Chen Chunyang

Suzhou University of Science and Technology · Department of Environmental Science and Engineering

Herein, we designed/developed a mixed fluorescence system with europium metal-organic framework (EDB) and zinc metal-organic framework (ZBNB). At the 270-nm excitation wavelength, the EDB-ZBNB dually emitted at 425 and 615 nm and displayed blue solution under 365-nm UV lamp. When HOCl was fortified, the 425-nm blue emission dropped progressively, w...

Here is reported effervescent reaction-enhanced switchable hydrophilic-hydrophobic solvent-based salting-out microextraction (ERSSM) with high-performance liquid chromatography with photodiode array detection (HPLC-PDA) for the preconcentration, extraction, and trace-level determination of polybrominated diphenyl ethers (PBDEs) in milk and water. T...

Gold ions have high activity and cytotoxicity completely different from elemental gold. It is necessary and critical to develop Au³⁺ detection tools that are easy to operate, intuitive, inexpensive, and non-destructive testing. Here, we propose a novel two-photon fluorescent probe named DA for detecting Au³⁺, which is a rare combination of dicoumar...

Ultraviolet light (UV light) was broadly utilized as persulfate activation source in advanced oxidation process to degrade contaminants in water due to its simple operation and environmental protection. In this paper, the degradation of ciprofloxacin (CIP) was investigated with peroxodisulfate (PDS) as oxidant and UV light as PDS activation source...

The key biological thiol, cysteine (Cys), which can participate in many physiological and pathological processes in the human body, has also been proved to have considerable effects on redox homeostasis and the regulation of cell activity in vivo. A large number of studies have shown that abnormal Cys concentration is inseparable from the occurrenc...

It is momentous to exploit rapid, specific and on-site detection methods for mercury ion (Hg²⁺) in loess, as the severe toxicity of Hg²⁺ and the fragile ecological environment of Loess Plateau. In this paper, a novel fluorescent probe DC-Hg (Dicoumarin-Hg) was synthesized by 3-hydroxybiscoumarin and phenyl thiochloroformate at room temperature. DC-...

Link-anthocyanin as a novel fluorophore, is formed by addition a restriction group to anthocyanin, which lead the good two-photon performance and excellent water solubility of link-anthocyanin. The probe (Probe) which based on link-anthocyanin was designed and synthesized by a simple 2-step procedure. Probe has high emission wavelength (620 nm), lo...

From the perspective of efficient and economical utilization of materials, it is very meaningful to achieve multifunctional performance in its assembly process, and this is also the future development trend of MOF materials. As an important type of intermolecular interaction, hydrogen bonding is widely used in supramolecular self-assembly, molecula...

A catalytic fluorescent probe based on V-shaped bis-coumarin has been designed and synthesized for detection of palladium (Pd). The detection mechanism of the probe is based on palladium-catalyzed Tsuji‒Trost reaction process and photoinduced electron transfer (PET), which can distinguish and detect palladium (0, +2/+4) in different valence states...

In order to achieve the goal of convenient and efficient detection of picric acid in a water environment, based on function-oriented research ideas, we combine luminescence performance with recognition performance, taking into account the application conditions. Urea sites with picric acid selective recognition properties and lanthanide ions with l...

Considering size effect and functionalized pore interaction dyes guests and MOFs hosts, 4‐aminonaphthalimide was successfully introduced into the pore of LnMOF for the first time and constructed 4‐ANA⊂LnMOF luminescent composites with excellent dual‐emission properties. A series of temperature‐dependent luminescence test results show that 4‐ANA⊂Gd4...

Two novel lanthanide metal–organic framework (Ln‐MOF) luminescent sensors for the detection of picric acid have been successfully assembled. Following a function‐oriented strategy, urea hydrogen‐bonding functional sites were introduced into two MOF frameworks. A structural analysis indicated that the two MOFs have the exact same structure, namely 2...

Lanthanide coordination polymers (Ln-CPs) ([Eu(L)2(H2O)]Br·H2O)n (EuBr) and ([TbL2(H2O)2]Br·H2O)n (TbBr) have been synthesised and photoluminescence studies revealed that EuBr and TbBr exhibit a sensitive and fast luminescence quenching response to Fe³⁺ and picric acid (PA). The quenching effect constant (Ksv) of EuBr for Fe³⁺ can reach 3974 M⁻¹ an...

A novel turn-on fluorescent probe, which coumarin-fused coumarin was used as fluorophore to link with 2, 4- dinitrodiphenyl ether moiety that has high selectivity and sensitivity for H2S and thiols, was designed and synthesized. Our probe YB can sensitively react with H2S and GSH to release free fluorophore with strong fluorescence signals. The pro...

