Nickel(II)-Induced Excimer Formation of a Naphthalene-Based Fluorescent Probe for Living Cell Imaging
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https://figshare.com/articles/dataset/Nickel_II_Induced_Excimer_Formation_of_a_Naphthalene_Based_Fluorescent_Probe_for_Living_Cell_Imaging/2521084
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资源简介：
Ni2+-induced intramolecular excimer formation
of a naphthalene-based
novel fluorescent probe, 1-[(naphthalen-3-yl)methylthio]-2-[(naphthalen-6-yl)methylthio]ethane
(L), has been investigated for the first time and nicely
demonstrated by excitation spectra, a fluorescence lifetime experiment,
and 1H NMR titration. The addition of Ni2+ to
a solution of L (DMSO:water = 1:1, v/v; λem = 345 nm, λex = 280 nm) quenched its monomer emission,
with subsequent enhancement of the excimer intensity (at 430 nm) with
an isoemissive point at 381 nm. The fluorescence lifetime of free L (0.3912 ns) is much lower than that of the nickel(2+) complex
(1.1329 ns). L could detect Ni2+ as low as
1 × 10–6 M with a fairly strong binding constant,
2.0 × 104 M–1. Ni2+-contaminated
living cells of plant origin could be imaged using a fluorescence
microscope.
创建时间：
2016-02-20
