Article
Chemistry, Analytical
Yuting Zhang, Hui Li, Zongkang Guo, Xiaoli Wang, Nandi Zhou
Summary: Electrochemical aptasensors have limitations due to variations in aptamer loading densities and low signal amplification efficiency. In this study, an immobilization-free and label-free electrochemical homogeneous aptasensor was developed for CEA assay using RecJf exonuclease-mediated target cycling strategy and rolling circle amplification technology. This system eliminates the need for pre-immobilization on electrode substrates and shows good versatility and stability, as well as improved sensitivity in the homogeneous solution phase. The proposed aptasensors achieve satisfactory results in actual sample tests and have potential for commercial applications and future target platforms.
ANALYTICA CHIMICA ACTA
(2023)
Article
Environmental Sciences
Guanjie Wang, Jiashuai Sun, Baoxin Li, Fukai Guan, Jingcheng Huang, Haowei Dong, Jiali Zhang, Jie Han, Zheng Shen, Deyan Xu, Xia Sun, Yemin Guo, Shancang Zhao
Summary: A multiplex strategy electrochemical platform was developed for the simultaneous detection of profenofos (PFF) and diazinon (DZN) using a self-assembly dual-site DNA tetrahedral scaffold (DTS). Thionine (Thi) and 6-(Ferrocenyl) hexanethiol (Fc6S) were used to label aptamers for the synthesis of probes. The combination of carboxylic acid functionalized multi-walled carbon nanotubes and ferroferric oxide nanoparticles improved the conductivity and specific surface area of the electrode.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biochemistry & Molecular Biology
Zhenbo Zhou, Tianyu Gao, Yuning Zhao, Peng Yang, Di Cheng, Huaixia Yang, Ying Wang, Xiaofei Li
Summary: A novel aptasensor based on the dual signal amplification strategy of PEI-GO and ROP was successfully constructed for high sensitivity detection of cTnI. The aptasensor exhibited good selectivity, simple operation, excellent stability, and demonstrated considerable application potential in biomedical assays, even in real serum samples.
BIOELECTROCHEMISTRY
(2023)
Article
Chemistry, Analytical
Miaoran Xu, Hao Dang, Mengfei Wang, Shuai Zhang, Qiaojuan Jia, Jia-Yue Tian, Minghua Wang, Miao Du
Summary: In this study, a new dual-modal electrochemical (EC)-photoelectrochemical (PEC) aptasensing strategy has been developed for the sensitive determination of penicillin G (PG) in complex environments. An Fe-doped covalent triazine framework (Fe-MA-Dha-CTF) was synthesized and demonstrated enhanced photoelectric conversion efficiency, superior electrochemical activity, and high bioaffinity towards the PG-targeted aptamer. The established Fe-MA-Dha-CTF-based dual-modal EC-PEC aptasensor exhibited ultralow limits of detection and high selectivity, stability, reproducibility, and practicability in diverse real samples. This CTF-based dual-modal aptasensing approach extends the application of porous-organic frameworks in biosensing.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Qian Zhao, Guangyin Zhang, Dai Lu, Kejun Feng, Xingbo Shi
Summary: A highly sensitive aptasensor based on dual-enzyme mediated cascade-signal amplification was developed for the detection of ampicillin. The sensor exhibited excellent detection performance and versatility, paving the way for efficient sensors for detecting other trace food hazards.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Meixing Li, Juan Cheng, Haitao Zheng, Jiawei Shi, Qingming Shen
Summary: A new electrochemical sensing strategy was developed for the precise detection of ultra-low abundance microRNA-21. The sensor utilized modified magnetic beads and hybridization chain reaction (HCR) to achieve signal amplification while avoiding modification fluctuation. The biosensor exhibited excellent specificity and reproducibility in complex sample analysis.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Xiaojie Shi, Huimin Liu, Mei Zhang, Fengzhen Yang, Jiansen Li, Yemin Guo, Xia Sun
Summary: The ultrasensitive aptasensor based on luminol-hydrogen peroxide (H2O2) electrochemiluminescence (ECL) system showed excellent detection performance for profenofos, with AuNPs@MWCNTs enhancing luminol loading and Au@AgNPs catalyzing H2O2 decomposition for signal amplification. The sensor achieved a detection limit of 5.32 fg/mL and had good specificity, repeatability, and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Baozhong Zhang, Xinyue Ma, Lingling Xie, Xiquan Li, Lingyun Chen, Baoshan He
