Solvation Dynamics of the Fluorescent Probe PRODAN in Heterogeneous Environments: Contributions from the Locally Excited and Charge-Transferred States

2009 ◽  
Vol 113 (35) ◽  
pp. 11999-12004 ◽  
Author(s):  
Ramkrishna Adhikary ◽  
Charles A. Barnes ◽  
Jacob W. Petrich
Keyword(s):  
Fluorescent Probe ◽  
Heterogeneous Environments ◽  
Solvation Dynamics ◽  
Locally Excited

A sensitive fluorescent probe for the polar solvation dynamics at protein–surfactant interfaces

2017 ◽  
Vol 19 (19) ◽  
pp. 12237-12245 ◽  
Author(s):  
Priya Singh ◽  
Susobhan Choudhury ◽  
Subhankar Singha ◽  
Yongwoong Jun ◽  
Sandipan Chakraborty ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Fluorescent Probe ◽  
Solvation Dynamics ◽  
Relaxation Dynamics ◽  
Polar Solvation

Relaxation dynamics at the surface of biologically important macromolecules is important taking into account their functionality in molecular recognition.

DNA stabilized silver nanoclusters as the fluorescent probe for studying the structural fluctuations and the solvation dynamics of human telomeric DNA

2015 ◽  
Vol 39 (3) ◽  
pp. 2140-2145 ◽  
Author(s):  
Hung-Chi Hsu ◽  
Meng-Chieh Ho ◽  
Kai-Hung Wang ◽  
Ying-Feng Hsu ◽  
Chih-Wei Chang
Keyword(s):  
Fluorescent Probe ◽  
Silver Nanoclusters ◽  
Solvation Dynamics ◽  
Telomeric Dna ◽  
Structural Fluctuation ◽  
Structural Fluctuations

Silver nanoclusters can be utilized as a fluorescent probe for studying the structural fluctuation and the solvation dynamics of human telomeric DNA.

Discussion following the presentation by F. Deubner

1977 ◽  
Vol 36 ◽  
pp. 69-74
Keyword(s):  
List Type ◽  
The Sun ◽  
Type Number ◽  
Harmonic Motion ◽  
Locally Excited ◽  
Long Period ◽  
Coherent Wave ◽  
Short Period ◽  
Global Modes

The discussion was separated into 3 different topics according to the separation made by the reviewer between the different periods of waves observed in the sun :1) global modes (long period oscillations) with predominantly radial harmonic motion.2) modes with large coherent - wave systems but not necessarily global excitation (300 s oscillation).3) locally excited - short period waves.

A Boronic Acid-Based Fluorescence Hydrogel for Monosaccharide Detection

2018 ◽  
Author(s):  
Suying Xu ◽  
Adam Sedgwick ◽  
Souad Elfecky ◽  
Wenbo Chen ◽  
Ashley Jones ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Boronic Acid ◽  
Binding Constants ◽  
Strong Fluorescence ◽  
Fluorescence Response ◽  
Turn On ◽  
Fluorescence Turn On ◽  
Hydrogel System

<p>A boronic acid-based anthracene fluorescent probe was functionalised with an acrylamide unit to incorporate into a hydrogel system for monosaccharide detection<i>. </i>In solution, the fluorescent probe<b> </b>displayed a strong fluorescence turn-on response upon exposure to fructose, and an expected trend in apparent binding constants, as judged by a fluorescence response where D-fructose > D-galactose > D-mannose > D-glucose. The hydrogel incorporating the boronic acid monomer demonstrated the ability to detect monosaccharides by fluorescence with the same overall trend as the monomer in solution with the addition of fructose resulting in a 10-fold enhancement (≤ 0.25 M). <b><u></u></b></p>

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>

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