Fluorescence Color Change of a Boron-Substituted Diarylazomethine by Reaction with a Cyanide Ion

2010 ◽  
Vol 83 (10) ◽  
pp. 1185-1187 ◽  
Author(s):  
Junro Yoshino ◽  
Naokazu Kano ◽  
Takayuki Kawashima
Keyword(s):  
Color Change ◽  
Cyanide Ion ◽  
Fluorescence Color

Fluorescence Color Change of Aggregation-Induced Emission of 4-[Bis(4-methylphenyl)amino]benzaldehyde

ChemPhysChem ◽  
2013 ◽  
Vol 14 (17) ◽  
pp. 3898-3901 ◽  
Author(s):  
Motoki Kurita ◽  
Mika Momma ◽  
Kei Mizuguchi ◽  
Hideyuki Nakano
Keyword(s):  
Color Change ◽  
Aggregation Induced Emission ◽  
Fluorescence Color

scholarly journals Desing of optical chemosensors for detection of cyanide ions in water environments

2019 ◽  
Vol 15 (1) ◽  
pp. 82-87
Author(s):  
Alexandra Alexandrovna Kudrevatykh ◽  
Lyubov Stepanovna Klimenko ◽  
Timofey Petrovich Martyanov
Keyword(s):  
Aqueous Medium ◽  
Absorption Spectra ◽  
Stability Constants ◽  
Molecular Interactions ◽  
Color Change ◽  
Cyanide Ion ◽  
Colorimetric Test ◽  
Optical Chemosensors ◽  
Aqueous Mixture ◽  
The Stability

Molecular interactions with various anions in the form of tetrabutylammonium salts in DMSO and DMSO-aqueous mixture were studied spectrophotometrically. It turned out that the solutions of 1-hydroxy-2-acylaminoanthraquinones in DMSO, originally yellow, became dark purple with the addition of cyanide, fluoride, phosphate, and acetate ions. The addition of other salts did not cause changes in the absorption spectra. When switching to aqueous DMSO, a contrasting color change in the solution was observed only with the addition of the cyanide ion. The stability constants of the complexes and the metrological characteristics of the processes were determined. On the basis of 1hydroxy-2-benzoylaminoanthraquinone, colorimetric test strips were made and tested for the detection of CN-ions in an aqueous medium.

Ultra‐pH‐Sensitive Small Molecule Probe Showing a Ratiometric Fluorescence Color Change

ChemPhotoChem ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 393-397 ◽  
Author(s):  
Junjie Cui ◽  
Gayoung Kim ◽  
Sehoon Kim ◽  
Ji Eon Kwon ◽  
Soo Young Park
Keyword(s):  
Small Molecule ◽  
Color Change ◽  
Ph Sensitive ◽  
Ratiometric Fluorescence ◽  
Fluorescence Color ◽  
Small Molecule Probe

A confined carbon dot-based self-calibrated fluorescence probe for visible and high-sensitivity moisture readouts

2021 ◽  
Author(s):  
Zhong-Zheng Ding ◽  
Guang-Song Zheng ◽  
Qing Lou ◽  
Jiang-Fan Han ◽  
Meng-Yuan Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Potential Role ◽  
Fluorescence Probe ◽  
Color Change ◽  
High Sensitivity ◽  
Confinement Effect ◽  
Detection Range ◽  
Fluorescence Color ◽  
Highly Sensitive ◽  
New Type

Abstract Excellent luminescent materials are essential for high-performance fluorescent nanosensors. Here, a new-type self-calibrated humidity sensor has been established through monitoring the fluorescent color change of carbon dots (CDs) confined in sodium hydroxide (CDs@NaOH). The CDs are prepared by a facile and rapid microwave assisted heating method using citric acid, urea, and NaOH as precursors. The confinement effect from NaOH has reduced the nonradiative transition and suppressed the aggregation-induced quenching of the CDs in solid. Compared with other sensors based on CD fluorescent visualization, the sensor has good linearity and wide humidity detection range from 6.9% to 95.4%. With the increased relative humidity, the fluorescence color of the sensor change from green to blue. The proposed sensing mechanism is due to the breaking and reforming of hydrogen bonds and proton transfer occurring at the CD-NaOH matrix interfaces. This finding suggests a potential role for the spatial confinement effect and may provide an avenue for developing highly sensitive humidity readouts.

Reversible Thermal-Induced Fluorescence Color Change of Tetraphenylethylene-Labeled Nylon-6

2018 ◽  
Vol 6 (6) ◽  
pp. 1701149 ◽  
Author(s):  
Jiaru Xu ◽  
Wenxi Ji ◽  
Chao Li ◽  
Yufeng Lv ◽  
Zijie Qiu ◽  
...  
Keyword(s):  
Color Change ◽  
Nylon 6 ◽  
Fluorescence Color

scholarly journals Probing DNA sequences in solution with a monomer-excimer fluorescence color change

1998 ◽  
Vol 26 (16) ◽  
pp. 3789-3793 ◽  
Author(s):  
P. L. Paris ◽  
J. M. Langenhan ◽  
E. T. Kool
Keyword(s):  
Dna Sequences ◽  
Color Change ◽  
Excimer Fluorescence ◽  
Fluorescence Color

Photoresponsive Fluorescence Color Change Derived from TICT in an Organogel System

2008 ◽  
Vol 37 (9) ◽  
pp. 912-913 ◽  
Author(s):  
Tatsuya Kitahara ◽  
Norifumi Fujita ◽  
Seiji Shinkai
Keyword(s):  
Color Change ◽  
Fluorescence Color

Smart Fluorescent Nanoparticles in Water Showing Temperature-Dependent Ratiometric Fluorescence Color Change

2017 ◽  
Vol 9 (3) ◽  
pp. 2883-2890 ◽  
Author(s):  
Junjie Cui ◽  
Ji Eon Kwon ◽  
Hyeong-Ju Kim ◽  
Dong Ryeol Whang ◽  
Soo Young Park
Keyword(s):  
Color Change ◽  
Fluorescent Nanoparticles ◽  
Ratiometric Fluorescence ◽  
Temperature Dependent ◽  
Fluorescence Color
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