Article
Chemistry, Applied
Yunlian Zhang, Md Mehedi Hassan, Yawen Rong, Rui Liu, Huanhuan Li, Qin Ouyang, Quansheng Chen
Summary: An upconversion nanosensor for detecting tetracycline was developed using magnetic separation and electrostatic adsorption, with a linear detection range of 0.5-1000 ng mL(-1) and a detection limit of 0.17 ng mL(-1). This method showed great potential for tetracycline detection in food samples, providing simple operation, high sensitivity, excellent repeatability, and selectivity.
Article
Chemistry, Multidisciplinary
Jackeline Soto-Cruz, Vincent Mukwaya, Mehwish Naz, Peipei Zhang, Maria Jose Lopez-Brenes, Giovanni Saenz-Arce, Oscar Rojas-Carrillo, Hongjing Dou
Summary: In this study, nanoconjugates based on Dex-OA were synthesized and self-assembled into microcapsules through a water-in-oil emulsification process. The morphology of the microcapsules depended on the concentration of Dex-OA nanoconjugates, and they were able to encapsulate and retain fluorescently labeled dextran. This strategy provides a feasible method for constructing microcapsules using natural amphiphilic building blocks.
Article
Spectroscopy
Jie Zhang, Xibin Zhou, Jun Wang, Dawei Fang
Summary: A novel luminescent complex with red color was synthesized for sequential detection of Cu2+ and biothiols. The sensing system showed good selectivity, high sensitivity, and a large Stokes shift.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Biochemistry & Molecular Biology
Krystian Galecki, Agnieszka Kowalska-Baron, Katarzyna E. Nowak, Anna Gajda, Beata Kolesinska
Summary: This study demonstrates the utility of time-resolved fluorescence spectroscopy in detecting subtle changes in the microenvironment of tryptophan chromophore in AOT reverse micelles. The results show evident changes in spectral characteristics and fluorescence decay kinetics when tryptophan and its peptides are inserted into micelles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Geochemistry & Geophysics
Kaitlin Kim Karlotta Kammerlander, Lydia Koehler, Nina Huittinen, Frank Bok, Robin Steudtner, Cathleen Oschatz, Manja Vogel, Thorsten Stumpf, Eike Brunner
Summary: The study investigated f-element sorption on biogenic silica, revealing two different uptake mechanisms, surface adsorption and incorporation/precipitation.
APPLIED GEOCHEMISTRY
(2021)
Article
Spectroscopy
Bo Hu, Li Chen, Zhixin Yu, Yeqing Xu, Jiangdong Dai, Yongsheng Yan, Zhongfei Ma
Summary: Hollow molecularly imprinted fluorescent polymers (@MIPs) were developed for the selective detection of 2,4,6-trichlorophenol (2,4,6-TCP), with a highly luminescent europium complex serving as both fluorophores and functional monomers. The @MIPs showed good selectivity and anti-interference performance, with the potential for selective detection of chlorophenols under low concentration.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Yue-Yang Ma, Ya Li, Hong-Xiang Huang, Dong-Jin Qian
Summary: In this work, luminescent lanthanide complexes were used as visual probes for the detection of toxic and dangerous materials. The Eu3+-dipicolinic acid complex functionalized nanoSiO2 composites and their LB films showed strong and enhanced red fluorescence emissions of Eu3+ ions when immersed in the aqueous TC solution, with high sensitivity and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Khalid Ahmed Alzahrani, Rajan Patel
Summary: The study demonstrates a systematic method for associating diclofenac with hemoglobin and removing DCF from hemoglobin by CTAB micelles. DCF interacts with CTAB micelles and resides in its hydrophobic core according to fluorescence and UV-visible spectral results. CD results suggest that CTAB micelles do not disrupt the structure of hemoglobin, supporting their use as a reliable delivery vehicle for DCF.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Nanoscience & Nanotechnology
Bing Yan, Xueping Quan
Summary: In this study, a novel Eu(III) functionalized crystalline polyimide hydrogel film is synthesized and used for the consecutive detection of spermine and copper ions. The film shows significant fluorescence enhancement in the presence of spermine and can be used as a turn off sensor to quantitatively monitor copper ions. The luminescence response mechanisms to spermine and copper ions have been studied, and a neural network model is constructed to accurately distinguish copper ion concentrations. This work demonstrates the potential of polyimide-based film materials for fluorescence detection.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Daria Kalenichenko, Galina Nifontova, Alexander Karaulov, Alyona Sukhanova, Igor Nabiev
Summary: The engineering of drug delivery systems and contrasting labels for simultaneous imaging and treatment of malignant tumors is essential for developing new tools for cancer therapy and diagnosis. Polyelectrolyte microcapsules (MCs) offer a promising platform for designing multipurpose agents with various components, including high- and low-molecular-weight substances, metal nanoparticles, and organic fluorescent dyes. In this study, size-homogenous MCs with different structures were developed, containing doxorubicin (DOX) and fluorescent semiconductor nanocrystals (quantum dots, QDs), paving the way for delivery of antitumor drugs and fluorescence imaging.
