Article
Optics
Tingtao Meng, Yueting Zheng, Denglin Zhao, Hailong Hu, Yangbin Zhu, Zhongwei Xu, Songman Ju, Jipeng Jing, Xiang Chen, Hongjin Gao, Kaiyu Yang, Tailiang Guo, Fushan Li, Junpeng Fan, Lei Qian
Summary: The demonstration of high-resolution quantum-dot light-emitting diodes using transfer printing and Langmuir-Blodgett film technology has been achieved. A honeycomb-patterned layer of wide-bandgap quantum dots is embedded to reduce leakage current, and both red and green QLEDs are demonstrated. The red devices exhibit high brightness and peak external quantum efficiency.
Article
Chemistry, Physical
Shan Yin, Xin He, Xiande Zhang, Yan Hao, Kaipeng Wu, Yun Zhang
Summary: This study describes the fabrication of graphene-wrapped Fe3O4 nanoparticles via a solution-based self-assembly process. The obtained 3D-rGO/Fe3O4 exhibits outstanding Li-storage behaviors as a Li-ion battery anode, and the quantitative kinetic analysis reveals the contribution of both capacitance and diffusion mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Ju Lu, Shenfei Zong, Zhuyuan Wang, Chen Chen, Yizhi Zhang, Hong Wang, Yiping Cui
Summary: This article introduces a dual-labeled graphene quantum dot-based Forster resonance energy transfer nanoprobe suitable for single-molecule localization microscopy imaging, demonstrating fluorescence intensity fluctuations and excellent blinking behavior under specific excitation conditions, with great potential for super-resolution imaging in cells.
Article
Chemistry, Physical
Jiayao Zhu, Luxiang Wang, Xuemeng Gan, Tingting Tang, Fuwei Qin, Wanxia Luo, Qiqi Li, Nannan Guo, Su Zhang, Dianzeng Jia, Huaihe Song
Summary: This study prepares a novel edge-enriched carbon nanofiber fabric through partial hydrolysis of electrospun graphene quantum dots (GQDs)/polyacrylonitrile fabric, and explores its energy storage ability and mechanism. The results show that the fabric exhibits excellent electrochemical activity, ultrafast pseudocapacitive performance, and good cycle stability due to the unique electronic structure and abundant functional groups of the edge sites.
ENERGY STORAGE MATERIALS
(2022)
Article
Physics, Applied
Yimei Tan, Ge Mu, Tianyu Rao, Yuning Luo, Pengfei Zhao, Menglu Chen, Xin Tang
Summary: Silicon (Si) is a widely used semiconductor material due to its suitable bandgap, high reliability, and low-cost production process. However, Si-based photodetectors have limited detection range in the visible and near-infrared (NIR) regions. By integrating perovskite colloidal quantum dots (QDs) with Si/graphene heterojunction, the detection range and response of Si-based detectors can be broadened and improved. The devices exhibit high responsivity and detectivity in the ultraviolet (UV) range, as well as enhanced performance in the visible and NIR ranges.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yanping Wang, Yusen Yang, Dingke Zhang, Tong Zhang, Shiyi Xie, Yu Zhang, Yong-Biao Zhao, Xiaoyun Mi, Xiuling Liu
Summary: This study reports an exciton sensitizing approach to improve the performance of quantum-dot light-emitting diodes (QLEDs) by forming excitons on a phosphorescent-dye-doped layer and transferring their energies to adjacent quantum-dot layer. The fabricated red QLEDs using this method achieve record high efficiency and good stability.
ADVANCED MATERIALS
(2023)
Article
Biophysics
Ganapathi Bharathi, Fangrui Lin, Liwei Liu, Tymish Y. Ohulchanskyy, Rui Hu, Junle Qu
Summary: Ovarian cancer is a deadly disease threatening women's health, and late diagnosis is a major reason for related deaths. Using HE4 as a biomarker can improve the accuracy of ovarian cancer diagnosis. Developing an all-graphene quantum dot FRET probe allows for ratiometric detection of the HE4 ovarian cancer biomarker.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Jianfu Han, Kai Huang, Xuanguang Su, Xiaofei Xiao, Xuemin Gong, Haibin Wang, Juexian Cao
Summary: PbS colloidal quantum dots (CQDs) usually suffer from low carrier mobility due to surface ligand isolation and defects. By combining PbS CQD photodiode with a carbon nanotube (CNT) film field-effect transistor (FET), a transistorized NIR photodetector with high performance and ultrahigh external quantum efficiency (EQE) is achieved.
