Complete Solvation Dynamics of Coumarin 153 in Tetraalkylammonium Bromide-Based Deep Eutectic Solvents

2020 ◽  
Vol 124 (12) ◽  
pp. 2473-2481
Author(s):  
Sk Saddam Hossain ◽  
Sneha Paul ◽  
Anunay Samanta
Keyword(s):  
Deep Eutectic Solvents ◽  
Solvation Dynamics ◽  
Tetraalkylammonium Bromide ◽  
Coumarin 153

Probing the Structural Features and the Micro-heterogeneity of Various Deep Eutectic Solvents and their Water Dilutions by the Photophysical Behaviour of Two Fluorophores

2020 ◽  
Author(s):  
Matteo Tiecco ◽  
Irene Di Guida ◽  
Pier Luigi Gentili ◽  
Raimondo Germani ◽  
Carmela Bonaccorso ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Deep Eutectic Solvents ◽  
Structural Features ◽  
Solvation Dynamics ◽  
Structured Systems ◽  
Reduced Viscosity ◽  
Bond Network ◽  
Fluorescent Molecules

<div><div><div><p>The structural features of a series of diverse Deep Eutectic Solvents (DESs) have been investigated and characterized by means of two fluorescent probes. The spectral and photophysical properties of the latter are strictly dependent on the experienced environment, so that they can provide insights into the polarity, viscosity, hydrogen-bond network, and micro-heterogeneity of the various DESs.</p><p>In fact, the investigated DESs exhibit a variety of properties with regards to their hydrophilicity, acidity, and hydrogen-bond ability, and these details were deeply probed by the two fluorescent molecules. The effect of the addition of water, which is a key strategy for tuning the properties of these structured systems, was also tested. In particular, the excited state dynamics of the probes, measured by femtosecond-resolved transient absorption, proved instrumental in understanding the changes in the structural properties of the DESs, namely reduced viscosity and enhanced heterogeneity, as the water percentage increases. Differences between the various DESs in terms of both local microheterogeneity and bulk viscosity also emerged from the peculiar multi-exponential solvation dynamics undergone by the excited states of the probes.</p></div></div></div>

Probing the Structural Features and the Micro-heterogeneity of Various Deep Eutectic Solvents and their Water Dilutions by the Photophysical Behaviour of Two Fluorophores

2020 ◽  
Author(s):  
Matteo Tiecco ◽  
Irene Di Guida ◽  
Pier Luigi Gentili ◽  
Raimondo Germani ◽  
Carmela Bonaccorso ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Deep Eutectic Solvents ◽  
Structural Features ◽  
Solvation Dynamics ◽  
Structured Systems ◽  
Reduced Viscosity ◽  
Bond Network ◽  
Fluorescent Molecules

<div><div><div><p>The structural features of a series of diverse Deep Eutectic Solvents (DESs) have been investigated and characterized by means of two fluorescent probes. The spectral and photophysical properties of the latter are strictly dependent on the experienced environment, so that they can provide insights into the polarity, viscosity, hydrogen-bond network, and micro-heterogeneity of the various DESs.</p><p>In fact, the investigated DESs exhibit a variety of properties with regards to their hydrophilicity, acidity, and hydrogen-bond ability, and these details were deeply probed by the two fluorescent molecules. The effect of the addition of water, which is a key strategy for tuning the properties of these structured systems, was also tested. In particular, the excited state dynamics of the probes, measured by femtosecond-resolved transient absorption, proved instrumental in understanding the changes in the structural properties of the DESs, namely reduced viscosity and enhanced heterogeneity, as the water percentage increases. Differences between the various DESs in terms of both local microheterogeneity and bulk viscosity also emerged from the peculiar multi-exponential solvation dynamics undergone by the excited states of the probes.</p></div></div></div>

Solvation dynamics of coumarin 153 in several classes of ionic liquids: cation dependence of the ultrafast component

2003 ◽  
Vol 381 (3-4) ◽  
pp. 278-286 ◽  
Author(s):  
S Arzhantsev ◽  
N Ito ◽  
M Heitz ◽  
M Maroncelli
Keyword(s):  
Ionic Liquids ◽  
Solvation Dynamics ◽  
Coumarin 153

Temperature Dependence of Anisotropy Decay and Solvation Dynamics of Coumarin 153 in γ-Cyclodextrin Aggregates

2005 ◽  
Vol 109 (33) ◽  
pp. 7359-7364 ◽  
Author(s):  
Durba Roy ◽  
Sudip Kumar Mondal ◽  
Kalyanasis Sahu ◽  
Subhadip Ghosh ◽  
Pratik Sen ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Solvation Dynamics ◽  
Coumarin 153 ◽  
Anisotropy Decay

Computer simulations of the solvation dynamics of Coumarin 153 in dimethylsulfoxide

2003 ◽  
Vol 370 (5-6) ◽  
pp. 683-689 ◽  
Author(s):  
Lucimara R. Martins ◽  
Munir S. Skaf
Keyword(s):  
Computer Simulations ◽  
Solvation Dynamics ◽  
Coumarin 153

scholarly journals Solute rotation and solvation dynamics in deep eutectic solvents

2021 ◽  
Vol 3 ◽  
pp. 100043
Author(s):  
Sk Saddam Hossain ◽  
Anunay Samanta
Keyword(s):  
Deep Eutectic Solvents ◽  
Solvation Dynamics

Solvation dynamics and rotation of coumarin 153 in a new ionic liquid/molecular solvent mixture model: [BMIM][TFSI]/propylene carbonate

2017 ◽  
Vol 226 ◽  
pp. 48-55 ◽  
Author(s):  
Yevheniia Smortsova ◽  
François-Alexandre Miannay ◽  
Hanna Oher ◽  
Bogdan Marekha ◽  
Julien Dubois ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mixture Model ◽  
Propylene Carbonate ◽  
Solvent Mixture ◽  
Solvation Dynamics ◽  
Coumarin 153
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