Exploring the charge transfer dynamics of hydrogen bonded crystals of 2-methyl-8-quinolinol and chloranilic acid: synthesis, spectrophotometric, single-crystal, DFT/PCM analysis, antimicrobial, and DNA binding studies

Abstract

The chemistry of the CT complex between donor 2-methyl-8-quinolinol (2 MQ) and acceptor chloranilic acid (CHLA) has been studied by using electronic absorption spectroscopy in acetonitrile, methanol, and ethanol at room temperature.

Charge Transfer Complex betweenO-Phenylenediamine and 2, 3-Dichloro-5, 6-Dicyano-1, 4-Benzoquinone: Synthesis, Spectrophotometric, Characterization, Computational Analysis, and its Biological Applications

“…The charge migration probability is expressed by the oscillator strength ( f ), which is a dimensionless variable. We can bring out the f values from the spectrum of CT absorption and transition dipole moments (μ in Debye) of the donor–acceptor complex − were estimated from the subsequent relations where denotes the extinction coefficient of the CT-peak and denotes the width of the half CT-band at maximum absorption value. where is the half bandwidth (in cm –1 ), and ε max and are the extinction coefficient and wavenumber at the maximum absorption of the CT-band, respectively. The results have been presented in Table .…”

Synergistic Enhancement of Hydrogen-Bonding and Charge-Transfer Interactions in a Crystal of an Anthranol–Acridine Dyad Comprised of a Hydrogen-Bonded Chain Aggregate

“…The strength and directionality of hydrogen bonding can be controlled using appropriate molecular design and chemical modification strategies. − Recently, much attention has been given to understanding the role played by hydrogen-bonding interactions in electron transfer in biological systems and to developing new strategies for the design of materials in which efficient electron transfer takes place. In this context, proton–electron cooperation in hydrogen-bonded charge-transfer (CT) complexes has attracted theoretical and experimental interest. − The unusually colored quinhydrone complex A , composed of para -hydroquinone and para -benzoquinone, is an example of a system of this type, − in which polarization of the hydrogen-bonding interaction has a cooperative effect on CT-type π–π interactions.…”