Article
Materials Science, Multidisciplinary
Jozef Bucko, Frantisek Herman
Summary: The recent exploration of commensurate structure in turbostratic double-layer graphene revealed that large-angle twisting can be managed by decreasing the effective velocity within the energy spectra of single-layer graphene. This study aims at understanding the physics of large-angle twisted double-layer graphene quantum dot systems starting with this result. Interestingly, large twisting angles are found to be suitable for tuning the position symmetry in graphene systems, with a complete overview provided.
Article
Chemistry, Multidisciplinary
M. Hao, Q. Wang, J. Li, W. Xiang, H. Fan, X. Liang
Summary: An environmentally friendly Dy3+-CPB QDsG with high stability under extreme conditions has been synthesized, showing potential as a new luminescent material for the next generation of LCD. The PeQDsG@PI film has a high color gamut, allowing for more detailed object color display on LCD screens.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
George Sarau, Christoph Daniel, Martin Heilmann, Gerd Leuchs, Kerstin Amann, Silke H. Christiansen
Summary: Graphene-based materials are increasingly utilized in novel nanomedicine technologies due to their large contact and loading surfaces as well as high sensitivities to chemical changes. The study on biomolecule-monolayer graphene-kidney tissue hybrid structures revealed a double-sided graphene-enhanced Raman scattering effect and efficient autofluorescence quenching caused by graphene on kidney tissue emissions. These phenomena can be explained by molecular structure and energy level alignment, leading to effective charge transfer.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Materials Science, Multidisciplinary
Yu Wang, Tianyu Zhang, Yunbo Xu, Yuan Wang, Chengyu Guo
Summary: Compared with conventional hot-dip galvanized steel, an optimized strength-ductility combination is achieved by using a combination of continuous galvanizing line (CGL) compatible quenching and austempering (QAT) treatment, as well as pre-quenching. Pre-quenching eliminates certain negative factors and promotes the formation of desirable factors, thereby enhancing the mechanical performance of the samples. The experimental results demonstrate excellent strength-ductility combination.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Abdelnour Alhourani, Jan-Lukas Forde, Lutz Andreas Eichacker, Lars Herfindal, Hanne Roland Hagland
Summary: Graphene-based drug carriers present a promising addition to current cancer drug delivery options, offering stability, binding affinity, and pH-responsive release. The covalent attachment of poly(ethylene glycol) onto pristine graphene enhances the stability and binding affinity of the drug carrier, while also facilitating improved drug release under specific pH conditions.
Article
Chemistry, Analytical
Larissa Franco Silva, Mayara Martins Caetano, Renata Galvao de Lima
Summary: This study synthesized and characterized carbon dots (CDs) and conducted sensing studies for the detection of chloramphenicol (CAP). CDs are nanometer-scale particles produced from carbon sources that exhibit fluorescence emission. The CDs were synthesized through hydrothermal method via microwave irradiation and characterized through spectroscopic techniques. CAP detection was achieved through fluorescence suppression in the presence of CDs, with a linear range of 0.00080-0.0050 mg/ml and a limit of detection (LOD) of 0.00030 mg/ml (0.30 ppm).
Article
Chemistry, Multidisciplinary
Huanyu Xie, Cairou Chen, Jiansen Lie, Ruiyun You, Wei Qian, Shan Lin, Yudong Lu
Summary: In this study, a pollution-free method was used to directly synthesize nitrogen-doped graphene quantum dots, which showed simple, green, and efficient characteristics. By using these quantum dots as fluorescent probes, the detection of potentially harmful CLB in the field of food safety was successfully achieved.
