Article
Chemistry, Applied
Abigail J. Van Riesen, Baylie Kalnitsky, Sladjana Slavkovic, Zachary R. Churcher, Philip E. Johnson, Richard A. Manderville
Summary: Fluorescent dyes that bind to DNA aptamers with turn-on emission are useful for biosensor development. In this study, the tunability of phenolic hemicyanine dyes for aptasensor applications was highlighted using the cocaine-binding aptamer (MN4) as a recognition element. The FPhOBtz hemicyanine was found to be a universal fluorescent turn-on probe for DNA three-way junctions (3WJs), but its detection of cocaine was poor due to binding affinity differences with quinine. By replacing the Btz group with the Ind acceptor, the FPhOInd dye showed improved cocaine detection in undiluted urine using the host-guest biosensing platform.
Article
Chemistry, Multidisciplinary
C. S. Quintans, Denis Andrienko, Katrin F. Domke, Daniel Aravena, Sangho Koo, Ismael Diez-Perez, Albert C. Aragones
Summary: External electric fields have been shown to catalyse chemical reactions efficiently, even those inaccessible via wet-chemical synthesis. Single-molecule junctions of carotenoids have been electrically characterized to show distinct conductance signatures for the trans and cis isomers. The electric field is found to polarize the molecule, mix excited states, and promote both isomerization and electron transport within the molecule.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
Holger Fiedler, Vedran Jovic, David R. G. Mitchell, Jerome Leveneur, Emma Anquillare, Kevin E. Smith, John Kennedy
Summary: The evolution of uniaxial strain in Zr+ implanted epitaxial AlN films on Si substrates leads to an expansion of the c-axis in the crystal structure, with the main defects being Zr-Al, V-Al, and V-N. Monte Carlo simulations predict the formation of cation-rich and anion-rich regions within the implantation range, with an anion-rich layer undergoing a polarity inversion. The effective piezoelectric coefficient decreases as the fluence of Zr+ increases, due to strain- and compositionally-induced polarity changes and crystalline damage.
Article
Physics, Applied
Zhao Xining, Zhang Yongwang, Li Bo, Shen Chuangshi, Li Zewei, Zhou Bo
Summary: This paper presents a locally resonant electromechanical metamaterial beam with piezoelectric actuators and sensors, combining piezoelectric shunting technique and negative proportional feedback control strategy, to effectively tune the vibration and wave propagation behavior. By adding negative capacitance in series to the shunt circuit, wider absolute bandgaps can be generated at lower frequencies.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yaorong Chen, Hua-Chun Wang, Yongxiang Tang, Yu Zhou, Longfeng Huang, Jian Cao, Chun Tang, Manxi Zhang, Jia Shi, Junyang Liu, Xiancheng Ren, Yun-Xiang Xu, Wenjing Hong
Summary: The presence of intramolecular hydrogen bonds promotes planarization of molecular structure, leading to higher conductance by reducing dihedral twisting. This offers a new strategy for controlling molecular switches through molecular twisting.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Will T. Kaufhold, Wolfgang Pfeifer, Carlos E. Castro, Lorenzo Di Michele
Summary: The study utilizes metadynamics to sample the free energy landscapes of DNA nanostructures and demonstrates its ability to predict the mechanical response of DNA nanodevices. These findings are significant for the design and application of DNA nanostructures.
Article
Chemistry, Multidisciplinary
Jiaxin Guo, Pan Qi, Yongkang Zhang, Cunlan Guo
Summary: Charge transport through peptides can mimic complex protein processes, allowing for the development of high-performance bioelectronic devices and the understanding of biomolecular recognition and information transfer mechanisms. Modulating charge transport through individual peptides has been achieved, but intermolecular modulation remains challenging. To address this challenge, we used self-assembled monolayers (SAMs) of oligopeptides as models and explored an interfacial amino acid strategy for charge transport modulation. Our results showed that non-covalently interfaced, charged amino acids effectively attenuated charge transport. Analysis revealed that the attenuation was due to decreased molecule-electrodes coupling and reduced polarizability. This efficient strategy advances our understanding of charge transport in biological systems and facilitates the development of future electronics.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Yifeng Qiu, Bei Zhang
Summary: Interface design and energy band engineering are key strategies for improving the thermoelectric conversion efficiency of low dimensional nanoscale devices. In this study, the thermoelectric properties of a TTF molecule coupled with APNRs were investigated using theoretical and simulation methods. It was found that phonon transport can be suppressed in the weak-coupling system and the power factor can be enhanced by connecting thiophene groups.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Aiguo He, Zengzhe Xi, Wei Long, Feifei Guo, Pinyang Fang, Xiaojuan Li
Summary: This study investigates the phase composition, electromechanical properties, and photoluminescence of Er3+-doped PMN-33PT crystal. The crystal exhibits excellent piezoelectric and electromechanical coupling properties, and demonstrates both upconversion and downconversion luminescence. The crystal also shows promising optical temperature sensing performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Masnun Naher, David C. Milan, Oday A. Al-Owaedi, Inco J. Planje, Soren Bock, Juan Hurtado-Gallego, Pablo Bastante, Zahra Murtada Abd Dawood, Laura Rincon-Garcia, Gabino Rubio-Bollinger, Simon J. Higgins, Nicolas Agrait, Colin J. Lambert, Richard J. Nichols, Paul J. Low
Summary: The conductance of a series of 12 conjugated molecular wires, including 6 with ruthenium or platinum center, has been determined. The transmission through these wires is mainly through tunneling at the tail of the HOMO resonance near the middle of the HOMO-LUMO gap. The trends in molecular conductance across the series cannot be explained solely by single-parameter models, but require consideration of the complete molecular junction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jeff C. Hsiao, Tomas Buryska, Eunjung Kim, Philip D. Howes, Andrew J. deMello
Summary: This study systematically investigates the interactions between nuclease enzymes and oligonucleotide-coated gold nanoparticles, revealing new phenomena that can be applied to functional nanosystems. The study also demonstrates that nuclease activity can be tuned by modifying the characteristics of the nanoparticles.
