Nanoscience & Nanotechnology

Article Biophysics

Plasmonic digital PCR for discriminative detection of SARS-CoV-2 variants

Kyung Ho Kim, Eunsu Ryu, Zinah Hilal Khaleel, Sung Eun Seo, Lina Kim, Yong Ho Kim, Hyun Gyu Park, Oh Seok Kwon

Summary: We have developed a novel strategy for discriminative detection of SARS-CoV-2 variants using the plasmonic photothermal effect of gold nanofilms and digital polymerase chain reaction (dPCR) technology. With this method, we were able to detect the delta and omicron variants with high sensitivity within 25 minutes from COVID-19 patients' clinical samples, making it a rapid and accurate point-of-care testing tool.

BIOSENSORS & BIOELECTRONICS (2024)

Article Chemistry, Applied

Efficient selective hydrogenation of terminal alkynes over Pd-Ni nanoclusters encapsulated inside S-1 zeolite

Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma

Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Chemistry, Applied

An eco-friendly method for the scale-up synthesis of ZSM-5 Zeolite

Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang

Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Biophysics

Therapeutic drug monitoring mediated by the cooperative chemical and electromagnetic effects of Ti3C2TX modified with Ag nanocubes

Danni Xue, Xing Dai, Jialong Zhao, Jiayao Zhang, Huan Liu, Kui Liu, Tao Xu, Chenjie Gu, Xingfei Zhou, Tao Jiang

Summary: In this study, a dual-enhancement SERS substrate based on Ti3C2TX and Ag nanocubes was fabricated for precise quantification of ritonavir and ibrutinib in serum. The formation of numerous electromagnetic hotspots between Ag nanocubes facilitated effective photo-induced charge transfer. The composite substrate showed excellent sensitivity, achieving low detection limits and high recoveries, making it promising for monitoring and identification of clinical blood drug concentration.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

HOF-101-based dual-mode biosensor for photoelectrochemical/ electrochemiluminescence detection and imaging of oxytetracycline

Hongkun Li, Qianqian Cai, Yali Xue, Guifen Jie

Summary: A unique dual-mode biosensor based on hydrogen-bonded organic frameworks (HOF-101) was constructed for ultrasensitive detection and imaging of oxytetracycline (OXY), using polydopamine nanoparticles (PDAs) as quencher. PDAs, with good biocompatibility and light absorption ability, were introduced onto the surface of HOF-101 to quench its electro-chemiluminescence (ECL) and photoelectrochemical (PEC) signals, achieving ultrasensitive detection of OXY.

BIOSENSORS & BIOELECTRONICS (2024)

Article Chemistry, Applied

Improved hydrothermal stability of LTA zeolite membrane by forming an acrylamide protective layer for pervaporation dehydration of water-rich acrylamide and ethanol solutions

Xiaowei Wu, Yuqin Li, Mingyu Peng, Wenkai Xu, Tian Gui, Xiangshu Chen, Hidetoshi Kita

Summary: This study successfully fabricated high selective LTA zeolite membranes and demonstrated their excellent hydrothermal stability and separation performance in the dehydration of water-rich acrylamide solutions. The results revealed that acrylamide could form a protective layer on the membrane surface, effectively inhibiting the degradation of zeolite crystals by high-temperature water. Furthermore, the application of LTA zeolite membrane in the separation of other water-rich solutions could be expanded by adding a small amount of acrylamide.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Biophysics

Exosome-tuned MOF signal amplifier boosting tumor exosome phenotyping with high-affinity nanostars

Xiaojie Qin, Binqi Wei, Yuanhang Xiang, Hao Lu, Fengfei Liu, Xinchun Li, Fan Yang

Summary: This study utilizes the coordination between exosomes and metal-organic frameworks to develop an ultrasensitive detection method for tumor-derived exosomes. The method is highly specific and fast, allowing for the profiling of different cancer types and accurate diagnosis in a clinical setting. This strategy provides new opportunities for functional materials assembly and precision diagnostics.

BIOSENSORS & BIOELECTRONICS (2024)

Article Chemistry, Applied

A fast synthetic strategy for quick preparation and optimization of platelike MFI crystals

Pingping Li, Lei Han, Donghun Kim, Kemal Celebi

Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Chemistry, Applied

Sulfonic acid functionalized Al-based MIL-101-NH2 modified separator for lithium-sulfur batteries

Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng

Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Review Chemistry, Applied

A review of series transition metal-based MOFs materials and derivatives for electrocatalytic oxygen evolution

Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang

Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Chemistry, Applied

Investigating the impact of amine-functionalized ZSM-5 with varying Si/Al ratios on the adsorption of radioactive gaseous iodine

Rui-Li Yu, Qian-Fan Li, Hao-Ran Sun, Zhen-Le Li, Liang-Zhi Xia

Summary: This study involves impregnating Tetraethylenepentamine (TEPA) into ZSM-5 zeolite to enhance the adsorption performance towards radioactive iodine. The findings reveal potential interactions between amine groups and iodine.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Biophysics

CRISPR-Cas12a powered hybrid nanoparticle for extracellular vesicle aggregation and in-situ microRNA detection