Article
Chemistry, Analytical
Jose Francisco Bergua, Ruslan Alvarez-Diduk, Andrea Idili, Claudio Parolo, Marc Maymo, Liming Hu, Arben Merkoci
Summary: The quantitative detection of different molecular targets is crucial for various activities. This study presents a smartphone-based device that enables high-precision laboratory analysis directly at the point of care.
ANALYTICAL CHEMISTRY
(2022)
Editorial Material
Biotechnology & Applied Microbiology
Carlo Altucci, Rajendra Kurapati, Eden Morales-Narvaez
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Review
Chemistry, Analytical
Tohid Mahmoudi, Tina Naghdi, Eden Morales-Narvaez, Hamed Golmohammadi
Summary: The COVID-19 outbreak exposed weaknesses in current diagnostic systems, especially in predicting and preventing pandemic infectious diseases. Wastewater-based epidemiology (WBE) has proven to be a favorable method for estimating community-wide health and can be efficiently used in smart sensing and management of potential outbreaks, epidemics, and pandemics. This overview explores WBE sensors for detecting PIDs and discusses the philosophy, challenges, and recommendations for implementing smart diagnostics using digital technologies.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Analytical
Ana Rubio-Monterde, Daniel Quesada-Gonzalez, Arben Merkoci
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Annalisa Scroccarello, Ruslan Alvarez-Diduk, Flavio Della Pelle, Cecilia de Carvalho Castro e Silva, Andrea Idili, Claudio Parolo, Dario Compagnone, Arben Merkoci
Summary: The combination of two-dimensional materials and metal nano-particles allows the fabrication of nanocomposites for high-performance smart devices and biosensors. This study proposes a single-step technique to produce reduced graphene oxide conductive films integrating naked noble metal nano-particles. The produced films have been fully characterized and integrated into various sensors to detect different analytes with high accuracy.
Article
Nanoscience & Nanotechnology
Lei Zhao, Giulio Rosati, Andrew Piper, Cecilia de Carvalho Castro e Silva, Liming Hu, Qiuyue Yang, Flavio Della Pelle, Ruslan R. Alvarez-Diduk, Arben Merkoci
Summary: Graphene-based materials have unique properties that make them suitable for electro-chemical biosensing. However, the production of graphene electrodes on a large scale remains challenging. This study presents a simple and fast method for fabricating reduced graphene oxide electrodes using direct writing and stamp-transferring techniques. The biosensors developed using these electrodes demonstrated excellent sensitivity and detection limits for Escherichia coli, making them suitable for real-world applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lourdes Rivas, Arben Merkoci, Liming Hu, Claudio Parolo, Andrea Idili
Summary: The use of nanomaterials as colorimetric labels in point-of-care devices can enhance sensitivity. By optimizing the synthesis of gold and iridium oxide nanoflowers, researchers have achieved improved colorimetric signals and sensitivity, making them potential candidates for the next generation of optical lateral flow assays.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Mariana D. Avila-Huerta, Karina Leyva-Hidalgo, Karen Cortes-Sarabia, Ana K. Estrada-Moreno, Amalia Vences-Velazquez, Eden Morales-Narvaez
Summary: Due to the increasing demand for clinical testing of infectious diseases at the point-of-care, alternative rapid diagnosis tools such as disposable biosensors are being sought after in the global market. In this study, a novel microfluidic paper-based analytical device was developed for the diagnosis of bacterial vaginosis (BV). The device utilized a graphene oxide-coated surface and an immunosensing mechanism to detect the biomarker sialidase, which is overexpressed in BV.