Article
Chemistry, Inorganic & Nuclear
Xi Lv, Jia-Yi Huang, Wan-Qian Huang, Ling-Fei Yang, Zhi-Peng Zhang, Yaohui Liang, Bingjia Xu, Guang Huang, Yong-Cong Ou, Jian-Zhong Wu
Summary: This article describes the synthesis and structural characterization of a europium coordination compound, which exhibits strong intermolecular interactions and high luminescence quantum yield. The compound is explored to be used as a luminescent additive in preservation pigments for traditional Chinese paintings.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Ruihong Yao, Bowen Deng, Zhijian Li, Ling Xie, Jin Li, Kai Tuo, Congbin Fan, Shouzhi Pu
Summary: A valid fluorescence sensor using a covalent organic framework (COF) coupled with Eu3+ is built for the detection of TC. The COF, named Bpydah-Tt-COF, is synthesized via the Schiff base reaction and is rich in N atoms. By post-modification, more Eu3+ can anchor on Bpydah-Tt-COF, resulting in the synthesis of Eu3+-functioned Bpydah-Tt-COF@Eu. This fluorescence sensor significantly improves the detection sensitivity (3.1 nM) and detection range (0.08-35 µM) for TC due to the ability of Eu3+ to identify more target analytes.
Article
Chemistry, Inorganic & Nuclear
Kyangwi P. Malikidogo, Agnes Pallier, Frederic Szeremeta, Celia S. Bonnet, Olivier Seneque
Summary: This study presents two zinc finger peptides, ZFQD(Ln) and ZFQE(Ln) (Ln = Tb or Gd) with Ln(3+) chelate and phosphoserine binding to the Ln(3+) ion. The peptides differ by the amino acid anchorage of the chelate. Both peptides can bind Zn2+ and fold into a specific structure. The luminescence change upon Zn2+ binding is due to the change in hydration number of the Ln(3+) ion and the folding of the peptide.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Multidisciplinary
Magdalena Janik, Monika Hanula, Karen Khachatryan, Gohar Khachatryan
Summary: This article provides an up-to-date overview of polysaccharide-based spherical particles as carriers of active/bioactive substances, with a focus on their applications in the food industry. The review outlines recent research on the synthesis of spherical nanoparticles using polysaccharides as carriers and stabilizers, and discusses the potential application of these nanostructures in the field of food technology.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Xiaozhen Wang, Yanxin Wang, Linjun Huang, Bingyang Li, Xianhang Yan, Zhenzhen Huang, Yao Wang, Matt J. Kipper, Jianguo Tang
Summary: This study investigates the sensitivity of luminescent europium complexes for detecting Cu2+ ions. By combining Eu3+ complexes with SiO2 nanoparticles doped in chitosan, the fluorescence performance is enhanced, enabling the detection of Cu2+ concentrations as low as 10 lmol/L.
MATERIALS & DESIGN
(2021)