Coumarinocoumarin, one of the coumarin derivatives, is easy to synthesize and have rich modification sites. The large conju-gate plane of coumarinocoumarin make it has more excellent optical property than conventional coumarin, for example, the two-photon fluorescence property. So, the coumarinocoumarin-based probe (CCy) has been designed and synth...

Due to the good biological properties of coumarinocoumarin and the importance of cysteine (Cys) in organism, a novel coumarinocoumarin-based probe (CCx) has been designed and synthesized for detecting intracellular Cys. CCx was prepared from salicylaldehyde by a simple 3-step procedure as a latent fluorescence probe to achieve large Stocks shift (9...

A lesson about luminescent Ln-MOFs: A new microporous luminescencent Eu-MOF based on an urea-containing ligand was successfully assembled. The Ln-MOF exhibits a high sensitivity, good selectivity, and a fast luminescence-quenching response towards Fe³⁺, CrVI anions, and picric acid. Especially in the detection of Cr2O7²⁻ and picric acid, the Ln-MOF...

A new rapid and highly sensitive coumarin-based probe (probe 1) has been designed and synthesized for detecting intracellular thiols. Probe 1 was prepared by a 4-step procedure as a latent fluorescence probe to achieve high sensitivity and fluorescence turn-on response toward cysteine and homocysteine over GSH and other various natural amino acids...

Nine new isostructural 2D lanthanide(III) coordination polymers (Ln-CPs) with a general formula of {[Ln(Bcpi)2(H2O)]BrxCl1–x·(H2O)}n {Ln = Eu (1–3), Tb (4–6) and Gd (7–9); x = 0, 0.5, 1; Bcpi = 1,3-bis(4-carboxyphenyl)imidazolium} were synthesized by hydrothermal reactions and fully characterized. Single-crystal X-ray structural analysis revealed t...

A new rapid and highly sensitive coumarin-based probe (probe 1) has been designed and synthesized for detecting intracellular GSH. Probe 1 was prepared from 4-methylumbelliferone using a 3-step procedure. It was converted into a latent fluorescence probe, which allowed it to achieve high sensitivity (LOD 122nM) and fluorescence turn-on response (F/...

A new and simple fluorescent chemodosimeter, 7-ally1-2-methylquinolin-8-ol, has been synthesized for resumable detection of Hg2+. The chemodosimeter displays a highly sensitive and selective response to Hg2+ with remarkably fluorescence intensity enhanced in aqueous solution containing 0.2% organic cosolvent. Moreover, this resumable chemodosimeter...

A novel water-soluble colorimetric and ratiometric fluorescent probe was synthesized and applied to imaging palladium species under physiological conditions in phosphate buffered saline (PBS) containing less than 1% organic cosolvent without adding any additional reagents. Based on palladium triggered terminal propargyl ethers cleavage reaction, th...

A new fluorescence probe was developed for hydrogen peroxide (H2O2) detection based on donor-excited photo induced electron transfer (D-PET) mechanism, together with the benzil as a quenching and recognizing moiety. The benzil could convert to benzoic anhydride via a Baeyer-Villiger type reaction in the presence of H2O2, followed by hydrolysis of b...

A merocyanine-based highly selective colorimetric and ratiometric fluorescent probe is described for Cys detection in water and diluted deproteinized human serum. Upon reaction with Cys in aqueous buffer solution, the probe showed a dramatic color change from faint yellow to pink and remarkable ratiometric fluorescence enhancement signals were also...

The solid-state luminescence behaviors of a compound (BAPN) depend on the molecular aggregation pattern. Modular analysis shows that the two emitting systems within the BAPN molecule are responsible for switching the emission color in various aggregation states.

A fluorescent sensor, N-(quinolin-8-yl)-2-(quinolin-8-yloxy)acetamide (HL), based on 8-aminoquinoline and 8-hydroxyquinoline platforms has been synthesized. This sensor displays high selectivity and sensitive fluorescence enhancement to Cd(2+) in ethanol. Moreover, sensor HL can distinguish Cd(2+) from Zn(2+) via two different sensing mechanisms (p...

A new 1,3,4-oxadiazole-based fluorescence chemosensor 1, N-(2-ethoxy-2-oxoethyl)-N-(5-(2-hydroxy-3,5-di-tert-butylphenyl)-[1,3,4]oxadiazol-2-yl)glycine ethyl ester, has been designed and synthesized. Its fluorescence properties and selectivity for various metal ions were investigated in detail. A prominent fluorescence enhancement only for Zn(2+) w...