Article
Physics, Applied
Patrick Barfield, Vinh Tran, Vikram Nagarajan, Maya Martinez, Amirari Diego, Derek Bergner, Alessandra Lanzara, James G. Analytis, Claudia Ojeda-Aristizabal
Summary: In this work, nanoflake of alpha-RuCl3 was studied through high impedance measurements. The results showed a significant change in transport mechanism at low temperatures and the observation of excitations predicted by the Kitaev-Heisenberg model. This work demonstrated the possibility of realizing the predicted excitations in alpha-RuCl3 at low temperatures and provided information about the transport mechanisms in this material in a wide temperature range.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Leopoldo Mejia, Ulrich Kleinekathoefer, Ignacio Franco
Summary: Under resonant transport conditions, the accuracy of the Landauer approximation depends on intramolecular interactions, while under nonresonant conditions, the emergence of transport routes beyond Landauer is determined by charging and discharging processes at the electrode-molecule interface. In both cases, decreasing the rate of charge exchange between the electrodes and molecule and increasing the interaction strength with the thermal environment result in decreased accuracy of Landauer.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Yasutomo Kajikawa
Summary: This study performs simultaneous fits to the reported experimental data on the temperature dependence of electrical conductivity, Seebeck coefficient, and Hall coefficient on three samples of nondegenerate p-type Cu2GeSe3, taking into account hopping conduction mechanisms. The results show that even at room temperature, hopping conduction significantly affects the Seebeck coefficient and Hall coefficient.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Optics
Chang-Kai Li, Jian-ming Xue, Xiao-ping Ouyang, Feng-Shou Zhang
Summary: A velocity dependent charge resonance was observed in slow initial bare ions channeling through rocksalt crystalline AlN, resulting in significantly enhanced stopping. This charge resonance process primarily influences the charge accumulation in the pre-equilibrium state, while having marginal influence on the excitation of bound state charge.
Article
Chemistry, Multidisciplinary
Bingjia Xu, Zicun Song, Minmin Zhang, Qingqing Zhang, Long Jiang, Cao Xu, Lijun Zhong, Changlin Su, Qiqi Ban, Cong Liu, Fengqiang Sun, Yi Zhang, Zhenguo Chi, Zujin Zhao, Guang Shi
Summary: In this study, a pair of axially chiral organic enantiomers were successfully synthesized through a one-pot method, showing their luminescent activities and thermochromism in the crystalline state. Interestingly, different thermochromic behaviors were observed in cocrystals formed by different enantiomers. This work also introduced a new method of information encryption based on the thermochromism of organic enantiomers and their racemate, potentially expanding the application scope of chiral organic luminogens.
Article
Multidisciplinary Sciences
Jorge Trasobares, Juan Carlos Martin-Romano, Muhammad Waqas Khaliq, Sandra Ruiz-Gomez, Michael Foerster, Miguel Angel Nino, Patricia Pedraz, Yannick. J. Dappe, Marina Calero de Ory, Julia Garcia-Perez, Maria Acebron, Manuel Rodriguez Osorio, Maria Teresa Magaz, Alicia Gomez, Rodolfo Miranda, Daniel Granados
Summary: This study reports the development of hybrid molecular graphene field effect transistors (m-GFETs) based on 11-(Ferrocenyl)undecanethiol (FcC(11)SH) micro self-assembled monolayers (mu SAMs) and high-quality graphene (Gr), enabling operando spectroscopy and the implementation of optoelectronic logic gates.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Daniel T. Yonemoto, Christopher M. Papa, Sara Sheykhi, Felix N. Castellano
Summary: This study introduces a series of cadmium selenide/1-pyrenecarboxylic acid nanomaterials to investigate the photophysical behavior of quantum-dot/molecule composites, demonstrating strong thermally activated delayed photoluminescence by tailoring the energy gap between different levels. The control of the average decay time constant of the photoluminescence from CdSe585 is achieved by adjusting the surface-bound PCA(n) chromophores, shifting the triplet excited state equilibrium from the CdSe585 to the PCA molecular triplet reservoir.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Physics, Multidisciplinary
Nooshin Aghashahi, Mohammad Reza Mohammadizadeh, Parviz Kameli
Summary: This study analyzed samples obtained by reducing Rutile TiO2 with Mg to determine the suboxide phases and dominant structural phase in each sample. The results showed that increasing the heat treatment temperature or the amount of reducing agent led to an increase in the amount of suboxide phases and TiO being the main phase in samples with low electrical resistivity. The hopping conduction mechanism was investigated and characterized, showing a transition from nearest neighbor hopping to Mott-variable range hopping conduction regimes at around 65 K. The Efros-Shklovskii VRH conduction process was observed at low temperatures below 18 K. The obtained hopping parameters indicated that the low resistivity samples were close to the metal-insulator transition. In samples with high electrical resistivity, the hopping conduction relations did not fit the resistivity-temperature curves, possibly due to resistive switching behavior and changes in conductivity properties depicted in the current-voltage curve.
