Article
Chemistry, Physical
Guo-Qin Zhang, Zhi-Yuan Yao, Jin Zhang, Hong-Bin Luo, Ya-Ru Kong, Yang Zou, Zheng-Fang Tian, Xiao-Ming Ren
Summary: The study presents a new type of mixed ion-electron conductor, an open-framework chalcogenide, demonstrating versatile proton-electron conductivity depending on environmental conditions. This material shows promising potential for applications in devices relying on mixed ion-electron transport.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Anna Kuzmina, Markus Parzefall, Patrick Back, Takashi Taniguchi, Kenji Watanabe, Achint Jain, Lukas Novotny
Summary: By controlled stacking of graphene layers, the limitation of single-layer graphene as a material for light-emitting devices has been overcome, enabling twist-controlled resonant light emission. Experimental findings show light emission irrespective of the crystallographic alignment between the graphene electrodes, with a spectrally tunable resonant peak in the near-infrared range.
Article
Nanoscience & Nanotechnology
Bingjie Cai, Zunen Xia, Jiaying Wang, Sihong Wu, Xin Jin
Summary: Breast cancer is the most common malignant tumor in women, and early screening can reduce mortality. MiRNAs play a significant role in the early diagnosis and prognosis monitoring of breast cancer. In this study, a biosensor combining RGO and FETs was proposed for highly sensitive detection of miRNA21 in plasma without complex processing steps.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Fabricio A. dos Santos, Nirton C. S. Vieira, Naiara A. Zambianco, Bruno C. Janegitz, Valtencir Zucolotto
Summary: In this study, graphene oxide was reduced in two different ways to produce oppositely charged reduced graphene oxide sheets. By utilizing a layer-by-layer assembly technique, multilayers with different conductivities were successfully fabricated. Moreover, by introducing a biological recognition element, the devices were capable of detecting specific proteins at low concentrations.
APPLIED SURFACE SCIENCE
(2021)
Review
Biotechnology & Applied Microbiology
Bo Hu, Hao Sun, Jinpeng Tian, Jin Mo, Wantao Xie, Qiu Ming Song, Wenwei Zhang, Hui Dong
Summary: With the increasing demand for biomarker detection in wearable electronic devices, flexible biosensors have gained attention due to their high sensitivity, multifunctionality, rapid response, and low cost. Graphene field-effect transistors (GFETs) have emerged as key components for constructing biosensors because of their advantages of flexible substrates. This review provides a concise summary of design strategies for flexible GFET biosensors, highlighting notable advancements in sensing applications of biomolecules and discussing future challenges and prospects in this field.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Yongmin Lei, Rong Zeng, Yu-Tao Li, Meng-Meng Xiao, Zhi-Yong Zhang, Guo-Jun Zhang
Summary: This study developed a photocatalysis-induced renewable reduced graphene oxide nanosheet field effect transistor (rGON-FET) biosensor for real-time monitoring of extracellular Ca2+ release. The biosensor achieved a detection limit down to 100 pM in phosphate-buffered saline (PBS), and 1 nM in fetal bovine serum (FBS), respectively. It also showed high selectivity to Ca2+ in the presence of excessive amounts of other metal ions. Using a photo-responsive self-cleaning TiO2-based nanointerface, this biosensor could be recycled to detect the exocytotic Ca2+ repeatedly.
