Article
Energy & Fuels
Zhijian Li, Xiaoling Ma, Ruochuan Liao, Qisheng Tu, Yunlong Ma, Qingdong Zheng
Summary: The number and position of fluorine substituents on the end groups have a significant impact on the photovoltaic performance of nonfullerene acceptors. This includes the bandgap, energy levels, intermolecular interactions, and charge transport properties. When combined with a polymer donor, an acceptor with difluorinated end groups exhibits the highest power conversion efficiency.
Article
Chemistry, Multidisciplinary
Yasukazu Hirao, Yoko Daifuku, Keiji Ihara, Takashi Kubo
Summary: The synthesis of phenalenyl-endcapped [5]cumulene as a cumulene-based singlet biradical and the spin correlation changes of one-dimensional aggregates are discussed. The introduction of bulky substituents into the appropriate positions led to the formation of a one-dimensional chain assembly, with increased bond length alternation of the cumulene chain and improved overlapping of the phenalenyl rings at lower temperatures. Variable-temperature Raman spectroscopy and magnetic susceptibility measurements revealed the decoupling of a localized spin pair at low temperatures, and the emergence of a continuum spin system involving intra- and intermolecular spin-spin interactions in the one-dimensional chain.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Xiaoyun Pan, Enrique Montes, Wudmir Y. Rojas, Brent Lawson, Hector Vazquez, Maria Kamenetska
Summary: We demonstrate enhanced electronic transport through self-assembled dimer molecular junctions between gold electrodes. The per-molecule conductance of benzimidazole dimers is higher than that of monomers. Our calculations reveal that parallel stacking of two benzimidazoles is energetically favorable due to the large p system. We engineer imidazole derivatives with higher monomer conductance and promote cooperative assembly of more transparent dimer junctions, suggesting the potential of molecular devices based on self-assembled molecular layers.
Article
Chemistry, Physical
Alina Marinela Ionescu, Ion Ivan, Claudiu Locovei, Melania Onea, Adrian Crisan, Soltan Soltan, Gisela Schuetz, Joachim Albrecht
Summary: Investigated the influence of ferromagnetic CaRuO3 on the properties of YBCO superconducting thin films. Found that the performance of YBCO films is strongly correlated with the interaction with the ferromagnetic layer on top, and the barrier layer has a significant impact on both.
Article
Engineering, Multidisciplinary
C. O. Amorim, F. Mohseni, R. K. Dumas, V. S. Amaral, J. S. Amaral
Summary: This study presents a geometry-independent correction method for magnetic moment measurements, based on a systematic relation between the differences of SQUID-VSM and DC-scan measurements and their respective correction factors. The method is applicable to samples of different shapes and radial offsets, and has been validated by experimental measurements on various samples.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Loic P. Mangin, Yahya M. Albkuri, Jeffrey S. Ovens, Shaymaa Al Shehimy, Lhoussain Khrouz, Stephan Steinmann, Christophe Bucher, R. Tom Baker
Summary: Metal imine-thiolate complexes can undergo C-C bond formation, resulting in complexes with redox-active ligands. The one-electron reduction of a related nickel bis(imine-thiolate) complex yields a paramagnetic [Ni(N2S2)](-) anion exclusively. Further oxidation leads to the formation of a high yield neutral product. Electrochemical studies reveal that a second one-electron reduction produces a diamagnetic dianion. These studies show that the reduction primarily occurs on the ligand, with the complex containing both thiolate and ring-delocalized anions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Physics, Applied
Feng Li, Duong Pham, Yuto Takeshita, Masayuki Higashi, Taro Yamashita, Masamitsu Tanaka, Akira Fujimaki
Summary: In this study, a 7r-7r-7r SQUID is used to demonstrate HFQ circuits, which simplifies the fabrication process and improves circuit energy efficiency. The properties of 7r-JJs are measured with temperature dependence, and HFQ TFFs are successfully demonstrated at frequencies up to 6.7 GHz and 44.5 GHz at different temperatures. Comparing with its rapid single-flux quantum counterpart, the HFQ TFF is expected to have a 70% reduction in both static and dynamic energy dissipation. This research lays the groundwork for developing cryogenic interface control and readout circuits for large-scale quantum computing in the future.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Pengchao Wang, Fuzhen Bi, Yonghai Li, Chenyu Han, Nan Zheng, Shuai Zhang, Jianxiao Wang, Yuanwei Wu, Xichang Bao
Summary: Thanks to the development of A-D-A type electron acceptors, organic solar cells have made remarkable progress. In this study, new acceptors with the synergistic effect of side chain and unilateral pi-bridge strategy were designed, leading to improved efficiency and molecular interactions. The resulting binary solar cell achieved an impressive efficiency of 15.36%, ranking the best among all small molecular acceptors with symmetric or asymmetric pi-bridges. The results highlight the importance of manipulating molecular interactions in achieving efficient charge transport and exciton dissociation.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Song Yi Park, Chiara Labanti, Richard A. Pacalaj, Tack Ho Lee, Yifan Dong, Yi-Chun Chin, Joel Luke, Gihan Ryu, Daiki Minami, Sungyoung Yun, Jeong-Il Park, Feifei Fang, Kyung-Bae Park, James R. Durrant, Ji-Seon Kim
Summary: This study demonstrates the fabrication of efficient organic photodetectors (OPDs) using non-fullerene acceptors as the photoactive layer via solution-processing. The high quadrupole moments of the non-fullerene acceptor molecules contribute to the efficient dissociation of charge transfer excitonic states, leading to excellent OPD performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Jinqiu Xu, Francis Lin, Lei Zhu, Ming Zhang, Tianyu Hao, Guanqing Zhou, Ke Gao, Yecheng Zou, Gang Wei, Yuanping Yi, Alex K. Y. Jen, Yongming Zhang, Feng Liu