Article
Chemistry, Multidisciplinary
Stefano Ippolito, Francesca Urban, Wenhao Zheng, Onofrio Mazzarisi, Cataldo Valentini, Adam G. Kelly, Sai Manoj Gali, Mischa Bonn, David Beljonne, Federico Corberi, Jonathan N. Coleman, Hai I. Wang, Paolo Samori
Summary: In this article, the charge-transport mechanisms of printed devices based on covalent MoS2 networks are studied, comparing the effects of aromatic versus aliphatic dithiolated linkers. The results show that aliphatic systems lead to 3D variable range hopping, while aromatic linkers exhibit nearest neighbor hopping. The improved performance of devices functionalized with pi-conjugated molecules is attributed to enhanced interflake electronic connectivity and additional percolation paths.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mengdi Sun, Zemin Zhang, Jianlong Yang, Qiujin Shi, Mingzheng Xie, Weihua Han
Summary: Nano-sized BiVO4 with particle size ranged from 27 nm to 57 nm was successfully synthesized in this work, showing enhanced activity for hydrogen generation by water splitting compared to bulk BiVO4. The improvements in activity are mainly attributed to the reduced particle size, resulting in elevated conduction band, enlarged specific surface area, and promoted charge separation.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Carlos Romero-Muniz, Maria Ortega, J. G. Vilhena, Ismael Diez-Perez, Ruben Perez, Juan Carlos Cuevas, Linda A. Zotti
Summary: Through experiments on electron transport through metal-protein-metal junctions, it was found that when the blue-copper azurin is not deformed and retains its pristine structure, the end-to-end tunneling probability is exceedingly small and does not give rise to any measurable electrical current. On the other hand, in certain scenarios, higher tunneling probabilities are achievable by compressing the protein with the STM tip or contacting the protein sideways.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Energy & Fuels
Han Gao, Qianwen Lu, Ke Xiao, Qiaolei Han, Renxing Lin, Zhou Liu, Hongjiang Li, Ludong Li, Xin Luo, Yuan Gao, Yurui Wang, Jin Wen, Zhigang Zou, Yong Zhou, Hairen Tan
Summary: All-perovskite tandem solar cells show rapid efficiency improvement but face thermal instability issues. Comprehensive device design strategies can achieve thermal stability, retain high efficiency, and move towards commercial viability.
