction has been elucidated by a deactivation mechanism induced by vibrations of low-frequency hydrogen-bonding modes caused by the CDHB.

Author: Chou, Pi-Tai, Wei, Ching-Yen, Yu, Wei-Shan, Hung, Fa-Tsai, Chang, Chen-Pin, Lin, Te-Ching
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
Hydrogen bonding, Hydrogen bonds

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Photoinduced double proton tautomerism in 4-azabenzimidazole

Article Abstract:

Issues concerning the use of theoretical calculations, absorption and emission to investigate the hydrogen-bonded complexes of 4-azabenzimidazole are discussed.

Author: Chou, Pi-Tai, Hung, Fa-Tsai, Chang, Chen-Pin, Wu, Guo-Ray, Wie, Ching-Yen, Cheng, Chung-Chih
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
Research and Development in the Physical, Engineering, and Life Sciences, Chemistry, Analysis, Chemical research, Chemistry, Physical and theoretical, Physical chemistry

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Subjects list: Research, Quinoline, Quinolines, Charge transfer
Similar abstracts:
  • Abstracts: Comment on "analysis on solvated molecules with a new energy partitioning scheme for intra- and intermolecular interactions"
  • Abstracts: Effect of water on the electron transfer dynamics of 9-anthracenecarboxylic acid bound to TiO2 nanoparticles: demonstration of the Marcus inverted region
  • Abstracts: Comments on the 27Al NMR visibility of aluminas. Solid state NMR. Neutron diffraction experiments
This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.
Some parts © 2023 Advameg, Inc.