scholarly journals Preparation of Large Conjugated Polybenzimidazole Fluorescent Materials and Their Application in Metal Ion Detection

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3091
Author(s):  
Xi-Ying Cao ◽  
Chu-Ming Pang ◽  
Ying Xiao ◽  
Wan-Qing Xiao ◽  
Shi-He Luo ◽  
...  
Keyword(s):  
Metal Ion ◽  
Molecular Level ◽  
Logic Gate ◽  
Metal Catalysis ◽  
Good Solubility ◽  
Highly Sensitive ◽  
Fluorescent Materials ◽  
New Type ◽  
Metal Ion Detection ◽  
First Time

A new type of conjugated polybenzimidazole (CPBI) was synthesized through a simple polycondensation reaction without metal catalysis, and N-alkylation modification was carried out to solve the problems of solubility and fluorescence properties. A series of nano-microsphere polymers CPBIn with large conjugation, good solubility, and strong fluorescence has been successfully used as “turn-off” fluorescent probes for the first time. The results show that, under suitable N-alkylation conditions, the obtained CPBIn can be used as a highly sensitive and selective fluorescent probe for the detection of Cu2+ and Zn2+ at the same time, and their detection limits are both nM levels. In addition, CPBI2 can be designed as an ultra-sensitive IMPLICATION logic gate at the molecular level, cyclically detecting Cu2+. With the test paper containing CPBI2, easy and quick on-site detection can be achieved. This research provides a new idea for the brief synthesis of multifunctional materials.

Water-Soluble Perylene Diimide for Highly Sensitive and Repeatable Metal Ion Detection with Novel Logic Gate Operation

2019 ◽  
Vol 72 (3) ◽  
pp. 206 ◽  
Author(s):  
Wenxia Liu ◽  
Zhiguang Suo ◽  
Yihao Liu ◽  
Lingyan Feng ◽  
Binbin Zhang ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Logic Gate ◽  
Water Soluble ◽  
Optical Intensity ◽  
Gate Operation ◽  
Highly Sensitive ◽  
Metal Ions Detection ◽  
Metal Ion Detection ◽  
Relative Change

In this paper, we report a synthesised water soluble perylene derivative, N,N′-di(2-aspartic acid)-perylene-3,4,9,10-tetracarboxylic diimide (PASP), for highly sensitive and repeatable detection of copper (Cu2+) and aluminium ions (Al3+) and novel logic gate operation. In the presence of metal ions, a dramatic decrease in PASP optical intensity was induced based on the strong interaction between terminal carboxy groups and the metal ions. Detection limits of 0.22 and 0.24μM were respectively obtained at physiological pH. The signals could be recovered upon the addition of ethylenediaminetetraacetate (EDTA) and P2O74−, which competed for Cu2+ and Al3+ in the PASP-CuII and PASP-AlIII systems and induced their dissociation as secondary sensors for anions. At least four detection cycles were performed with a high recovery efficiency. Based on these phenomena, a novel three-level logic gate (OR-IMP-OR) was performed for smart signal readout with metal ions (Cu2+ and Al3+) and anions (EDTA and P2O74−) as input signals, and the relative change of optical intensity of PASP as output signal. Furthermore, the prepared PASP molecule also responded sensitively to Cu2+ and Al3+ in 10% diluted serum medium.

19F CEST imaging probes for metal ion detection

2017 ◽  
Vol 15 (30) ◽  
pp. 6441-6446 ◽  
Author(s):  
Qiaoli Peng ◽  
Yaping Yuan ◽  
Huaibin Zhang ◽  
Shaowei Bo ◽  
Yu Li ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Ion Detection ◽  
Cest Imaging ◽  
Highly Sensitive ◽  
Imaging Probes ◽  
Metal Ion Detection

An easily available fluorinated chelator was developed as a highly sensitive 19F iCEST MRI probe for selectively detecting metal ions.

Radiation synthesis for a highly sensitive colorimetric hydrogel sensor-based p(AAc/AMPS)-TA for metal ion detection

2021 ◽  
Vol 9 ◽  
pp. 100169
Author(s):  
Tasneam K. El-damhougy ◽  
Amal S.I. Ahmed ◽  
Ghalia A. Gaber ◽  
Nabila A. Mazied ◽  
Ghada Bassioni
Keyword(s):  
Metal Ion ◽  
Ion Detection ◽  
Radiation Synthesis ◽  
Highly Sensitive ◽  
Metal Ion Detection

S,N-Co-doped carbon nanoparticles with high quantum yield for metal ion detection, IMP logic gates and bioimaging applications

2018 ◽  
Vol 42 (24) ◽  
pp. 20180-20189 ◽  
Author(s):  
Jinping Song ◽  
Qi Ma ◽  
Sufang Zhang ◽  
Huijun Liu ◽  
Yong Guo ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Carbon Nanoparticles ◽  
Metal Ion ◽  
Logic Gate ◽  
Logic Gates ◽  
High Quantum Yield ◽  
Ion Detection ◽  
High Quantum ◽  
Metal Ion Detection ◽  
Co Doped

S,N-CNPs with high quantum yield exhibited potential multiple applications including metal ion detection, IMP logic gate fabrication and bioimaging.

Multi-colour bipolar electrochemiluminescence for heavy metal ion detection

2019 ◽  
Vol 55 (8) ◽  
pp. 1024-1027 ◽  
Author(s):  
Mohammad Reza Moghaddam ◽  
Serena Carrara ◽  
Conor F. Hogan
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Low Cost ◽  
Heavy Metal Ion ◽  
Ion Detection ◽  
New Approach ◽  
Highly Sensitive ◽  
Metal Ion Detection

We report a new approach to heavy metal ion detection based on bipolar electrochemiluminescence (BP-ECL), which is simple and low cost yet highly sensitive.

A new generation of highly sensitive luminescent thermometers operating in the optical window of biological tissues

2016 ◽  
Vol 4 (24) ◽  
pp. 5559-5563 ◽  
Author(s):  
Lukasz Marciniak ◽  
Artur Bednarkiewicz ◽  
Diana Kowalska ◽  
Wieslaw Strek
Keyword(s):  
High Sensitivity ◽  
Biological Tissues ◽  
Temperature Dependent ◽  
Optical Window ◽  
Highly Sensitive ◽  
New Type ◽  
New Generation ◽  
First Time

A new type of luminescent thermometer based on highly temperature dependent d–d Cr3+ transitions related to barely temperature dependent f–f Nd3+ transitions for bio-application is reported for the first time, showing exceptionally high sensitivity.

Sensitive, portable heavy-metal-ion detection by the sulfidation method on a superhydrophobic concentrator (SPOT)

One Earth ◽  
2021 ◽  
Author(s):  
Hiang Kwee Lee ◽  
Wenxiao Huang ◽  
Yusheng Ye ◽  
Jinwei Xu ◽  
Yucan Peng ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Ion Detection ◽  
Metal Ion Detection
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