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Article ; Online: Self-enhancement photoelectrochemical strategy for kanamycin determination with amino functionalized MOFs.

Wang, Yang / Jin, Daobin / Zhang, Xiaoqian / Zhao, Jikuan / Hun, Xu

2022 Volume 189, Issue 5, Page(s) 193

Abstract: Based on the self-enhanced photoelectrochemical quality of Cu-MOF- ... ...

Abstract	Based on the self-enhanced photoelectrochemical quality of Cu-MOF-NH
MeSH term(s)	Biosensing Techniques ; Electrochemical Techniques ; Electrodes ; Kanamycin ; Metal Nanoparticles/chemistry
Chemical Substances	Kanamycin (59-01-8)
Language	English
Publishing date	2022-04-14
Publishing country	Austria
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	89-9
ISSN	1436-5073 ; 0026-3672
ISSN (online)	1436-5073
ISSN	0026-3672
DOI	10.1007/s00604-022-05266-w
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Article ; Online: Photoelectrochemical aptasensor with low background noise.

Meng, Yuchan / Wang, Shanshan / Zhao, Jikuan / Hun, Xu

Mikrochimica acta

2020 Volume 187, Issue 11, Page(s) 622

Abstract: In photoelectrochemical (PEC) detection, enhancing the PEC signal and depressing the blank signal are conducive to improve the sensitivity. Because the carbon nanotube (CNT) effectively transfers photogenerated electrons from SnSe to the electrode, the ... ...

Abstract	In photoelectrochemical (PEC) detection, enhancing the PEC signal and depressing the blank signal are conducive to improve the sensitivity. Because the carbon nanotube (CNT) effectively transfers photogenerated electrons from SnSe to the electrode, the composite nanomaterial CNTs/SnSe generates a strong PEC signal. Methionine (Met), AuNPs, and probe DNA are woven together forming a nanoprobe which is used as a quencher to quench the PEC signal of CNTs/SnSe. When the nanoprobe and CNTs/SnSe are modified onto the electrode, there is a low blank signal. In the presence of metastatic breast cancer cells, the cells interact with the aptamer of dsDNA; concomitantly, cDNA is released to trigger catalytic hairpin assembly (CHA). As a result, a new dsDNA which has an overhang is formed. The nanoprobe on the surface of the electrode hybridizes with the newly formed dsDNA. Subsequently, the nanoprobe is released from the surface of the electrode and the quenching effect between the nanoprobe and the CNTs/SnSe disappears. The PEC aptasensor is linear in the concentration range of 300-5,000 cells/mL, and the detection limit is 180 cells/mL under optimized conditions. The relative standard deviation (RSD) is 3.6% at 10,000 cells/mL. This work demonstrates a promising strategy using CNTs/SnSe as the photoactive material and Met-AuNPs as the quencher to establish a PEC aptasensor with a high PEC response and low blank signal. It can be used to detect bioactive substances at ultralow levels prospectively. Graphical abstract.
Language	English
Publishing date	2020-10-22
Publishing country	Austria
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	89-9
ISSN	1436-5073 ; 0026-3672
ISSN (online)	1436-5073
ISSN	0026-3672
DOI	10.1007/s00604-020-04601-3
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Article ; Online: Chemiluminescence assay for kanamycin based on target recycling strategy.

Yu, Liyuan / Zhang, Xiaoqian / Jin, Daobin / Lou, Fangxu / Zhao, Jikuan / Hun, Xu

Luminescence : the journal of biological and chemical luminescence

2022 Volume 37, Issue 6, Page(s) 987–994

Abstract: A chemiluminescence (CL) sensing strategy for kanamycin residue detection in fish samples was established based on luminol-functionalized gold nanoparticles as CL nanoprobe materials combined with DNA hairpin structure and carboxyl-modified magnetic ... ...

