Article
Chemistry, Physical
Xiaodong He, Jialiang Chen
Summary: This study used molecular dynamics simulations to investigate the properties of ionic motion in negatively charged conical nanopores with a fixed tip radius. The effects of electric fields, angles, and cation species on ionic current rectification (ICR) were studied. The results showed that the ion current was mainly contributed by the flow of cations in ultra-narrow nanopores, and the rectification ratio increased linearly with the angle, slowed down and stabilized with the electric fields, and depended on the cation species. The study provides valuable insights into the behavior of ions in ultra-narrow conical nanopores and the mechanisms behind ICR.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Doyel Pandey, Pranab Kumar Mondal, Somchai Wongwises
Summary: The salinity gradient energy, also known as 'blue energy', is a promising and abundant source of clean energy, which can serve modern society effectively. In this article, we analyze the use of reverse electrodialysis (RED) for harnessing salinity gradient energy in a single conical nanochannel with a pH-tunable polyelectrolyte layer (PEL) on the inner surfaces. By focusing on the uniqueness of the solution pH in the connecting reservoirs, we explore strategies to increase the power density. Our results show a significant enhancement in both power density and efficiency through the proposed approaches. The analysis provides valuable insights for fabricating state-of-the-art nanodevices for blue energy harvesting.
Article
Chemistry, Physical
Po-Yen Chuang, Jyh-Ping Hsu
Summary: Nanopores functionalized with polyelectrolyte brushes have significant impact on improving the performance of solid-state nanopore-based devices. This study theoretically investigates the influence of pH, types of polyelectrolyte layer, and salt concentration on the ion transport behavior of the nanopore. The study also explores the mechanisms behind these influences. The results reveal that the diffusion flux of the polyelectrolyte layer is the most important factor affecting current performance and the selectivity of the nanopore can undergo a reversal under specific conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Multidisciplinary
Doyel Pandey, Somnath Bhattacharyya
Summary: This study investigated the impact of solid polarization of a dielectric membrane on ion transport in a conical nanopore, highlighting the importance of considering solid polarization in analyzing electroosmotic flow and ion transport in such systems.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Biochemistry & Molecular Biology
Yongqi Zhang, Jia Man, Jiali Wang, Jianing Liu, Xinzhong Song, Xiaohan Yu, Jianyong Li, Ruijian Li, Yinghua Qiu, Jianfeng Li, Yuguo Chen
Summary: This study developed heparinized surfaces on PVC substrates using plasma treatment technology and chemical grafting method. The heparinized surfaces not only reduced thrombosis but also decreased side effects of anticoagulants. Sodium alginate and carboxymethyl chitosan interlayers significantly increased the graft density of heparin, improving its anticoagulant effects and hemocompatibility. The CCS/low-molecular-weight heparin surface showed the best anticoagulant properties. The heparinized surfaces prepared in this study have great potential in anticoagulant treatment for medical devices.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Electrochemistry
Chin Chan, Jyh-Ping Hsu
Summary: The transport of ions in biological cells is regulated by salt concentration and temperature in ion channels. The accumulation and depletion of ions in a conical nanopore are mainly influenced by the shielding effect of the charged region, not the temperature. Under certain conditions, the ion selectivity and rectification capability of the nanopore can change.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Bianyang He, Yaoyao Zhang, Bojie Li, Yuhan Chen, Lei Zhu
Summary: Carboxymethyl chitosan (CMCS) aerogels prepared through freeze drying technology showed excellent oil adsorption performance and stability in multiple cycles after hydrophobic modification.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Patricio Ramirez, Javier Cervera, Jose A. Manzanares, Saima Nasir, Mubarak Ali, Wolfgang Ensinger, Salvador Mafe
Summary: Experimental study of the electrical conductance-voltage curves of charged conical nanopores in different ionic concentrations. Investigation of the effects of salt and salt mixtures on conductance, including the valency of ions, pore charge asymmetry, and pore charge inversion phenomena. Description of how multivalent ions can tune the nanopore conductance and their impact on ionic conductance and negative differential conductance phenomena.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Materials Science, Ceramics
Qinghua Wei, Daocen Sun, Mingyang Li, Jiayi Zhou, Rongbin Yang, Juan Zhang, Weihong Chai, Yanen Wang
Summary: In this research, carboxymethyl chitosan (CMCS) was proposed to modify the poor mechanical properties of 3D printed HA bone scaffold. HA and HA/CMCS composite ceramic scaffolds were printed using piezoelectric inkjet 3D printing technology and their properties were investigated. The results showed that incorporating CMCS improved the toughness and bioactivity of the scaffold, with HA/CMCS sample containing 3 wt% CMCS showing the best results.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Nils Ulrich, Anne Spende, Loic Burr, Nicolas Sobel, Ina Schubert, Christian Hess, Christina Trautmann, Maria Eugenia Toimil-Molares
Summary: Etched ion-track polycarbonate membranes with conical nanochannels coated with Al2O3, TiO2, and SiO2 thin films by ALD are used to fabricate two functional structures: arrays of free-standing conical nanotubes for drug delivery and wettability regulation, and single nanochannel membranes for nanofluidic applications with adjustable isoelectric points.
