Article
Chemistry, Analytical
Olga A. Goryacheva, Natalia Beloglazova, Irina Yu Goryacheva, Sarah De Saeger
Summary: Semiconductor quantum dots (QDs) are widely used as luminescent labels in food and medical analysis, and in combination with gold nanoparticles (GNs) as energy acceptors in Forster resonance energy transfer (FRET) pairs to develop highly sensitive biosensors. The developed homogeneous FRET-based immunoassay for detecting deoxynivalenol (DON) demonstrates the potential of fast and high-throughput mycotoxin control with a low limit of detection.
Article
Food Science & Technology
Lin Wei, Hui Zhang, Xia Sun, Xue Huang, He Li, Falan Li, Yemin Guo, Qingqing Yang
Summary: An ultrasensitive aptasensor based on fluorescence resonance energy transfer was developed for the detection of kanamycin. The sensor showed a good linear relationship between fluorescence intensity and the logarithm of kanamycin concentration, with a detection limit of 5.7 pM.
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Jihye Kang, Van-Thuan Nguyen, Moon-Soo Kim
Summary: Antibiotic resistance has become a major health concern due to the reduced efficacy of antibiotics. This study developed a rapid and sensitive system for detecting antibiotic resistance genes using programmable DNA-binding domains called TALEs and graphene oxide (GO). The results showed that the combination of TALEs and GO can provide a highly sensitive and rapid method for direct detection of antibiotic resistance genes.
ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Zuo-Qin Liang, Zhi-Yang Zou, Xu Yan, Xiao-Bo Zhang, Dong-Dong Song, Chang-Qing Ye, Xiao-Mei Wang, Xu-Tang Tao
Summary: The introduction of tetraphenylethene group into cyanine dye is found to enhance the upconversion luminescence of dye-sensitized UCNPs. By inhibiting the tight packing of cyanine dyes and increasing the fluorescence quantum yield, a 135-fold enhancement of upconversion luminescence is achieved. Furthermore, triethylamine is shown to further increase the upconversion luminescence.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Analytical
Ying He, Fangxin Hu, Jinwen Zhao, Guomin Yang, Yuanyuan Zhang, Shihong Chen, Ruo Yuan
Summary: A novel dual-signal combined nanoprobe with two different types of nanoparticles as ECL probes and hydrogen peroxide as a bifunctional moderator was designed for enzyme sensing analysis. In the presence of organophosphorus compounds, enzyme activity was inhibited, leading to changes in ECL signals. This integrated system provides a new pathway for ratiometric ECL systems involving enzyme catalytic amplification.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Tian Zhang, Chaoqing Dong, Jicun Ren
Summary: A novel measurement strategy was proposed to investigate the protein corona formed in nanoparticles using a dual-wavelength laser-irradiated differenced resonance light scattering correlation spectroscopy (D-RLSCS) technique. The binding constants and rates between proteins and gold nanoparticles (GNPs) were determined using the ratiometric diffusion change of NPs. The study also investigated the dynamic behavior of the protein corona in a fluid flow mimicking biological vessels using a microfluidic channel.
ANALYTICAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Chen Luo, Xiaoxiao Chen, Pu Li, Chaobiao Huang
Summary: A photoelectrochemical sensor for methionine detection was developed based on the aggregation of gold nanoparticles induced by DNA bio-dots. The sensor utilized CS-GSH-CuNCs/TiO2 NPs as the photoelectric conversion element and AuNPs as the specific recognition element. The sensor showed good linearity in detecting methionine concentration and had a low limit of detection.
Article
Chemistry, Applied
Nini Liang, Xuetao Hu, Wenting Li, Anjelina W. Mwakosya, Ziang Guo, Yiwei Xu, Xiaowei Huang, Zhihua Li, Xinai Zhang, Xiaobo Zou, Jiyong Shi
Summary: A dual-mode fluorescence/colorimetric sensor utilizing CQDs and GNPs was developed for visual detection of malathion in cabbage. Calibration curves were established based on fluorescence intensity and absorbance, with accurate detection results in cabbage samples. This sensor shows strong application potential for rapid screening.
Review
Chemistry, Multidisciplinary
Giulio Ragazzon, Alejandro Cadranel, Elena Ushakova, Yichun Wang, Dirk M. Guldi, Andrey L. Rogach, Nicholas A. Kotov, Maurizio Prato
Summary: Carbon dots, graphene quantum dots, and other carbon nanocolloids have attracted interest as readily available, non-toxic, and tailorable carbon-based nanomaterials. Their luminescence remains a source of dispute, and the lack of understanding of their optical properties hampers their applications. Researchers are encouraged to explore the complexity of carbon nanocolloids.
Article
Spectroscopy
Qianqian Zhu, Jingjing Du, Suxiang Feng, Jianjun Li, Ran Yang, Lingbo Qu
Summary: The study developed a highly effective fluorescence resonance energy transfer (FRET) system by stabilizing CdTe quantum dots (QDs) with cysteamine (CA) and gold nanoparticles (AuNPs) with sodium citrate. Under optimal conditions, the addition of glutathione (GSH) led to the disruption of the FRET system, resulting in the recovery of CdTe fluorescence. The sensing system showed a promising future for highly sensitive and selective GSH detection in human blood plasma samples, with a recovery rate of 99.5-102.3%.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Xiaoqi Tao, Ziyi Liao, Yaqing Zhang, Fei Fu, Mengqi Hao, Yang Song, Erqun Song
Summary: A one-step FRET sensor was developed for specific and sensitive detection of Staphylococcus aureus in food and serum samples. The sensor exhibited a good detection range and low detection limit, as well as good recovery rates and low relative standard derivations in real samples.
CHINESE CHEMICAL LETTERS
(2021)
Article
Food Science & Technology
Yuwei Ren, Lulu Cao, Xiyan Zhang, Rui Jiao, Dexin Ou, Yang Wang, Danfeng Zhang, Yizhong Shen, Na Ling, Yingwang Ye
Summary: In this study, a novel aptamer-based paper sensor was developed for the rapid, sensitive, portable, and specific detection of Vibrio parahaemolyticus in seafood. The sensor utilized the fluorescence resonance energy transfer (FRET) principle and demonstrated successful detection of the target bacteria. The results indicate the potential of this method as a new portable sensor for the detection of V. parahaemolyticus in complex food matrices.
Review
Chemistry, Multidisciplinary
Clemence Cheignon, Ali A. Kassir, Lohona K. Soro, Loic J. Charbonniere
Summary: This article reviews the application of lanthanide complexes in spectroscopy. By utilizing the antenna effect brought by organic ligands, the low brightness caused by forbidden Ln electronic transitions can be overcome. Furthermore, the design progress of nano-objects with multiple lanthanide ions and their spectroscopic properties are discussed.
Article
Chemistry, Physical
Ha Trang Nguyen, Thanh Thao Tran, Vishwa Bhatt, Manjeet Kumar, Ju-Hyung Yun
Summary: Hybrid nanostructures composed of quantum dots and metal nanoparticles have unique optical properties, and can be used to control photoluminescence in optoelectronic applications. By controlling the composition and size of the structure, the interaction between excitons and plasmon can be investigated, and the power conversion efficiency of silicon solar cells can be improved.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Spectroscopy
Qin Ouyang, Yongcun Yang, Shujat Ali, Li Wang, Huanhuan Li, Quansheng Chen
Summary: The study developed a rapid, sensitive, and specific aptasensor based on FRET for detecting Staphylococcus aureus in food. Under optimized conditions, there was a significant linear correlation between fluorescence intensity and S. aureus concentration, demonstrating high detection sensitivity and accuracy.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