Abstract	A chemiluminescence (CL) sensing strategy for kanamycin residue detection in fish samples was established based on luminol-functionalized gold nanoparticles as CL nanoprobe materials combined with DNA hairpin structure and carboxyl-modified magnetic beads. Relying on nucleic acid amplification technology, the system can successfully realize the recycling of kanamycin, so that the biosensor can release a large number of luminol-functionalized gold nanoparticles with excellent CL performance even at a low residual levels of kanamycin. The biosensor strategy showed a good linear relationship with kanamycin in the range 0.09-130 nM, the detection limit was as low as 0.04 nM. This method proves the excellent performance of the sensing strategy and provides a low-cost and high-sensitivity CL analysis strategy for the detection of kanamycin and even other antibiotics.
MeSH term(s)	Animals ; Aptamers, Nucleotide/chemistry ; Biosensing Techniques/methods ; DNA ; Gold/chemistry ; Kanamycin/analysis ; Limit of Detection ; Luminescence ; Luminescent Measurements/methods ; Luminol/chemistry ; Metal Nanoparticles/chemistry
Chemical Substances	Aptamers, Nucleotide ; Kanamycin (59-01-8) ; Luminol (5EXP385Q4F) ; Gold (7440-57-5) ; DNA (9007-49-2)
Language	English
Publishing date	2022-04-24
Publishing country	England
Document type	Journal Article
ZDB-ID	1470995-8
ISSN	1522-7243 ; 1522-7235 ; 1099-1271
ISSN (online)	1522-7243
ISSN	1522-7235 ; 1099-1271
DOI	10.1002/bio.4250
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Article ; Online: Dynamic detection of ppb-level SO

Zhao, Xinyu / Qi, Hongchao / Xu, Yufu / Li, Chenxi / Guo, Min / Zhao, Jikuan / Cui, Dongyu / Chen, Ke

Optics letters

2023 Volume 48, Issue 17, Page(s) 4558–4561

Abstract: We design a photoacoustic (PA) ... ...

Abstract	We design a photoacoustic (PA) SO
Language	English
Publishing date	2023-07-15
Publishing country	United States
Document type	Journal Article
ISSN	1539-4794
ISSN (online)	1539-4794
DOI	10.1364/OL.498908
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Article ; Online: Fiber-Optic Photoacoustic Gas Sensor with Multiplexed Fabry-Pérot Interferometric Cantilevers.

Li, Chenxi / Guo, Min / Wang, Zhengzhi / Zhao, Xinyu / Qi, Hongchao / Han, Xiao / Cui, Dongyu / Zhao, Jikuan / Peng, Wei / Chen, Ke

Analytical chemistry

2023 Volume 95, Issue 48, Page(s) 17477–17485

Abstract: A fiber-optic photoacoustic (PA) gas sensor with multiplexed Fabry-Pérot (F-P) interferometric cantilevers is demonstrated. A compact cylindrical nonresonant PA tube with a volume of only 0.45 mL is designed. The PA signal is measured by two ... ...

Abstract	A fiber-optic photoacoustic (PA) gas sensor with multiplexed Fabry-Pérot (F-P) interferometric cantilevers is demonstrated. A compact cylindrical nonresonant PA tube with a volume of only 0.45 mL is designed. The PA signal is measured by two symmetrically installed fiber-optic interferometric cantilever microphones (FOICMs) to improve the signal-to-noise ratio (SNR). For multiplexing the two cantilevers by a single demodulation system, a dual cavity length synchronous measurement method based on total-phase demodulation algorithm with ultrahigh resolution is developed. The PA signal detection is realized by the second-harmonic wavelength modulation spectroscopy (2
Language	English
Publishing date	2023-11-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.3c02271
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Article ; Online: Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF

Zhao, Xinyu / Guo, Min / Cui, Dongyu / Li, Chenxi / Qi, Hongchao / Chen, Ke / Ma, Fengxiang / Huang, Jiayu / Zhang, Guangyin / Zhao, Jikuan

Analytical chemistry

2023 Volume 95, Issue 21, Page(s) 8214–8222

Abstract: We designed and implemented a photoacoustic (PA) sensor for ... ...

Abstract	We designed and implemented a photoacoustic (PA) sensor for H
Language	English
Publishing date	2023-05-16
Publishing country	United States
Document type	Journal Article
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.3c00003
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Article ; Online: Multi-pass Differential Photoacoustic Sensor for Real-Time Measurement of SF₆ Decomposition Component H₂S at the ppb Level

Zhao, Xinyu / Guo, Min / Cui, Dongyu / Li, Chenxi / Qi, Hongchao / Chen, Ke / Ma, Fengxiang / Huang, Jiayu / Zhang, Guangyin / Zhao, Jikuan

Analytical Chemistry. 2023 May 16, v. 95, no. 21 p.8214-8222

2023

Abstract: We designed and implemented a photoacoustic (PA) sensor for H₂S detection in SF₆ background gas based on a multi-pass differential photoacoustic cell (MDPC) and a near-infrared distributed feedback (DFB) laser. In the MDPC apparatus, two resonators with ... ...

