Fluorescence tuning of Zn(ii)-based metallo-supramolecular coordination polymers and their application for picric acid detection

2016 ◽  
Vol 3 (11) ◽  
pp. 1363-1375 ◽  
Author(s):  
Hong-Qing Li ◽  
Zhong-Yu Ding ◽  
Yao Pan ◽  
Chun-Hua Liu ◽  
Yuan-Yuan Zhu
Keyword(s):  
Coordination Polymers ◽  
Picric Acid ◽  
High Sensitivity ◽  
Supramolecular Coordination ◽  
Sensitivity And Selectivity

A series of metallo-supramolecular coordination polymers displayed strong and tunable visible luminescent emission and possessed the capability for detection of picric acid (PA) with high sensitivity and selectivity.

Multidimensional luminescent cobalt(ii)-coordination polymers as sensors with extremely high sensitivity and selectivity for detection of acetylacetone, benzaldehyde and Cr2O72−

CrystEngComm ◽  
2020 ◽  
Vol 22 (15) ◽  
pp. 2656-2666 ◽  
Author(s):  
Ai-Ling Li ◽  
Yun-Hua Qu ◽  
Lianshe Fu ◽  
Chao Han ◽  
Guang-Hua Cui
Keyword(s):  
Coordination Polymers ◽  
High Sensitivity ◽  
Chain Structure ◽  
Luminescent Probes ◽  
1D Chain ◽  
Sensitivity And Selectivity

Three new ternary cobalt(ii) CPs were synthesized. 1 exhibits a 3D pcu framework, 2 possesses a 2D hcb layer and 3 is a 1D chain structure. 1, 2, and 3 can be effective luminescent probes for sensing acetylacetone, benzaldehyde and Cr2O72− ions.

scholarly journals Fluorescent Calix[4]arene-Carbazole-Containing Polymers as Sensors for Nitroaromatic Explosives

Chemosensors ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 128
Author(s):  
Patrícia D. Barata ◽  
José V. Prata
Keyword(s):  
Density Functional ◽  
Picric Acid ◽  
High Sensitivity ◽  
Functional Theory ◽  
Sensitivity And Selectivity ◽  
Polymer Models ◽  
Photo Induced Electron Transfer ◽  
Experimental Findings ◽  
Detection Of Explosives

Two highly fluorescent calix[4]arene-containing phenylene-alt-ethynylene-carbazolylene polymers (Calix-PPE-CBZs) were used in the detection of explosives from the nitroaromatic compounds (NACs) family, in solution and in vapour phases. Both fluorophores exhibit high sensitivity and selectivity towards NACs detection. The quenching efficiencies in solution, assessed through static Stern-Volmer constants (KSV), follow the order picric acid (PA) >> 2,4,6-trinitrotoluene (TNT) > 2,4-dinitrotoluene > (2,4-DNT) > nitrobenzene (NB). These correlate very well with the NACs electron affinities, as evaluated from their lowest unoccupied molecular orbitals (LUMOs) energies, indicating a photo-induced electron transfer as the dominant mechanism in fluorescence quenching. Moreover, and most interesting, detection of TNT, 2,4-DNT and NB vapours via thin-films of Calix-PPE-CBZs revealed a remarkably sensitive response to these analytes, comparable to state-of-the-art chemosensors. The study also analyses and compares the current results to previous disclosed data on the detection of NACs by several calix[4]arene-based conjugated polymers and non-polymeric calix[4]arenes-carbazole conjugates, overall highlighting the superior role of calixarene and carbazole structural motifs in NACs’ detection performance. Density functional theory (DFT) calculations performed on polymer models were used to support some of the experimental findings.

Schottky diodes based on 2D materials for environmental gas monitoring: a review on emerging trends, recent developments and future perspectives

2021 ◽  
Author(s):  
Minu Mathew ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensing ◽  
2D Materials ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Future Perspectives ◽  
Working Temperature ◽  
Emerging Trends ◽  
Gas Sensing Properties ◽  
Recent Developments ◽  
Sensitivity And Selectivity

This review details the fundamentals, working principles and recent developments of Schottky junctions based on 2D materials to emphasize their improved gas sensing properties including low working temperature, high sensitivity, and selectivity.