Article
Chemistry, Physical
Yan Shen, Shaoqin Zhang, Yingli Su, Zexing Qu, Haisheng Ren
Summary: In this study, the photophysical processes of oxetanes and their ring-splitting products were systematically explored, and the influence of substituents on the repair mechanisms of oxetanes was investigated. It was found that the substituents affect the intersystem crossing (ISC) rates of these compounds by changing their spin-orbit coupling (SOC) coefficients. The introduction of substituents can alter the radiative and nonradiative decay rates, thereby transforming the photoinduced cycloreversion mechanisms of oxetanes. Additionally, the regioselectivity of oxetanes and the electron-donating and electron-withdrawing substituents were considered. This work provides valuable insights into BP-like drugs and photosensitive DNA repair.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Editorial Material
Materials Science, Multidisciplinary
Fuad A. Alami, Saurabh Soni, Alessandro Borrini, Christian A. Nijhuis
Summary: The article discusses complex charge transport behaviors induced by redox-reactions in molecular tunnelling junctions, focusing on the development of unified approaches between temperature-dependent and -independent transport theories, and comparing experimental results with traditional theories.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Huanyan Fu, Xin Zhu, Peihui Li, Mengmeng Li, Lan Yang, Chuancheng Jia, Xuefeng Guo
Summary: Single-molecule field-effect transistors (FETs) are crucial for future electronic circuits and serve as a unique platform for studying physical mechanisms at the single-molecule level. Designing single-molecule FETs involves focusing on functional molecule design, gate electrode construction, and control of molecule-electrode interface coupling. These FETs not only provide a foundation for practical applications, but also contribute to the exploration of physical laws.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Hava Meira Friedman, Bijay Kumar Agarwalla, Dvira Segal
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Computer Science, Interdisciplinary Applications
Roman Korol, Michael Kilgour, Dvira Segal
COMPUTER PHYSICS COMMUNICATIONS
(2018)
Article
Chemistry, Physical
Roman Korol, Dvira Segal
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Organic
Nicholas W. M. Michel, Alexandria D. M. Jeanneret, Hyehwang Kim, Sophie A. L. Rousseaux
JOURNAL OF ORGANIC CHEMISTRY
(2018)
Article
Physics, Multidisciplinary
Hava Meira Friedman, Bijay Kumar Agarwalla, Dvira Segal
NEW JOURNAL OF PHYSICS
(2018)
Article
Chemistry, Physical
Junjie Liu, Chang-Yu Hsieh, Dvira Segal, Gabriel Hanna
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Roya Moghaddasi Fereidani, Dvira Segal
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Na'im Kalantar, Dvira Segal
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Michael Kilgour, Bijay Kumar Agarwalla, Dvira Segal
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Roman Korol, Dvira Segal
JOURNAL OF PHYSICAL CHEMISTRY B
(2019)
Article
Chemistry, Multidisciplinary
Scott M. Shepard, Hyehwang Kim, Qing Xin Bang, Norah Alhokbany, Christopher C. Cummins
Summary: The anion [P4O11](2-) is found to be a versatile reagent for nucleophile tetraphosphorylation, yielding a variety of functionalized compounds and linear tetraphosphates, which can further undergo reactions to obtain the desired compounds. The study demonstrates that this method is efficient in synthesizing target compounds.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Hyehwang Kim, Zheng-wang Qu, Stefan Grimme, Nahil Al-Zuhaika, Douglas W. Stephan
Summary: The phosphino-phosphonium cations can react with alkynes through frustrated Lewis pair-type addition reactions, leading to phosphino-phosphination reactions. This reactivity can also be utilized to prepare dissymmetric cis-olefin-linked bidentate phosphines.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Hyehwang Kim, Douglas W. Stephan
Summary: A combination of a phosphinidene precursor, B(C6F5)(3), and 4-ethynyltoluene produced the FLP addition product, Et2N(C14H10)PC(Tol)=CH(B(C6F5)(3))2. Compound 2 reacted with halides, pseudo halides, or Me3SiSPh, providing an easy method for synthesizing salts of anionic phosphines, while the reaction with PEt3 resulted in the zwitterionic species, Et3PCH=C(SiMe3)P(NEt2)C(Tol)=CHB(C6F5)(3)8. This latter species reacted with an alkyne, yielding a phosphine donor with both olefin linked cationic and anionic substituents.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Jiliang Zhou, Hyehwang Kim, Liu Leo Liu, Levy L. Cao, Douglas W. Stephan
CHEMICAL COMMUNICATIONS
(2020)
Review
Chemistry, Multidisciplinary
Mireille Ghoussoub, Meikun Xia, Paul N. Duchesne, Dvira Segal, Geoffrey Ozin
ENERGY & ENVIRONMENTAL SCIENCE
(2019)