Abstract	We designed and implemented a photoacoustic (PA) sensor for H₂S detection in SF₆ background gas based on a multi-pass differential photoacoustic cell (MDPC) and a near-infrared distributed feedback (DFB) laser. In the MDPC apparatus, two resonators with identical geometric parameters were vertically and symmetrically embedded. The differential processing algorithm of two phase-reversed signals realized the effective enhancement of the PA signal and suppressed the flow noise in the dynamic sampling process. In addition, the λ/4 buffer chamber in the MDPC was utilized as a muffler to further reduce the flow noise and realize the dynamic detection of H₂S. The collimated excitation light was reflected 30 times in a multi-pass structure constituted of two gold-plated concave mirrors, and an absorption path length of 4.92 m was achieved. Due to the high gas density of SF₆, the relationship between the signal-to-noise ratio (SNR) and the gas flow was different between SF₆ and N₂ background gases. The maximum flow rate of the characteristic gas components detected in the SF₆ background is 150 standard cubic centimeters per minute (SCCM), which is lower than 350 SCCM in N₂. The linearity property was analyzed, and the results show that the sensitivity of the sensor to H₂S in the SF₆ background was 27.3 μV/ppm. With the structure, parameters, temperature, gas flow, and natural frequency of the MDPC been optimized, a minimum detection limit (MDL) of 11 ppb was reached with an averaging time of 1000 s, which furnished an effective preventive implement for the safe operation of gas insulation equipment.
Keywords	absorption ; algorithms ; analytical chemistry ; detection limit ; equipment ; geometry ; insulating materials ; signal-to-noise ratio ; temperature
Language	English
Dates of publication	2023-0516
Size	p. 8214-8222.
Publishing place	American Chemical Society
Document type	Article ; Online
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.3c00003
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Article ; Online: Fiber-Optic Photoacoustic Gas Sensor with Multiplexed Fabry–Pérot Interferometric Cantilevers

Li, Chenxi / Guo, Min / Wang, Zhengzhi / Zhao, Xinyu / Qi, Hongchao / Han, Xiao / Cui, Dongyu / Zhao, Jikuan / Peng, Wei / Chen, Ke

Analytical Chemistry. 2023 Nov. 27, v. 95, no. 48 p.17477-17485

2023

Abstract: A fiber-optic photoacoustic (PA) gas sensor with multiplexed Fabry–Pérot (F–P) interferometric cantilevers is demonstrated. A compact cylindrical nonresonant PA tube with a volume of only 0.45 mL is designed. The PA signal is measured by two ... ...

Abstract	A fiber-optic photoacoustic (PA) gas sensor with multiplexed Fabry–Pérot (F–P) interferometric cantilevers is demonstrated. A compact cylindrical nonresonant PA tube with a volume of only 0.45 mL is designed. The PA signal is measured by two symmetrically installed fiber-optic interferometric cantilever microphones (FOICMs) to improve the signal-to-noise ratio (SNR). For multiplexing the two cantilevers by a single demodulation system, a dual cavity length synchronous measurement method based on total-phase demodulation algorithm with ultrahigh resolution is developed. The PA signal detection is realized by the second-harmonic wavelength modulation spectroscopy (2f-WMS) technique. The sensor performance is verified by conducting the detection of trace acetylene (C₂H₂). The normalized noise equivalent absorption (NNEA) coefficient is 2.5 × 10–⁹ cm–¹·W·Hz–¹/², and the minimum detection limit (MDL) downs to about 0.2 ppm with an averaging time of 1 s. The fiber-optic PA gas sensor has characteristics of high resolution and immunity to electromagnetic and vibration interference. Furthermore, the technical scheme of the multiplexed cantilever demodulation shows great potential for remote multipoint monitoring of gases in harsh environments.
Keywords	absorption ; acetylene ; algorithms ; analytical chemistry ; detection limit ; fiber optics ; immunity ; interferometry ; signal-to-noise ratio ; spectroscopy ; vibration ; wavelengths
Language	English
Dates of publication	2023-1127
Size	p. 17477-17485.
Publishing place	American Chemical Society
Document type	Article ; Online
ZDB-ID	1508-8
ISSN	1520-6882 ; 0003-2700
ISSN (online)	1520-6882
ISSN	0003-2700
DOI	10.1021/acs.analchem.3c02271
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Article ; Online: A cascade autocatalytic strand displacement amplification and hybridization chain reaction event for label-free and ultrasensitive electrochemical nucleic acid biosensing.