Article
Nanoscience & Nanotechnology
Jun Li, Kaiping Zhang, Xiaoye Zhao, Dongqing Li
Summary: This paper presents a design strategy to fabricate pH-responsive artificial ion channels with various ion transport features based on a single PDMS nanochannel. The ion channels can switch between opened, closed, and ionic diode states under different pH stimuli. Four different ion transport features can be achieved in a triple gated ion channel system. This design has potential applications in energy conversions, active ion transport control, and biological analysis.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Natjaya Ekapakul, Tharit Lerdwiriyanupap, Theeranun Siritanon, Chantiga Choochottiros
Summary: The factors influencing the formation of DN hydrogel were studied using a water-based, environmentally friendly system. The hydrogel was prepared by crosslinking poly-saccharide-based polymer carboxymethyl chitosan (CMCS) and poly(ethylene glycol) via an ionic crosslinking reaction and a radical crosslinking reaction. The optimum hydrogel was obtained with 9.5%v/v of 1000PEGGMA, CMCS 5%w/v, and CaCl2 3%w/v.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Hai-qiang Zhang, Jiale Zhou, Hai Wang, Dongwei Lan, Yan Peng, Zhi Li, Fangyin Dai
Summary: The blended KC/CMCH membranes with dual-ion crosslinking by Cu2+ and K+ showed compact structure, improved uptake capacity and mechanical properties. These membranes exhibited good antimicrobial property against gram-positive and gram-negative bacteria and good cytocompatibility.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Review
Chemistry, Multidisciplinary
Xin Guan, Haijuan Li, Limei Chen, Guohua Qi, Yongdong Jin
Summary: A glass capillary-based nanopore (G-nanopore) with tapered tip and flexible surface modifications provides a powerful sensing platform for diverse biological measurements. It enables noninvasive single molecule and subcellular single cell detections and shows potential for cancer diagnosis and treatment applications. However, current bottlenecks limit its widespread use in clinical applications.
Article
Chemistry, Analytical
Jinmin Wang, Limin Zhao, Bing Yan
Summary: Developing facile and reliable analytical technologies for disease diagnosis is crucial but challenging. In this study, a dual channel-driven fluorescence sensor was designed for simultaneous analysis of HVA and Al3+, offering promising prospects for accurate and non-invasive disease diagnosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Biochemical Research Methods
Min Chen, Shuo-Hui Cao, Yao-Qun Li
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Physical
Yan-Yun Zhai, Qian Liu, Wei-Peng Cai, Shuo-Hui Cao, Li-Xiang Zhang, Yao-Qun Li
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Chemistry, Physical
Yan Zhao, Yi-Hong Liu, Shuo-Hui Cao, Muhammad Ajmal, Yan-Yun Zhai, Xiao-Hui Pan, Min Chen, Yao-Qun Li
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Yuan-Yi Wu, Li-Dong Chen, Xiu-Hong Cai, Yan Zhao, Min Chen, Xiao-Hui Pan, Yao-Qun Li
Summary: This study demonstrated a smart pH-modulated two-way photoswitch that can reversibly switch ion transport under alternating light exposure over a wide pH range. The photoswitch efficiently and flexibly regulated the direction and extent of ion transport based on the pH. This two-way photoswitch showcases the considerable potential of photoresponsive polymers for intelligent bionic nanochannel devices in various applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xiao-Hui Pan, Min Chen, Shuo-Hui Cao, Zi-Qian Xu, Zhao Li, Yao-Qun Li
Summary: The novel technique of plasmon coupling enhanced micro-spectroscopy and imaging successfully discriminates basal and lateral membrane domains of a single cell, allowing for selective excitation and distinction by adjusting the incident angle of laser irradiation.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Analytical
Lin-Tao Xu, Min Chen, Yu-Hua Weng, Kai-Xin Xie, Jin Wang, Shuo-Hui Cao, Yao-Qun Li
Summary: We proposed a universal label-free fluorescent nanofilm sensor based on surface plasmon coupled emission (SPCE), which can be easily prepared and widely used for in situ studies, especially in nanomaterial growth processes.
ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yan Zhao, Shuo-Hui Cao, Jia-Dai Wang, Na Li, Guo-Chun Lin, Yao-Qun Li
Summary: This study proposes a polarization- and angle-dependent plasmonic synchronous fluorescence spectroscopy method that can resolve UV-vis plasmon mediated molecular couplings, even at vibrational sublevels. By scanning excitation and emission wavelengths in high resolution, the vibrational transitions coupled to the plasmons can be identified, contributing to the development of efficient light-emitting devices.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Li-Dong Chen, Yuan-Yi Wu, Di Zhang, Shuo-Hui Cao, Lin-Tao Xu, Yao-Qun Li
Summary: This work presents a unique nano-switch based on functional copolymer brushes, which can be modulated by three environmental stimuli (light, pH and temperature) and efficiently control ion transport properties. The synergistic cooperation of the triple factors can fully activate the ionic gate and reversibly control the gating direction. Moreover, this nano-switch can switch transport properties on demand in the face of complex combinations of different factors.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Analytical
Jia-Rong He, Jia-Wen Wei, Shi-Yi Chen, Na Li, Xiu-Di Zhong, Yao-Qun Li
Summary: In this study, a machine learning-assisted synchronous fluorescence sensing approach was developed for rapid and simultaneous quantitative detection of two important pesticides in red wine. The approach achieved accurate results without the need for complicated pretreatment procedures, providing a new solution for complex multi-component analysis.
Article
Chemistry, Analytical
Kai-Xin Xie, Zhao Li, Jia-Hua Fang, Shuo-Hui Cao, Yao-Qun Li
Summary: Surface plasmon-coupled emission (SPCE) is a signal enhancement technology that has shown excellent performance in bioimaging. By controlling the excitation angles, the imaging depth can be selectively modulated in a variable-angle nanoplasmonic fluorescence microscopy (VANFM) system based on SPCE. The introduction of Au-Ag alloy nanoshuttles improves imaging performance by mediating the plasmonic properties, leading to better imaging brightness, signal-to-background ratio, and axial resolution.
Article
Chemistry, Multidisciplinary
Jin Wang, Yan-Yun Zhai, Xiao-Hui Pan, Lin-Tao Xu, Zhao Li, Shuo-Hui Cao, Yao-Qun Li
Summary: In this study, a surface plasmon coupled emission (SPCE) technique is proposed to address the interference problem in complex fluorescence and Raman dual-mode bio-detection. By measuring at different angles, the Raman spectra that are usually interfered by strong fluorescence signals can be distinguished, resulting in improved collection efficiency and absolute intensity.
Article
Chemistry, Physical
Xiao-Hui Pan, Shuo-Hui Cao, Min Chen, Yan-Yun Zhai, Zi-Qian Xu, Bin Ren, Yao-Qun Li
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Meeting Abstract
Chemistry, Multidisciplinary
Yan Zhao, Yi-Hong Liu, Shuo-hui Cao, Yao-Qun Li
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Meeting Abstract
Chemistry, Multidisciplinary
Min Chen, Xiao-Hui Pan, Qian Liu, Yao-Qun Li
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Nanoscience & Nanotechnology
Shuo-Hui Cao, Yu-Hua Weng, Kai-Xin Xie, Zheng-Chuang Wang, Xiao-Hui Pan, Min Chen, Yan-Yun Zhai, Lin-Tao Xu, Yao-Qun Li
ACS APPLIED BIO MATERIALS
(2019)