Summary: An ultrasensitive electrochemical aptasensor was developed in this study for the detection of tobramycin (TOB) residues. The sensor utilizes a signal amplification strategy and provides a broad linear range with a low detection limit. It exhibits favorable stability, specificity, and reproducibility, and has been successfully applied to practical samples.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Lei Shang, Bing-Jiao Shi, Wei Zhang, Li-Ping Jia, Rong-Na Ma, Qing-Wang Xue, Huai-Sheng Wang, Wei Yan
Summary: Aptasensor based on electrochemical stripping chemiluminescence technology combined with DNA nanoclusters shows high sensitivity and good performance in detecting CEA.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Lixia Su, Yonghuan Su, Bingqian Liu
Summary: A new strategy for immobilization-free detection of E. coli was developed using a composite as capture probes and signal amplification labels, achieving target detection through a specific sandwich format. This method showed linear detection of E. coli concentration with a low limit of detection.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Min Qing, Zhe Sun, Lei Wang, Shi Zhe Du, Jiao Zhou, Qian Tang, Hong Qun Luo, Nian Bing Li
Summary: The study combines electrochemical aptasensors with the CRISPR/Cas12a strategy, utilizing BIDSD, RCA, and CRISPR/Cas12a mechanisms to achieve specific and sensitive detection of thrombin with a calculated limit of detection of 1.26 fM, while simplifying the operation steps by omitting the probe surface-immobilization procedure.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Falan Li, Yanfang Wu, Dongfei Chen, Yemin Guo, Xiangyou Wang, Xia Sun
Summary: The study developed a dual-labeled multiple aptasensor for simultaneous detection of multiple antibiotics, using kanamycin and tobramycin as model analytes, with wider detection linear range and lower detection limits compared to previous sensors. The novel sensitive platform demonstrated successful detection of kanamycin and tobramycin spiked in milk samples.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Analytical
Ayemeh Bagheri Hashkavayi, Byung Seok Cha, Sung Hyun Hwang, Jimin Kim, Ki Soo Park
Summary: An electrochemical aptasensor based on rolling circle amplification (RCA) and the catalytic ability of the hemin/G-quadruplex complex was developed for highly sensitive and selective detection of circulating tumor cells (CTCs). This strategy allows for the sensitive determination of target cancer cells down to a single cell with high selectivity even in human serum. The proposed platform with dual signal amplification shows promise for simple and ultrasensitive detection of CTCs, as well as other cancer cells and biomarkers in different clinical and biological samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Biophysics
Jiansen Li, Fengzhen Yang, Xiaofeng Chen, Honggang Fang, Chuanyun Zha, Jingcheng Huang, Xia Sun, Mohamed Bedair Mohamed Ahmed, Yemin Guo, Yuan Liu
Summary: In this study, a dual-ratiometric electrochemical aptasensor was developed for simultaneous detection of malathion and profenofos. Metal ions, hairpin-tetrahedral DNA nano-structures, and nanocomposites were used to create the sensing framework and signal amplification strategy. The detection limits of the aptasensor for malathion and profenofos were 4.3 pg mL-1 and 13.3 pg mL-1, respectively.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Biochemistry & Molecular Biology
Rokhsareh Abedi, Jahan Bakhsh Raoof, Mojtaba Mohseni, Ayemeh Bagheri Hashkavayi
Summary: An electrochemical aptasensor was developed for the detection of Pseudomonas aeruginosa (P. aeruginosa) bacteria. The electrode surface was modified to increase the effective surface area and immobilize the aptamer. The use of a dual signal amplification strategy improved the sensitivity of the aptasensor. Promising results were obtained with a limit of detection of 1 CFU/mL (sigma = 3), indicating that this strategy could be a practical and reliable method for P. aeruginosa detection.
BIOELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)