A new hydrazone-linked covalent organic framework for Fe(Ⅲ) detection by fluorescence and QCM technologies

CrystEngComm ◽  
2021 ◽  
Author(s):  
Dian-Mei Li ◽  
Shu-Yuan Zhang ◽  
Jia-Yi Wan ◽  
Wen-Qian Zhang ◽  
Yi-Lun Yan ◽  
...  
Keyword(s):  
Detection Limit ◽  
Biological Systems ◽  
Covalent Organic Framework ◽  
Low Detection Limit ◽  
New Sensors ◽  
Excellent Selectivity ◽  
Organic Framework

Since Fe(III) ion is of importance in biological systems, the development of new sensors for detecting Fe(III) with excellent selectivity and low detection limit is desirable. Herein, a new stable...

2D covalent organic framework thin films via interfacial self-polycondensation of an A2B2 type monomer

2020 ◽  
Vol 56 (22) ◽  
pp. 3253-3256 ◽  
Author(s):  
Bowen Zhang ◽  
Xiaoyu Song ◽  
Yusen Li ◽  
Yang Li ◽  
Zhongxiang Peng ◽  
...  
Keyword(s):  
Thin Films ◽  
Detection Limit ◽  
Rapid Response ◽  
Covalent Organic Framework ◽  
Low Detection Limit ◽  
Good Repeatability ◽  
Organic Framework

Highly crystalline and oriented 2D Py-COF thin films were readily fabricated via an elaborately designed A2B2 monomer, and served as stable acidichromism sensors with rapid response, low detection limit and good repeatability.

Bis-Organosilicon based receptor for detection of Hg2+ ions: Low detection limit and excellent selectivity

2020 ◽  
Vol 923 ◽  
pp. 121458
Author(s):  
Gurjaspreet Singh ◽  
Pinky Satija ◽  
Akshpreet Singh ◽  
Kavita Chowdhary ◽  
Geetika Sharma ◽  
...  
Keyword(s):  
Detection Limit ◽  
Low Detection Limit ◽  
Excellent Selectivity

The synergistic effect of Co/Ni in ultrathin metal–organic framework nanosheets for the prominent optimization of non-enzymatic electrochemical glucose detection

2020 ◽  
Vol 8 (5) ◽  
pp. 1008-1016 ◽  
Author(s):  
Haihan Zou ◽  
Dongyan Tian ◽  
Chao Lv ◽  
Songmei Wu ◽  
Guanxuan Lu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Synergistic Effect ◽  
Electrode Material ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Glucose Sensing ◽  
Glucose Detection ◽  
Metal Organic ◽  
Excellent Selectivity ◽  
Organic Framework

Co–Ni ultrathin metal organic framework nanosheets exhibited extremely high sensitivity, wide linear range, low detection limit and excellent selectivity as a glucose sensing electrode material.

Highly responsive ethylenediamine vapor sensor based on a perylenediimide–camphorsulfonic acid complex via ionic self-assembly

2017 ◽  
Vol 5 (30) ◽  
pp. 7644-7651 ◽  
Author(s):  
Yongwei Huang ◽  
Xiaotian Liu ◽  
Qing Wang ◽  
Jiya Fu ◽  
Lili Zhao ◽  
...  
Keyword(s):  
Detection Limit ◽  
Self Assembly ◽  
Camphorsulfonic Acid ◽  
Acid Complex ◽  
Low Detection Limit ◽  
Vapor Sensor ◽  
Excellent Selectivity

Two perylene conductometric sensors with excellent selectivity and low detection limit towards ethylenediamine vapor have been developed by ionic self-assembly.

First report of silver ion recognition via a silatrane-based receptor: excellent selectivity, low detection limit and good applicability

2019 ◽  
Vol 43 (14) ◽  
pp. 5525-5530 ◽  
Author(s):  
Gurjaspreet Singh ◽  
Akshpreet Singh ◽  
Pinky Satija ◽  
Geetika Sharma ◽  
Shilpy Shilpy ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Click Chemistry ◽  
Knoevenagel Condensation ◽  
Silver Ions ◽  
Silver Ion ◽  
Ion Recognition ◽  
First Report ◽  
Low Detection Limit ◽  
Excellent Selectivity

This study involves the synthesis of a silatrane-based receptor using Knoevenagel condensation and click chemistry approach for the recognition of silver ions in aqueous solution.

scholarly journals A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600

Biosensors ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 458
Author(s):  
Aihui Liang ◽  
Shengfu Zhi ◽  
Qiwen Liu ◽  
Chongning Li ◽  
Zhiliang Jiang
Keyword(s):  
Polyethylene Glycol ◽  
Detection Limit ◽  
Molecular Spectroscopy ◽  
Molecular Probes ◽  
Linear Range ◽  
Chloroauric Acid ◽  
Covalent Organic Framework ◽  
Indicator Reaction ◽  
Relative Standard ◽  
Organic Framework

In this paper, dicyandiamide (Dd) and p-benzaldehyde (Bd) were heated at 180 ∘C for 3 h to prepare a new type of stable covalent organic framework (COF) DdBd nanosol with high catalysis. It was characterized by molecular spectroscopy and electron microscopy. The study found that DdBd had a strong catalytic effect on the new indicator reaction of polyethylene glycol 600 (PEG600)-chloroauric acid to form gold nanoparticles (AuNPs). AuNPs have strong resonance Rayleigh scattering (RRS) activity, and in the presence of Victoria Blue B (VBB) molecular probes, they also have a strong surface-enhanced Raman scattering (SERS) effect. Combined with a highly selective oxytetracycline (OTC) aptamer (Apt) reaction, new dual-mode scattering SERS/RRS methods were developed to quantitatively analyze ultratrace OTC. The linear range of RRS is 3.00 × 10−3 –6.00 × 10−2 nmol/L, the detection limit is 1.1 × 10−3 nmol/L, the linear range of SERS is 3.00 × 10−3–7.00 × 10−2 nmol/L, and the detection limit is 9.0 × 10−4 nmol/L. Using the SERS method to analyze OTC in soil samples, the relative standard deviation is 1.35–4.78%, and the recovery rate is 94.3–104.9%.

A “turn-on” Cr3+ ion probe based on non-luminescent metal-organic frameworkNew strategy to prepare recovery probe

2021 ◽  
Author(s):  
Pei-Pei Zhang ◽  
Bo Song ◽  
Zhongyi Li ◽  
Jian-Jun Zhang ◽  
Ai-Yun Ni ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Metal Organic Framework ◽  
Turn On ◽  
Low Detection Limit ◽  
Ion Probe ◽  
New Strategy ◽  
Metal Organic ◽  
Organic Framework

Highly selective and sensitive, and low detection limit probes that can work in aqueous solution are of great significance for detection. Present here is a unique metal organic framework of...

A triazine-based covalent organic framework/palladium hybrid for one-pot silicon-based cross-coupling of silanes and aryl iodides

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 41017-41024 ◽  
Author(s):  
Sha Lin ◽  
Yuxia Hou ◽  
Xiao Deng ◽  
Haoliang Wang ◽  
Shuzhuang Sun ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
One Pot ◽  
Covalent Organic Framework ◽  
Aryl Iodides ◽  
Cross Coupling Reaction ◽  
Silicon Based ◽  
Excellent Selectivity ◽  
Organic Framework

A palladium/COF hybrid material could efficiently catalyze the silicon-based one-pot cross-coupling reaction of silanes and aryl iodides with excellent selectivity.

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