ACS MEASUREMENT SCIENCE AU
(2023)
Article
Chemistry, Multidisciplinary
Cecilia Garcia-Guzman, Eden Morales-Narvaez, Eduardo Coutino-Gonzalez
Summary: The study demonstrates a biosensing platform capable of simultaneous capture and detection of biomolecules by embedding photoluminescent silver clusters in zeolites functionalized with antibodies. The formation of immunocomplex enhances the fluorescence response of the silver clusters, enabling a wash-free and quick biodetection system with optimal results obtained within 5 minutes. This research provides new insights for the development of innovative bioanalytical platforms, including real-time monitoring systems, point-of-care devices, and bioimaging techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Gabriel Maroli, Vernalyn Abarintos, Andrew Piper, Arben Merkoci
Summary: This article reports a method of fabricating nanoband electrodes using low-cost materials and equipment, which have advantages of low cost, fast production, and high flexibility. The research shows that these nanoband electrodes have single molecule sensitivity for the detection of DNA sequences specific to SARS-CoV-2.
Article
Chemistry, Multidisciplinary
Flavio Della Pelle, Qurat Ul Ain Bukhari, Ruslan Alvarez Diduk, Annalisa Scroccarello, Dario Compagnone, Arben Merkoci
Summary: We introduce a CO2 laser plotter-based technology for the production of heterostructures (HTs) comprising reduced graphene oxide (rGO) and 2D transition metal dichalcogenides (TMDs). The laser treatment converts GO into highly exfoliated and conductive rGO decorated with small TMD/TM-oxide nanoflakes. The freestanding LIHT films obtained exhibit excellent performance as self-contained sensors with nanomolar limits of detection and high fouling resistance.
Article
Chemistry, Multidisciplinary
Yang Qiuyue, Emily P. Nguyen, David Panacek, Veronika Sedajova, Vitezslav Hruby, Giulio Rosati, de Carvalho Castro Silva Cecilia, Aristides Bakandritsos, Michal Otyepka, Arben Merkoci
Summary: Heavy metal pollutants are highly toxic and pose great concern in environmental monitoring. Electrochemical detection, hindered by mutual interferences of heavy metal ions, is a main technique with limited sensitivity to Cd2+ ions. This study introduces a metal-free and sustainable nanomaterial, cysteamine covalently functionalized graphene (GSH), which significantly enhances the sensitivity of screen-printed carbon electrode (SPCE) to Cd2+ ions while maintaining sensitivity to other heavy metals. The enhancement is attributed to the grafted thiols on the GSH sheets with strong affinity to Cd2+ ions, based on Pearson's principle. The GSH-modified SPCE also exhibits high reusability and outperforms existing SPCEs modified by non-covalently functionalized graphene derivatives. The GSH-SPCE is successfully validated in tap water.
Review
Chemistry, Analytical
Amauri Horta-Velazquez, Fernando Arce, Erika Rodriguez-Sevilla, Eden Morales-Narvaez
Summary: In this article, we review how scientists and technologists are using SERS and AI for accurate diagnostics. By analyzing SERS spectra, molecular information is extracted to generate diagnostic models or staging platforms for disease. The applications of AI-assisted SERS diagnostics are discussed, and the future prospects of advancing this field are explored.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Massimo Urban, Giulio Rosati, Gabriel Maroli, Flavio Della Pelle, Andrea Bonini, Laszlo Sajti, Mariangela Fedel, Arben Merkoci
Summary: This study presents a new sintering method called click sintering, which uses a catalytic reaction to enhance and tune the nanostructuration of gold nanoparticle inks. This one-step approach allows for the creation of conductive and electroactive nanoporous thin films without the need for complex post-treatments. The properties of the film can be adjusted by controlling the reaction conditions. The click sintering strategy offers a rapid, easy, and inexpensive technique for fabricating functional nanostructures, with potential applications in flexible electronics, biosensing, energy, and catalysis.
Article
Biochemical Research Methods
Liming Hu, Enric Calucho, Celia Fuentes-Chust, Claudio Parolo, Andrea Idili, Ruslan Alvarez-Diduk, Lourdes Rivas, Arben Merkoci
Summary: This manuscript highlights the importance of better characterised bioreceptors for the development of point-of-care diagnostic devices. The challenges faced in finding suitable antibodies for the detection of SARS-CoV-2 nucleoprotein in a lateral flow assay are discussed.
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
