Imperial College London

DrKimJelfs

Faculty of Natural SciencesDepartment of Chemistry

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 3438k.jelfs Website

 
 
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Location

 

207AMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zwijnenburg:2016:10.1021/acs.jpcb.6b03059,
author = {Zwijnenburg, MA and Berardo, E and Peveler, WJ and Jelfs, KE},
doi = {10.1021/acs.jpcb.6b03059},
journal = {Journal of Physical Chemistry B},
pages = {5063--5072},
title = {Amine molecular cages as supramolecular fluorescent explosive sensors: a computational perspective},
url = {http://dx.doi.org/10.1021/acs.jpcb.6b03059},
volume = {120},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - We investigate using a computational approach the physical and chemical processes underlying the application of organic (macro)molecules as fluorescence quenching sensors for explosives sensing. We concentrate on the use of amine molecular cages to sense nitroaromatic analytes, such as picric acid and 2,4-dinitrophenol, through fluorescence quenching. Our observations for this model system hold for many related systems. We consider the different possible mechanisms of fluorescence quenching: Förster resonance energy transfer, Dexter energy transfer and photoinduced electron transfer, and show that in the case of our model system, the fluorescence quenching is driven by the latter and involves stable supramolecular sensor–analyte host–guest complexes. Furthermore, we demonstrate that the experimentally observed selectivity of amine molecular cages for different explosives can be explained by the stability of these host–guest complexes and discuss how this is related to the geometry of the binding site in the sensor. Finally, we discuss what our observations mean for explosive sensing by fluorescence quenching in general and how this can help in future rational design of new supramolecular detection systems.
AU - Zwijnenburg,MA
AU - Berardo,E
AU - Peveler,WJ
AU - Jelfs,KE
DO - 10.1021/acs.jpcb.6b03059
EP - 5072
PY - 2016///
SN - 1520-6106
SP - 5063
TI - Amine molecular cages as supramolecular fluorescent explosive sensors: a computational perspective
T2 - Journal of Physical Chemistry B
UR - http://dx.doi.org/10.1021/acs.jpcb.6b03059
UR - http://hdl.handle.net/10044/1/33160
VL - 120
ER -