Review
Biochemical Research Methods
Sabine Szunerits, Teresa Rodrigues, Rupali Bagale, Henri Happy, Rabah Boukherroub, Wolfgang Knoll
Summary: Two-dimensional (2D) materials, especially graphene, have great potential as biosensing channels in field-effect transistor (FET) configuration. However, important considerations such as operation conditions and sensitivity need to be addressed for successful implementation. The configuration of the gFET and the choice of surface ligands greatly influence sensor performance. This article discusses recent efforts in gFET designs for the sensing of nucleic acids, proteins, and virus particles, focusing on strategies for selecting the right bioreceptor.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Zhiling Xu, Shu Yuan, Lu An, Shuiyun Shen, Qian Xu, Xiaohui Yan, Junliang Zhang
Summary: One approach to improving the proton conductivity of nanoscale ultrathin Nafion films is by adjusting the catalyst-ionomer interaction. In this study, ultrathin films were prepared on SiO2 substrates with negative or positive surface charges. The results showed that the negatively charged substrate resulted in faster film formation and increased proton conductivity, while the positively charged substrate led to slower film formation and decreased proton conductivity. The interaction between surface charges and Nafion molecules affected molecular orientation, surface energy, and phase separation, influencing proton conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Hua Kang, Xuejun Wang, Mingquan Guo, Changhao Dai, Renzhong Chen, Lei Yang, Yanling Wu, Tianlei Ying, Zhaoqin Zhu, Dapeng Wei, Yunqi Liu, Dacheng Wei
Summary: The development of a graphene field-effect transistor (g-FET) biosensor has enabled ultrasensitive detection of SARS-CoV-2 antibodies with rapid and precise diagnosis capabilities. This technology holds great promise in future prevention and control of other epidemic outbreaks.
Article
Chemistry, Physical
Nguyen T. T. Binh, Cuong Q. Nguyen, Tuan V. Vu, Chuong Nguyen
Summary: In this study, ultra-thin van der Waals heterostructures were constructed between graphene and a new 2D Janus MoGeSiN4 material to investigate their interfacial electronic properties and tunable Schottky barriers. The results showed that the graphene/MoGeSiN4 heterostructures have high carrier mobility, making them suitable for high-speed nanoelectronic devices. Depending on the stacking patterns, either an n-type or a p-type Schottky contact is formed at the interface, which can be transformed under strain engineering and electric field.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Arka Mukherjee, Vishnu Ottapilakkal, Srikrishna Sagar, Bikas C. Das
Summary: The development of solution-processed transparent transistors with ultralow-voltage operations and a planar architecture represents a potential technological breakthrough for cost-effective and high-performance transparent ultralow-power applications. The transparent oxide field-effect transistors (TO-FETs) demonstrated near-steep-slope nature, low threshold voltage, and high ON/OFF current ratio with hysteresis-free characteristics, making them suitable for future research in quantum and neuromorphic computation fields.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sara H. Mejias, Elena Lopez-Martinez, Maxence Fernandez, Pierre Couleaud, Ana Martin-Lasanta, David Romera, Ana Sanchez-Iglesias, Santiago Casado, Manuel R. Osorio, Jose M. Abad, M. Teresa Gonzalez, Aitziber L. Cortajarena
Summary: This research presents a novel approach to tune the charge transport properties of protein-based materials by utilizing electron-dense AuNPs. By combining controlled self-assembly of a protein building block with templating of AuNPs by the engineered building block, conductive solid films are generated. This bottom-up strategy allows for enhanced conductivity by controlling the structure of the films and the distribution of AuNPs within.
Article
Chemistry, Multidisciplinary
Dong-Gyu Jin, Seung-Hwan Kim, Senung-Geun Kim, June Park, Euyjin Park, Hyun-Yong Yu
Summary: The study presents an artificial synapse device based on a 3-terminal solid-state electrolyte-gated transistor, achieving excellent synaptic characteristics and demonstrating high repeatability and long-term plasticity at low power consumption.
Article
Chemistry, Multidisciplinary
Teresa Rodrigues, Vladyslav Mishyn, Yann R. Leroux, Laura Butruille, Eloise Woitrain, Alexandre Barras, Patrik Aspermair, Henri Happy, Christoph Kleber, Rabah Boukherroub, David Montaigne, Wolfgang Knoll, Sabine Szunerits
Summary: Cardiovascular diseases result in millions of deaths globally, and early identification and prevention can significantly reduce the mortality rate. This study demonstrates the exceptional properties of an aptamer modified graphene-based FET for specific sensing of cardiac troponin I in different bodily fluids. The sensor allows real-time detection of cardiac troponin I within the clinically important range, enabling differentiation between individuals with different risks for myocardial infarction. The results show promise for the development of a point-of-care device for troponin I sensing in clinical settings.