Article
Nanoscience & Nanotechnology
G. R. Berdiyorov, F. M. Peeters, H. Hamoudi
Summary: Using non-equilibrium Green's functional formalism, quantum transport calculations were conducted to study the effect of halogenation on the electronic transport properties of aromatic and alkanethiolate molecules. The results show that different halogen terminal groups have the same influence on conductance but different effects on the asymmetry of the current-voltage characteristics. The explanation of these results can be obtained from the analysis of density of states, transmission spectra and transmission eigenstates.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Engineering, Electrical & Electronic
Souhad M. A. Daraghma, Sara Talebi, Vengadesh Periasamy
Summary: DNA, the blueprint of life, has attracted recent attention in its potential applications in electronics. Through experimental and theoretical studies, a better understanding of the electronic properties of DNA, particularly in the charge transfer process, has been achieved. This research provides a clearer conceptualization of the role of each nitrogenous base in the charge transfer process through the DNA molecule.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xinlei Yao, Maxime Vonesch, Maiwenn Combes, Jean Weiss, Xiaonan Sun, Jean-Christophe Lacroix
Summary: This study demonstrates the preparation of highly stable single-molecule junctions using diazonium grafting approach. The conductance of porphyrin oligomers is relatively efficient and influenced by the presence of cobalt center, showing a long stability around 10 seconds. Random telegraph signals easily record on/off states of SMJs, indicating the potential applications of this approach in constructing stable molecular junctions.
Article
Chemistry, Multidisciplinary
Federico Lombardi, Ji Ma, Dimitris Alexandropoulos, Hartmut Komber, Junzhi Liu, William K. Myers, Xinliang Feng, Lapo Bogani
Summary: The morphology of open-shell molecular radicaloids, particularly the pi-conjugated backbone and side groups, plays a significant role in their quantum properties. Different temperature regions are identified where various structural parts of the molecule or solvent act as the dominant decoherence channel. Despite achieving record quantum coherence values at room temperature, they are still below the intrinsic limits of radicaloids, prompting further exploration towards optimizing quantum performance.
Article
Chemistry, Multidisciplinary
Limin Xiang, Julio L. Palma, Christopher Bruot, Vladimiro Mujica, Mark A. Ratner, Nongjian Tao
Article
Multidisciplinary Sciences
Christopher Bruot, Julio L. Palma, Limin Xiang, Vladimiro Mujica, Mark A. Ratner, Nongjian Tao
NATURE COMMUNICATIONS
(2015)
Article
Chemistry, Multidisciplinary
Limin Xiang, Thomas Hines, Julio L. Palma, Xuefeng Lu, Vladimiro Mujica, Mark A. Ratner, Gang Zhou, Nongjian Tao
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Editorial Material
Multidisciplinary Sciences
Limin Xiang, N. J. Tao
Article
Chemistry, Multidisciplinary
Chaoren Liu, Limin Xiang, Yuqi Zhang, Peng Zhang, David N. Beratan, Yueqi Li, Nongjian Tao
Article
Chemistry, Multidisciplinary
Yueqi Li, Naomi L. Haworth, Limin Xiang, Simone Ciampi, Michelle L. Coote, Nongjian Tao
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Chemistry, Multidisciplinary
Seonah Moon, Rui Yan, Samuel J. Kenny, Yennie Shyu, Limin Xiang, Wan Li, Ke Xu
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Multidisciplinary Sciences
Limin Xiang, Julio L. Palma, Yueqi Li, Vladimiro Mujica, Mark A. Ratner, Nongjian Tao
NATURE COMMUNICATIONS
(2017)
Article
Chemistry, Multidisciplinary
Christopher Bruot, Limin Xiang, Julio L. Palma, Nongjian Tao
Article
Chemistry, Multidisciplinary
Yan Zhou, Lin Ding, Li-Ming Xiang, Jian Pei
AUSTRALIAN JOURNAL OF CHEMISTRY
(2011)