Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 118, Issue 46, Pages 13279-13289Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp5079339
Keywords
-
Categories
Funding
- UGC
Ask authors/readers for more resources
Supramolecular interaction between an intramolecular charge transfer (ICT) probe, N,N-dimethylaminonaphthyl-(acrylo)-nitrile (DMANAN), and two well-recognized macrocyclic hosts, cucurbit[7]uril (CB7) and beta-cyclodextrin (beta-CD), has been studied in aqueous medium by absorption, emission, time-resolved measurements, and H-1 NMR spectroscopic methods. The changes in the profiles of the fluorescence spectra illustrate significant modifications in fluorescence intensity, decay time, and quantum yield upon confinement of probe within the hydrophobic cavity of the hosts. Using the BenesiHildebrand relationship, the stoichiometric ratio as well as the binding constant of the hostguest complexation has been estimated. The stable inclusion complexes of the probe with different hosts have been supported by DFT and ONIOM based quantum chemical calculations. These methods of measurement establish that the acceptor group of the probe resides inside the hydrophobic cavity of the macrocycle. The competitive binding of metal ions and cationic surfactants to CB7 has been excellently mapped with this guest fluorosensor.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available