The fossil-fuel shortage and severe environmental issues have posed ever-increasing demands on clean and renewable energy sources, for which the exploration of electrocatalysts has been in a big challenge toward...

Process of metal−organic framework (MOF)/covalent−organic framework (COF) hybrids-based derivatives and their applications on energy transfer and storage

Earlier studies have found a relationship between biomolecules in living organisms and diseases. The monitoring of abnormal physical conditions and the timely detection of diseases can reduce the mortality rate and ensure the physical health of organisms. Traditional laboratory methods for analyzing pathogenic factors usually require long time, high cost, and complex process. Biosensors can provide timely and accurate analysis of metabolites in the body to provide support for modern treatment. The unique physico-chemical and photoelectric properties of carbon nanotubes (CNTs) can improve the performance of biosensors, such as the larger surface area for better catalyst fixation and the CNT-modified electrodes for faster electron transfer which provide more sensitive detection of biosensors. Typical applications of CNT-based sensors are described in detail in this article, including detections of glucose detection, DNA, protein, amino acids, and neurotransmitter. The detection performance of sensors can be improved through the continuous improvement of materials and structures. Finally, a summary and future outlook for CNT-based biosensors are provided. 

Recent advances in carbon nanotube-based biosensors for biomolecular detection

Recently, the studies on developing sensors and biosensors—with an obvious interdisciplinary character—have drawn the attention of many researchers specializing in various fundamental, but also complex domains such as chemistry, biochemistry, physics, biophysics, biology, bio-pharma-medicine, and bioengineering. Along these lines, the present paper is structured into three parts, and is aimed at synthesizing the most relevant studies on the construction and functioning of versatile devices, of electrochemical sensors and biosensors, respectively. The first part presents examples of the most representative scientific research focusing on the role and the importance of the phenylalanine, tyrosine, and tryptophan amino acids, selected depending on their chemical structure and their impact on the central nervous system. The second part is dedicated to presenting and exemplifying conductor polymers and molecularly imprinted polymers used as sensitive materials in achieving electrochemical sensors and biosensors. The last part of the review analyzes the sensors and biosensors developed so far to detect amino acids with the aid of conductor polymers and molecularly imprinted polymers from the point of view of the performances obtained, with emphasis on the detection methods, on the electrochemical reactions that take place upon detection, and on the electroanalytical performances. The present study was carried out with a view to highlighting, for the benefit of specialists in medicine and pharmacy, the possibility of achieving and purchasing efficient devices that might be used in the quality control of medicines, as well as in studying and monitoring diseases associated with these amino acids.

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A Review of Sensors and Biosensors Modified with Conducting Polymers and Molecularly Imprinted Polymers Used in Electrochemical Detection of Amino Acids: Phenylalanine, Tyrosine, and Tryptophan

Jiaxian Liu

Papers

Core-shell structure Co–Ni@Fe–Cu doped MOF–GR composites for water splitting

Carbon nanorod supported metal alloy nanocubes using polydopamine as location reagent for water splitting

Dual Signals Electrochemical Biosensor for Point-of-care Testing of Amino Acids Enantiomers