Construction of NIR luminescent polynuclear lanthanide-based nanoclusters with sensing properties towards metal ions

2018 ◽  
Vol 47 (39) ◽  
pp. 13880-13886 ◽  
Author(s):  
Hongfen Chen ◽  
Xiaoping Yang ◽  
Dongmei Jiang ◽  
Dongliang Shi ◽  
Lijie Zhang
Keyword(s):  
Metal Ions ◽  
High Sensitivity ◽  
Sensing Properties ◽  
Ppm Level ◽  
Luminescent Sensing

Two types of 4- and 9-metal lanthanide-based nanoclusters (Ln = Yb(iii) and Er(iii)) were constructed and the 9-metal Yb(iii) cluster shows interesting luminescent sensing of metal ions and exhibits high sensitivity to Cd2+ and Co2+ at ppm level.

NIR luminescence for the detection of metal ions and nitro explosives based on a grape-like nine-nuclear Nd(iii) nanocluster

2019 ◽  
Vol 6 (2) ◽  
pp. 550-555 ◽  
Author(s):  
Hongfen Chen ◽  
Xiaoping Yang ◽  
Dongmei Jiang ◽  
Desmond Schipper ◽  
Richard A. Jones
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Metal Cations ◽  
High Sensitivity ◽  
Nitro Explosives ◽  
Ppm Level ◽  
Nir Luminescence ◽  
Luminescent Sensing

A Nd(iii) nanocluster with long Schiff base ligand shows interesting NIR luminescent sensing of both metal cations and nitro explosives, and exhibits high sensitivity to Cd2+, Zn2+, Cu2+, Co2+ ions and explosive HMX at the ppm level.

Cation sensing by luminescent high-nuclearity Zn–Eu Schiff base nanoscale complexes: high sensitivity to Ag+ and Cd2+ ions at the ppm level

2019 ◽  
Vol 48 (6) ◽  
pp. 2206-2212 ◽  
Author(s):  
Dongmei Jiang ◽  
Xiaoping Yang ◽  
Hongfen Chen ◽  
Fei Wang ◽  
Shiqing Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Cations ◽  
High Sensitivity ◽  
Schiff Base Ligands ◽  
Cation Sensing ◽  
Ppm Level ◽  
Luminescent Sensing

Two types of Zn–Ln nanoscale complexes were constructed using Schiff base ligands, and the 12-metal Zn–Eu complex shows interesting luminescent sensing of metal cations.

scholarly journals Detection of metal ions in biological systems: A review

2020 ◽  
Vol 39 (1) ◽  
pp. 231-246 ◽  
Author(s):  
Xian Zheng ◽  
Wenyu Cheng ◽  
Chendong Ji ◽  
Jin Zhang ◽  
Meizhen Yin
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Metabolic Regulation ◽  
Organic Dyes ◽  
Biological Systems ◽  
High Sensitivity ◽  
Transportation Energy ◽  
Material Transportation ◽  
High Fluorescence ◽  
Metal Ion Detection

Abstract Metal ions are widely present in biological systems and participate in many critical biochemical processes such as material transportation, energy conversion, information transmission and metabolic regulation, making them indispensable substance in our body. They can cause health problems when deficiency or excess occurs. To understand various metabolic processes and facilitate diseases diagnosis, it is very important to measure the content and monitor the distribution of metal ions in individual cells, tissues and whole organisms. Among the various methods for metal ion detection, fluorescent sensors with organic dyes have attracted tremendous attention due to many advantages such as high fluorescence quantum yield, facile modification approaches and biocompatibility in addition to operation ease, high sensitivity, fast detection speed, and real-time detection. This review summarizes the recent progress on the detection and imaging of the metal ions in biological systems including Na+, K+, Ca2+, Mg2+, Fe2+/Fe3+, Zn2+, and Cu2+ provides an opinion on remaining challenges to be addressed in this field.

A phthalocyanine-based fluorescent sensor for Zn2+ ion

2013 ◽  
Vol 17 (01n02) ◽  
pp. 99-103 ◽  
Author(s):  
Hui He ◽  
Jian-Yong Liu ◽  
Dennis K.P. Ng
Keyword(s):  
Metal Ions ◽  
Spectral Properties ◽  
Fluorescence Spectra ◽  
Near Infrared ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Absorption And Fluorescence Spectra

This paper describes the preparation and spectral properties of a near-infrared fluorophore in which two bis(2-picolyl)amino moieties are axially linked to a silicon(IV) phthalocyanine core. The effects of various metal ions on its absorption and fluorescence spectra have been examined. The results indicate that this compound shows a high sensitivity and moderate selectivity toward Zn2+ ion.