Lanthanide coordination polymer-based biosensor for citrate detection in urine

2019 ◽  
Vol 11 (10) ◽  
pp. 1405-1409 ◽  
Author(s):  
Haoshuang Shen ◽  
Baoxia Liu ◽  
Daosheng Liu ◽  
Xu Zhu ◽  
Xiuhua Wei ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
High Sensitivity ◽  
Lanthanide Coordination Polymer ◽  
Sensitivity And Selectivity

GMP ligand based LCP sensor for Cit with high sensitivity and selectivity was constructed.

Luminescent nucleotide/Tb3+ coordination polymer for Fe(ii) detection in human serum

2020 ◽  
Vol 12 (8) ◽  
pp. 1122-1130
Author(s):  
Yan Liu ◽  
Lu-Lu Peng ◽  
Wei-Xiong Huang ◽  
Hui-Zhuo Zhou ◽  
Li Xu
Keyword(s):  
Coordination Polymer ◽  
Human Serum ◽  
Adenosine Triphosphate ◽  
High Sensitivity ◽  
Sensitivity And Selectivity ◽  
Bridge Ligand

A luminescent nucleotide/Tb3+ coordination polymer (CP) was synthesized using adenosine triphosphate (ATP) molecules as a bridge ligand and Phen as a sensitizer, which showed high sensitivity and selectivity for Fe2+.

Efficient chemosensors for toxic pollutants based on photoluminescent Zn(II) and Cd(II) metal-organic networks

2021 ◽  
Author(s):  
Luis David Rosales-Vazquez ◽  
Alejandro Dorazco-González ◽  
Victor Sanchez-Mendieta
Keyword(s):  
Optical Sensors ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Environmental Research ◽  
Toxic Pollutants ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Analytical Tools ◽  
Organic Networks

Optical sensors with high sensitivity and selectivity, as important analytical tools for chemical and environmental research, can be accomplished by straightforward synthesis of luminescent one-, two- and three-dimensional Zn(II) and...

scholarly journals Metal Oxide Nanorods-Based Sensor Array for Selective Detection of Biomarker Gases

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1922
Author(s):  
Gwang Su Kim ◽  
Yumin Park ◽  
Joonchul Shin ◽  
Young Geun Song ◽  
Chong-Yun Kang
Keyword(s):  
Real Time ◽  
Sensor Array ◽  
High Sensitivity ◽  
Gas Analysis ◽  
Diagnostic Methods ◽  
Real Time Monitoring ◽  
Non Invasive ◽  
Sensitivity And Selectivity ◽  
Breath Gas Analysis ◽  
Angle Method

The breath gas analysis through gas phase chemical analysis draws attention in terms of non-invasive and real time monitoring. The array-type sensors are one of the diagnostic methods with high sensitivity and selectivity towards the target gases. Herein, we presented a 2 × 4 sensor array with a micro-heater and ceramic chip. The device is designed in a small size for portability, including the internal eight-channel sensor array. In2O3 NRs and WO3 NRs manufactured through the E-beam evaporator’s glancing angle method were used as sensing materials. Pt, Pd, and Au metal catalysts were decorated for each channel to enhance functionality. The sensor array was measured for the exhaled gas biomarkers CH3COCH3, NO2, and H2S to confirm the respiratory diagnostic performance. Through this operation, the theoretical detection limit was calculated as 1.48 ppb for CH3COCH3, 1.9 ppt for NO2, and 2.47 ppb for H2S. This excellent detection performance indicates that our sensor array detected the CH3COCH3, NO2, and H2S as biomarkers, applying to the breath gas analysis. Our results showed the high potential of the gas sensor array as a non-invasive diagnostic tool that enables real-time monitoring.

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