Article
Chemistry, Physical
Yang Sun, Shicai Xu, Tiying Zhu, Jiajun Lu, Shuo Chen, Maomao Liu, Guangcan Wang, Baoyuan Man, Huamin Li, Cheng Yang
Summary: In this study, a photocurrent-modulated FET sensor for DNA hybridization detection was proposed, achieving a detection limit down to attomolar concentrations. The sensor significantly enhances the response signal compared to traditional FET sensors, opening new avenues for further development in biosensing applications.
Article
Chemistry, Multidisciplinary
Eleni Mitoudi Vagourdi, Weiguo Zhang, Ksenia Denisova, Peter Lemmens, P. Shiv Halasyamani, Mats Johnsson
Article
Chemistry, Physical
Victor Krinichnyi, Evgeniya Yudanova, Nikolay N. Denisov, Aleksei A. Konkin, Uwe Ritter, Bernhard Wessling, Alexander L. Konkin, Victor R. Bogatyrenko
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
E. Yudanova, V. Krinichnyi, N. N. Denisov
Summary: The study presents the results of an EPR analysis of an organic photovoltaic composite, demonstrating that the introduction of 2,5-diphenyloxazole as a photoactivator can improve the morphology of the composite and enhance the stability of spin charge carriers. The interaction between polymers and diphenyloxazole in the composite leads to an increase in the number of spins near the band gap of the material.
HIGH ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Victor Krinichnyi, Evgeniya Yudanova, Nikolay N. Denisov, Aleksei A. Konkin, Uwe Ritter, Victor R. Bogatyrenko, Alexander L. Konkin
Summary: The study investigated the behavior of charge carriers in PBDB-T-based photovoltaic systems under different lighting conditions using light-induced electron paramagnetic resonance. The involvement of spins and spin traps in polymer composites was found to play a crucial role in determining the efficiency and functionality of the composite materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Vladimir P. Vasiliev, Roman A. Manzhos, Alexander G. Krivenko, Evgeny N. Kabachkov, Yury M. Shulga
Summary: In this study, a simple strategy was demonstrated for the production of an efficient platinum-free electrocatalyst for the oxygen reduction reaction. Nitrogen-enriched carbon powder was synthesized by a solid-phase method without solvents and high-temperature processing. The high electrocatalytic activity of the material was attributed to the presence of nitrogen atoms and quinone groups on its surface, as indicated by XPS and IR spectroscopy data.
MENDELEEV COMMUNICATIONS
(2021)
Article
Chemistry, Physical
K. Denisova, P. Lemmens, D. Wulferding, P. Berdonosov, V Dolgikh, A. Murtazoev, E. Kozlyakova, O. Maximova, A. Vasiliev, I Shchetinin, F. Dolgushin, A. Iqbal, B. Rahaman, T. Saha-Dasgupta
Summary: Chloromenite, a product of volcanic activity, has been a subject of controversy regarding its crystal structure. Studies have shown a primitive monoclinic cell structure with complex interactions between crystal lattice and spin degrees of freedom, indicating competing interactions or nearly degenerate energy scales. First principles density functional theory calculations have been used to suggest a magnetic structure model for Cu9O2(SeO3)(4)Cl-6 based on new magnetization data and exchange interaction parameters.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Vladimir P. Vasiliev
Summary: The impact of UV irradiation on the wettability of graphene oxide films has been studied, showing that the surface properties can be altered to create a hydrophobic surface. The amphiphilic properties of the graphene oxide film are attributed to the photochemical reduction process.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Vladimir P. Vasiliev, Roman A. Manzhos, Valeriy K. Kochergin, Alexander G. Krivenko, Eugene N. Kabachkov, Alexander V. Kulikov, Yury M. Shulga, Gennady L. Gutsev
Summary: A simple method for synthesizing an effective metal-free electrocatalyst for the oxygen reduction reaction was demonstrated. The nitrogen-doped carbon material obtained showed high activity and excellent long-term stability as an electrocatalyst. The high concentration of active sites on its surface contributes to its electrocatalytic activity.