Chen, Zhiqiang / Liu, Ying / Xin, Chen / Zhao, Jikuan / Liu, Shufeng

Biosensors & bioelectronics

2018 Volume 113, Page(s) 1–8

Abstract: Herein, an autocatalytic strand displacement amplification (ASDA) strategy was proposed for the first time, which was further ingeniously coupled with hybridization chain reaction (HCR) event for the isothermal, label-free and multiple amplification ... ...

Abstract	Herein, an autocatalytic strand displacement amplification (ASDA) strategy was proposed for the first time, which was further ingeniously coupled with hybridization chain reaction (HCR) event for the isothermal, label-free and multiple amplification toward nucleic acid detection. During the ASDA module, the target recognition opens the immobilized hairpin probe (IP) and initiates the annealing of the auxiliary DNA strand (AS) with the opened IP for the successive polymerization and nicking reaction in the presence of DNA polymerase and nicking endonuclease. This induces the target recycling and generation of a large amount of intermediate DNA sequences, which can be used as target analogy to execute the autocatalytic strand displacement amplification. Simultaneously, the introduced AS strand can propagate the HCR between two hairpins (H1 and H2) to form a linear DNA concatamer with cytosine (C)-rich loop region, which can facilitate the in-situ synthesis of silver nanoclusters (AgNCs) as electrochemical tags for further amplification toward target responses. With current cascade ASDA and HCR strategy, the detection of target DNA could be achieved with a low detection limit of about 0.16 fM and a good selectivity. The developed biosensor also exhibits the distinct advantages of flexibility and simplicity in probe design and biosensor fabrication, and label-free electrochemical detection, thus opens a promising avenue for the detection of nucleic acid with low abundance in bioanalysis and clinical biomedicine.
MeSH term(s)	Biosensing Techniques/methods ; DNA/analysis ; Electrochemical Techniques/methods ; Immobilized Nucleic Acids/chemistry ; Limit of Detection ; Metal Nanoparticles/chemistry ; Nucleic Acid Amplification Techniques/methods ; Nucleic Acid Hybridization/methods ; Silver/chemistry
Chemical Substances	Immobilized Nucleic Acids ; Silver (3M4G523W1G) ; DNA (9007-49-2)
Language	English
Publishing date	2018-04-23
Publishing country	England
Document type	Journal Article
ZDB-ID	1011023-9
ISSN	1873-4235 ; 0956-5663
ISSN (online)	1873-4235
ISSN	0956-5663
DOI	10.1016/j.bios.2018.04.046
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Article: A cascade autocatalytic strand displacement amplification and hybridization chain reaction event for label-free and ultrasensitive electrochemical nucleic acid biosensing

Chen, Zhiqiang / Liu, Ying / Xin, Chen / Zhao, Jikuan / Liu, Shufeng

Biosensors & bioelectronics. 2018 Aug. 15, v. 113

2018

Abstract	Herein, an autocatalytic strand displacement amplification (ASDA) strategy was proposed for the first time, which was further ingeniously coupled with hybridization chain reaction (HCR) event for the isothermal, label-free and multiple amplification toward nucleic acid detection. During the ASDA module, the target recognition opens the immobilized hairpin probe (IP) and initiates the annealing of the auxiliary DNA strand (AS) with the opened IP for the successive polymerization and nicking reaction in the presence of DNA polymerase and nicking endonuclease. This induces the target recycling and generation of a large amount of intermediate DNA sequences, which can be used as target analogy to execute the autocatalytic strand displacement amplification. Simultaneously, the introduced AS strand can propagate the HCR between two hairpins (H1 and H2) to form a linear DNA concatamer with cytosine (C)-rich loop region, which can facilitate the in-situ synthesis of silver nanoclusters (AgNCs) as electrochemical tags for further amplification toward target responses. With current cascade ASDA and HCR strategy, the detection of target DNA could be achieved with a low detection limit of about 0.16 fM and a good selectivity. The developed biosensor also exhibits the distinct advantages of flexibility and simplicity in probe design and biosensor fabrication, and label-free electrochemical detection, thus opens a promising avenue for the detection of nucleic acid with low abundance in bioanalysis and clinical biomedicine.
Keywords	DNA ; DNA-directed DNA polymerase ; biosensors ; catalytic activity ; cytosine ; detection limit ; electrochemistry ; hybridization chain reaction ; nanosilver ; nucleic acid annealing ; nucleotide sequences ; polymerization
Language	English
Dates of publication	2018-0815
Size	p. 1-8.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1011023-9
ISSN	1873-4235 ; 0956-5663
ISSN (online)	1873-4235
ISSN	0956-5663
DOI	10.1016/j.bios.2018.04.046
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