Polyaniline/SnO2 Nanocomposite Sensor for NO2 Gas Sensing at Low Operating Temperature

2015 ◽  
Vol 14 (04) ◽  
pp. 1550011 ◽  
Author(s):  
A. Sharma ◽  
M. Tomar ◽  
V. Gupta ◽  
A. Badola ◽  
N. Goswami
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Chemical Route ◽  
Sensing Properties ◽  
Response Recovery ◽  
Transmission Electron ◽  
Gas Sensing Properties

In this paper gas sensing properties of 0.5–3% polyaniline (PAni) doped SnO 2 thin films sensors prepared by chemical route have been studied towards the trace level detection of NO 2 gas. The structural, optical and surface morphological properties of the PAni doped SnO 2 thin films were investigated by performing X-ray diffraction (XRD), Transmission electron microscopy (TEM) and Raman spectroscopy measurements. A good correlation has been identified between the microstructural and gas sensing properties of these prepared sensors. Out of these films, 1% PAni doped SnO 2 sensor showed high sensitivity towards NO 2 gas along with a sensitivity of 3.01 × 102 at 40°C for 10 ppm of gas. On exposure to NO 2 gas, resistance of all sensors increased to a large extent, even greater than three orders of magnitude. These changes in resistance upon removal of NO 2 gas are found to be reversible in nature and the prepared composite film sensors showed good sensitivity with relatively faster response/recovery speeds.

B- and P-Doped Si0.8Ge0.2 Thin Film Deposited by Helicon Sputtering for the Micro-Thermoelectric Gas Sensor

2006 ◽  
Vol 320 ◽  
pp. 99-102 ◽  
Author(s):  
Kazuki Tajima ◽  
Woosuck Shin ◽  
Maiko Nishibori ◽  
Norimitsu Murayama ◽  
Toshio Itoh ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrogen Oxidation ◽  
Exothermic Reaction ◽  
High Sensitivity ◽  
Hydrogen Sensor ◽  
Thermoelectric Effect ◽  
Boron Doped ◽  
Reliable Monitoring ◽  
Ppm Level ◽  
Pt Catalyzed

Micro-thermoelectric hydrogen sensor (micro-THS) with the combination of the thermoelectric effect of Si0.8Ge0.2 thin film and the Pt-catalyzed exothermic reaction of hydrogen oxidation was prepared by microfabrication process. In the viewpoint of high sensitivity of micro-THS, the thermoelectric properties of the Si0.8Ge0.2 thin film could be improved by optimizing carrier concentration using helicon sputtering with an advantage of easy doping control, and sensitivity of the device with this thin film was investigated. As the result, the boron-doped Si0.8Ge0.2 thin film is considered to be the better choice ensuring the reliable monitoring of hydrogen concentration down to ppm level.

A metal-organic framework featuring highly sensitive fluorescence sensing for Al3+ ion

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yang Qiao ◽  
Zeqi Li ◽  
Mei-Hui Yu ◽  
Ze Chang ◽  
Xian-He Bu
Keyword(s):  
Metal Ions ◽  
Human Health ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Fluorescence Sensing ◽  
Sensing Material ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Organic Framework

High sensitivity and selectivity for detection of metal ions are very important to protect human health. Fluorescent metal-organic framework (MOF) as a new sensing material has attracted more and more...

Construction of a 1-D Sm(iii) coordination polymer with a long-chain Schiff base ligand: dual-emissive response to metal ions

2020 ◽  
Vol 7 (2) ◽  
pp. 464-469 ◽  
Author(s):  
Jieni Liu ◽  
Ting Zhu ◽  
Xiaoping Yang ◽  
Hongfen Chen ◽  
Dongliang Shi ◽  
...  
Keyword(s):  
Schiff Base ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Ppm Level ◽  
Long Chain

A 1-D coordination polymer [Sm(HL)2(NO3)]n was constructed using a new flexible Schiff base ligand that has a long-chain (CH2)10 backbone, and it shows dual-emissive response to metal ions, especially to Co2+ at the ppm level.

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