Tenghua Zhang, Zihui Xie, Xiaohe Zheng, Yuxin Liang, Yao Lu, Hankang Zhong, Feiyang Qian, Yuqing Zhu, Ruiting Sun, Yan Sheng, Jiaming Hu

Summary: This study reports a technology based on cationic lipid-polymer hybrid nanoparticles for efficient extracellular vesicle (EV) enrichment and in-situ detection of internal microRNAs. The technology demonstrates high EV enrichment efficiency and sensitive internal RNA detection, making it potentially useful for early pancreatic cancer diagnosis.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

An integrated centrifugal microfluidic strategy for point-of-care complete blood counting

Reza Khodadadi, Manouchehr Eghbal, Hamideh Ofoghi, Alireza Balaei, Ali Tamayol, Karen Abrinia, Amir Sanati-Nezhad, Mohamadmahdi Samandari

Summary: This paper introduces an integrated portable centrifugal microfluidic system that automates cell and fluid manipulation for complete blood counting (CBC) analysis at the point-of-care (POC). The system utilizes a specially designed microfluidic disc for cell separation, solution metering and mixing, and cell counting, and is equipped with a custom script for automated quantification of cells. The proposed method shows a strong correlation with the gold standard hematology analyzer for various blood parameters. The portable system offers simplicity, affordability, and low power consumption, making it a potential solution for improving healthcare delivery in resource-limited settings and remote areas.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

A wearable and capacitive sensor for leaf moisture status monitoring

Bo Peng, Xiaoxue Liu, Yao Yao, Jianfeng Ping, Yibin Ying

Summary: This study proposed wearable electrodes for real-time monitoring of leaf capacitance, which showed good flexibility and stability. The capacitance value was found to be positively correlated with leaf moisture content and showed higher value at night compared to daytime. The growth and physiological parameters of the plant were not significantly affected during capacitance monitoring using the wearable electrodes. These results demonstrate the potential of wearable electrodes for real-time and precise monitoring of plant physiological information in the future.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Self-calibrating surface-enhanced Raman scattering-lateral flow immunoassay for determination of amyloid-β biomarker of Alzheimer's disease

Xinyu Liu, Xiaoming Su, Mingyang Chen, Yangcenzi Xie, Ming Li

Summary: Rapid early diagnosis of Alzheimer's disease is crucial, but challenging. In this study, a self-calibrating biosensor based on SERS-LFIA technique is developed for accurate AD diagnosis. It has high sensitivity, excellent anti-interference capability, lowcost and easy operation.

BIOSENSORS & BIOELECTRONICS (2024)

Article Chemistry, Applied

Understanding the vacuum autoreduction behavior of Cu species in CuCl/ NaY adsorbent for CO/N2 separation

Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi

Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)

Article Biophysics

Movable toehold for leakless self-assembly circuits

Xiaole Han, Hongyan Yu, Li Zhang, Zhi Weng, Ling Dai, Li Wang, Lin Song, Zhongzhong Wang, Rong Zhao, Luojia Wang, Weitao Wang, Dan Bai, Yongcan Guo, Ke Lv, Guoming Xie

Summary: This study proposes a movable toehold principle to suppress leakage and accelerate catalytic reactions. The catalytic hairpin assembly with movable toehold exhibits a good signal-to-background ratio, robustness, and specificity, and demonstrates satisfactory performance in complex circuits.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Aptamer-enhanced particle aggregation inhibition assay for simple homogeneous protein detection using DNA aptamer and thermo-responsive magnetic nanoparticles

Shunsuke Rokutani, Kentaro Hiraka, Hiroshi Saitoh, Taiki Saito, Yoshihiko Nonaka, Kinuko Ueno, Kaori Tsukakoshi, Noriyuki Ohnishi, Kazunori Ikebukuro

Summary: In this study, a DNA aptamer-based thermo-responsive magnetic particle (TM) assay was developed as a simple and sensitive protein detection system. The research demonstrated that the modification of aptamers on TM successfully controlled the aggregation behavior and enabled the detection of target proteins. By using capturable aptamers, the sensitivity and limit of detection of the TM assay were improved.

BIOSENSORS & BIOELECTRONICS (2024)

Article Biophysics

Gas-responsive two-dimensional metal-organic framework composites for trace visualization of volatile organic compounds

Huayun Chen, Zhiheng You, Yuhui Hong, Xiao Wang, Mingming Zhao, Yushi Luan, Yibin Ying, Yixian Wang

Summary: This study developed a colorimetric sensor array using gas-responsive two-dimensional metal-organic framework (MOF) composites for highly sensitive detection of volatile organic compounds (VOCs). The dye/Zn-2(bim)(4) composites-based sensor arrays showed enhanced sensitivity and anti-interference properties. The findings demonstrate the potential use of dye/Zn-2(bim)(4) sensor arrays for early perception of plant diseases.

BIOSENSORS & BIOELECTRONICS (2024)

Article Chemistry, Applied

Mesoporous configuration effects on the physicochemical features of hierarchical ZSM-5 supported cobalt oxide as catalysts in methane partial oxidation

Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi

Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.

MICROPOROUS AND MESOPOROUS MATERIALS (2024)