Article
Chemistry, Physical
Victor Krinichnyi, Evgeniya Yudanova, Nikolay N. Denisov
Summary: In this study, the formation and properties of spin charge carriers in the composites of P3DDT and PC61BM were investigated using light-induced electron paramagnetic resonance and optics methods. The concentration and characteristics of the carriers in the modified composites were found to correlate with the band structure of the added acene molecules.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
V. P. Vasiliev, O. V. Kravchenko, M. V. Solovev, A. S. Zyubin, T. S. Zyubina, A. A. Zaytsev, A. V. Shikhovtsev, L. N. Blinova, Y. A. Dobrovolsky
Summary: In this study, a comparison is made on the composition and properties of Mg(BH4)2(NH3)n (n = 1, 2, 3) complexes obtained through different synthesis methods, and a systematic analysis is carried out on the thermal decomposition characteristics and gas composition released.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
A. S. Zyubin, T. S. Zyubina, O. Kravchenko, M. Solov'ev, V. P. Vasiliev, A. A. Zaitsev, A. Shikhovtsev, Yu A. Dobrovol'sky
Summary: The successive abstraction of H-2 from Mg(BH4)(2) center dot nNH(3) and (Mg(BH4)(2) center dot 3NH(3))(2) complexes has been modeled, showing a significant increase in potential barriers at the third step.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Vladimir P. Vasiliev, Eugene N. Kabachkov, Alexander Kulikov, Roman A. Manzhos, Iurii G. Morozov, Yury M. Shulga
Summary: Nitrogen-doped carbon nanomaterial (NDCNM) was synthesized by grinding a mixture of graphene oxide and melamine in a planetary mill with both balls and milling chamber of zirconium dioxide. The study showed a broad signal at g = 2.08 and a narrow signal at g = 2.0034 in the electron spin resonance spectrum of NDCNM. The synthesized material exhibited ferromagnetic properties with a coercive force of 100 Oe and specific magnetization values at room temperature and liquid nitrogen temperature.
Article
Chemistry, Physical
V. P. Vasiliev, E. N. Kabachkov, A. V. Kulikov, Iu. G. Morozov, Yu. M. Shulga
Summary: A nitrogen-doped carbon material (NDCM) is synthesized by grinding a graphene oxide-melamine mixture in a planetary mill made of zirconium dioxide. The EPR spectrum of the NDCM shows a narrow signal at g = 2.0034 and a broad signal at g = 2.08. Magnetometer studies indicate that the NDCM is a ferromagnetic material with a saturation magnetization of approximately 0.02 emu/g and a coercive force of 100 Oe at room temperature.
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Valeriy K. Kochergin, Natal'ya S. Komarova, Alexander S. Kotkin, Roman A. Manzhos, Vladimir P. Vasiliev, Alexander G. Krivenko
Summary: For the first time, graphene-phosphorene structures were synthesized and their catalytic activity towards the hydrogen evolution reaction was studied. The catalytic activity of phosphorene structures was substantially increased by mixing them with few-layer graphene structures.
C-JOURNAL OF CARBON RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
E. S. Kozlyakova, K. N. Denisova, A. A. Eliseev, A. Moskin, A. Y. Akhrorov, P. S. Berdonosov, V. A. Dolgikh, B. Rahaman, S. Das, T. Saha-Dasgupta, P. Lemmens, A. N. Vasiliev, O. S. Volkova
