Topic
Naked eye
About: Naked eye is a research topic. Over the lifetime, 1342 publications have been published within this topic receiving 34880 citations. The topic is also known as: bare eye & unaided eye.
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TL;DR: The design, synthesis, and the photophysical properties of a Low Molecular Weight Gel based on AB(3) and AB(2) type poly(aryl ether) dendrons with an anthracene chromophore attached through an acylhydrazone linkage are described.
162 citations
TL;DR: A novel on/off fluorescent rhodamine-based hexapodal Fe(3+) probe (L) containing a cyclotriphosphazene core was synthesized by an azide-alkyne "click-reaction" to test the reusability and stoichiometry of the sensor.
Abstract: A novel on/off fluorescent rhodamine-based hexapodal Fe3+ probe (L) containing a cyclotriphosphazene core was synthesized by an azide–alkyne “click-reaction”. The synthesized compounds (1–5 and L) were characterized by FT-IR; 1H, 13C, and 31P NMR; and MALDI MS spectrometry. The optical sensor features for the Fe3+ complex of L were investigated by UV–vis and fluorescence spectroscopy. The stoichiometry of L–Fe3+ complex was found to be 1:3 (ligand/metal ion), and the detection limit of L was determined as 4.8 μM (0.27 mg L–1) for Fe3+ ions. The reusability of the sensor was tested by the addition of ethylenediamine to L–Fe3+ complex solutions followed by the addition of Fe3+ solution.
158 citations
TL;DR: An example of the new simple, low cost, highly water soluble, and sensitive turn-on fluorescent Zn(2+) chemosensor is described and the color change is so obvious that all of the recycling process can be seen clearly by the naked eye.
151 citations
TL;DR: A new fluorescent Pd2+ sensor, N-butyl-4-(p-methyloxy)-phenylethynyl-5-thiophenemethylamino-1,8-naphthalimide, was designed and synthesized and showed highly selective on-off fluorescence changes for Pd 2+ among the representative transition and heavy metallic cations.
150 citations
TL;DR: A new ratiometric colorimetric chemodosimeter toward cyanide anion was designed and synthesized by using intramolecular charge transfer (ICT) as a signaling mechanism and displayed apparent color changes from deep red to light yellow, which could be observed by naked eyes.
Abstract: Taking advantages of both the well-known azobenzene structure and the special nucleophilicity of cyanide toward the acceptor moiety, a new ratiometric colorimetric chemodosimeter (Azo-1) toward cyanide anion was designed and synthesized by using intramolecular charge transfer (ICT) as a signaling mechanism. Upon the addition of CN– anion, the probe displayed apparent color changes from deep red to light yellow, which could be observed by naked eyes. With the aid of the UV–vis spectrometer, the detection limit could be as low as 1.1 μM. The probe possessed high selectivity for cyanide with respect to other common anions. In addition, Azo-1 could serve as practical colorimetric probe for “in-the-field” measurements that would not require any additional equipment by virtue of “dip-sticks” approach.
150 citations