Preferential Solvation Studies of 1, 5 Diamino Anthraquinone in Binary Liquid Mixtures

Suganthi, G.; Meenakshi, C.; Ramakrishnan, V.

doi:10.1007/s10895-009-0527-2

Cited by 22 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically, ADA was synthesized via amide coupling of 1,5‐diaminoanthraquinone and acyl chloride of 10,12‐pentacosadiynoic acid (PCDA). ADA is soluble in various solvents, and its color (i.e., absorbance in the visible spectral range) and fluorescence excitation/emission properties in solution state were dependent upon solvent polarity (Figure S1, Supporting Information), accounting for the solvatochromism of the anthraquinone moiety [ 39,40 ]…”

Section: Resultsmentioning

confidence: 99%

Aggregation‐Dependent Chromism and Photopolymerization of Aminoanthraquinone‐Substituted Diacetylenes

Bisht

Dhyani

Jelinek

2020

Advanced Optical Materials

View full text Add to dashboard Cite

Polydiacetylenes have attracted significant interest for their unique chromatic properties and applications in sensing, imaging, and optics. Here, it is demonstrated that aminoanthraquinone‐substituted diacetylenes exhibit distinct aggregation‐dependent chromatic properties, affected by the alignment of both the aminoanthraquinone headgroups and diacetylene sidechains. Specifically, it is shown that aminoanthraquinone‐diacetylene monomers adopt different film organizations depending upon the polarity of the solvent employed for predissolution. In particular, a yellow aminoanthraquinone‐diacetylene phase, which undergoes photopolymerization upon ultraviolet irradiation, is produced upon dissolution in polar organic solvents prior to deposition and drying on solid substrates. In contrast, a red phase that can not be polymerized is observed when the monomers are predissolved in apolar solvents. Microscopic and spectroscopic analyses indicate that the optical properties of the films are determined by the degree of overlap between the aminoanthraquinone headgroups as well as the alignment of the diacetylene sidechains; both factors are intimately affected by interactions of the monomers with solvent molecules. It is shown that the aggregation‐dependent diacetylene films exhibit remarkable solvochromic, thermochromic, and mechanochromic properties. The aminoanthraquinone‐substituted diacetylenes may facilitate chromatic tuning of polydiacetylene systems in the solid state, determined by solvent‐ and intermolecular interactions and concomitant self‐assembly of the pendant sidechains and aromatic headgroups.

show abstract

Section: Resultsmentioning

confidence: 99%

Aggregation‐Dependent Chromism and Photopolymerization of Aminoanthraquinone‐Substituted Diacetylenes

Bisht

Dhyani

Jelinek

2020

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…Also

\frac{f_{2}}{{normalf}_{1}}

>1 for both absorption and emission maxima. These observations, both in the zero point energy state (ZPS) and the excited energy state 3OCE, demonstrated that the solute was preferentially solvated by the more polar solvent AN . To understand preferential solvation with nonspecific interactions in the solvent mixture through dielectric enrichment, Suppan's theory of dielectric enrichment for a single shell approximation was applied.…”

Section: Resultsmentioning

confidence: 99%

Effect of preferential solvation and bimolecular quenching reactions on 3OCE in acetonitrile and 1,4‐dioxane binary mixtures by optical absorption and fluorescence studies

Muttannavar¹,

Melavanki

Sharma

et al. 2019

Luminescence

View full text Add to dashboard Cite

Fluorescence quenching and preferential solvation of a coumarin derivative, namelywith aniline used as a quencher in solvent mixtures of acetonitrile (AN) and 1,4dioxane (DX) was carried out at steady state. Suppan's theory of dielectric enrichment was used to understand the nonideality and dielectric enrichment in AN-DX solvent mixtures. The effect of viscosity and dielectric constant variation at room temperature were analyzed. Quenching was characterized using Stern-Volmer plots with an upward curvature. It was found that 3OCE underwent combined static and dynamic quenching that was evident from the quenching rate parameters. KEYWORDS3OCE, bimolecular quenching reactions and diffusion limited reaction, preferential solvation, Suppan's theory of dielectric enrichment

show abstract

“…This indicates that in both the ground and excited states, 2,5‐DEAPMC dye molecules are preferentially solvated by solvent 1 (DIO) rather than solvent 2 (ACN). This might be due to cluster formation in solvent 2 (ACN) and more monomeric species in solvent 1 (DIO) .…”

Section: Resultsmentioning

confidence: 99%

Effect of solvents, solvent mixture and silver nanoparticles on photophysical properties of a ketocyanine dye

et al. 2016

View full text Add to dashboard Cite

The effect of solvents of varying polarity and hydrogen bonding ability, solvent mixture and silver nanoparticles on the photophysical properties of a ketocyanine dye, 2,5-di[(E)-1-(4-diethylaminophenyl) methylidine]-1-cyclopentanone (2,5-DEAPMC), is investigated at room temperature. Solvent effect is analyzed using Lippert-Mataga bulk polarity function, Reichardt's microscopic solvent polarity parameter, and Kamlet's and Catalan's multiple linear regression approaches. The spectral properties better follow Reichardt's microscopic solvent polarity parameter than the Lippert-Mataga bulk polarity function. This indicates that both general and specific solute-solvent interactions are operative. Kamlet's and Catalan's multiple linear regression approaches indicate that polarizability/dipolarity solvent influences are greater than hydrogen bond donor and hydrogen bond acceptor solvent influences. The solvatochromic correlations are used to estimate excited state dipole moment using the experimentally determined ground state dipole moment. The excited state dipole moment of the dye is found to be larger than its corresponding ground state dipole moment and ground and excited state dipole moments are not parallel, but subtend an angle of 77°. The absorption and emission spectra are modulated in the presence silver nanoparticles. The fluorescence of 2,5-DEAPMC is quenched by silver nanoparticles. The possible fluorescence quenching mechanisms are discussed. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

Preferential Solvation Studies of 1, 5 Diamino Anthraquinone in Binary Liquid Mixtures

Cited by 22 publications

References 14 publications

Aggregation‐Dependent Chromism and Photopolymerization of Aminoanthraquinone‐Substituted Diacetylenes

Aggregation‐Dependent Chromism and Photopolymerization of Aminoanthraquinone‐Substituted Diacetylenes

Effect of preferential solvation and bimolecular quenching reactions on 3OCE in acetonitrile and 1,4‐dioxane binary mixtures by optical absorption and fluorescence studies

Effect of solvents, solvent mixture and silver nanoparticles on photophysical properties of a ketocyanine dye

Contact Info

Product

Resources

About