Summary: This research investigates the structure features and intermolecular interactions of nonfullerene acceptors (NFAs) in single crystal and thin films, as well as their solar cell applications. Key parameters and intermolecular forces that lead to different crystalline packing motifs are identified. Atomic modification induces hydrogen bonding or pi-pi stacking column, resulting in different crystalline packing. Molecular assembly in thin films is initiated by hydrogen bonding and completed by pi-pi stacking reorganization. The crystalline packing motif is not directly related to device efficiency, but the crystalline morphology influences exciton/carrier dynamics and device performance. A broader understanding of the scaling behavior of organic semiconductor crystals ranging from oligoacenes to NFAs is established.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Maheswar Reddy Gowri, Gurunath Ramanathan
Summary: This study reports the synthesis and photophysical properties of four analogs of red fluorescent protein (RFP) chromophores. The crystal structures of these analogs are stabilized by different non-covalent intermolecular interactions, including C-H....O hydrogen bonding, C-H....pi, pi....pi, and halogen bonding interactions. The carbonyl group in the imidazol-5(4H)-one ring leads to diverse packing systems through intermolecular C-H....O hydrogen bonds. The photoluminescence of these molecules can be tuned by appropriate substitution, with the azine compounds being completely non-fluorescent compared to the other two. (C) 2022 Elsevier B.V. All rights reserved.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Xiuxing Liu, Qiuyan Liao, Jie Yang, Zhen Li, Qianqian Li
Summary: The phosphorescence of organic materials is influenced by intermolecular interactions, which are affected by various factors and uncontrollable aggregated behaviors. By controlling the temperature, the afterglow can change colors continuously, achieving white emission with deuteration. This is due to the hierarchical architectures of molecular aggregates and the unlocking process of interactions with different energies. Establishing the correspondence between interactions and excited triplet states allows for accurate design of desirable phosphorescence materials through hierarchical control of aggregated structures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Zihao Liang, Ying Tan, Sheng-Ning Hsu, Jacob F. Stoehr, Hamas Tahir, Aaron B. Woeppel, Suman Debnath, Matthias Zeller, Letian Dou, Brett M. Savoie, Bryan W. Boudouris
Summary: By designing and synthesizing open-shell molecules, researchers have successfully controlled the assembly of these molecules into a strong antiferromagnetic network. The high paramagnetic-to-antiferromagnetic transition temperature of around 40 K and the high single-crystal electrical conductivity indicate the potential of this material in electronic and magnetic applications.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2023)
Article
Chemistry, Applied
Xinyong Liu, Jingwei Li, Xu Qiu, Xiyun Ye, Lei Xu, Dehua Hu
Summary: In this work, a novel deep-blue material TPIN was designed and synthesized, with multiple intermolecular hydrogen bond interactions to improve the efficiency and color purity of organic light-emitting diodes (OLEDs).
Article
Chemistry, Multidisciplinary
Ajun Tang, Yunpeng Li, Rui Wang, Jiawei Yang, Chaoqi Ma, Zhi Li, Qi Zou, Hongxiang Li
Summary: The molecular conductance of 2,3,5,6-tetrafluoro-7,7,8,8,-tetracyano-quinodimethane (F4TCNQ) with different electronic states was investigated using the scanning tunneling microscope break junction technique. The conductance of these electronic states follows the order of neutral > radical anion > dianion, with the conductance of the neutral state reaching 10^(-1.17)G(0) due to its LUMO energy level being close to the Fermi level of the gold electrode. Furthermore, neutral F4TCNQ can be gradually reduced to radical anions under a relatively low bias voltage of 100 mV. These findings will advance the development of organic optoelectronic devices and molecule electronics.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Xiaoyan He, Corinne Lagrost, Lucie Norel, Stephane Rigaut
Article
Chemistry, Multidisciplinary
Andrea Mulas, Galina Dubacheva, Hassan Al Sabea, Fabien Miomandre, Jean-Frederic Audibert, Lucie Norel, Stephane Rigaut, Corinne Lagrost
Article
Chemistry, Multidisciplinary
Maher Hojorat, Hassan Al Sabea, Lucie Norel, Kevin Bernot, Thierry Roisnel, Frederic Gendron, Boris Le Guennic, Elzbieta Trzop, Eric Collet, Jeffrey R. Long, Stephane Rigaut
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Hassan Al Sabea, Lucie Norel, Olivier Galangau, Hussein Hijazi, Remi Metivier, Thierry Roisnel, Olivier Maury, Christophe Bucher, Francois Riobe, Stephane Rigaut
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Multidisciplinary
Hassan Al Sabea, Lucie Norel, Olivier Galangau, Thierry Roisnel, Olivier Maury, Francois Riobe, Stephane Rigaut
ADVANCED FUNCTIONAL MATERIALS
(2020)
Review
Chemistry, Physical
Lucie Norel, Olivier Galangau, Hassan Al Sabea, Stephane Rigaut
Summary: Molecular luminescent switches offer a unique class of compounds with tunable luminescence response through chemical or physical stimuli. Switchable near-infrared (NIR) emitters, particularly those based on lanthanides, are of interest for in vivo imaging and advanced materials. The ability to manipulate their emission lines through proper engineering of coordination spheres opens up possibilities for various applications.
Article
Chemistry, Physical
Thibault Gallavardin, Andrea Mulas, Lucie Norel, Stephane Rigaut, Arnaud Brosseau, Remi Metivier, Elena Ishow
Summary: Dual nanoparticles with emission photoswitching ability were synthesized by flash coprecipitation of fluorophores and photochromes in water to investigate their interaction at different ratios. High fluorophore/photochrome ratios led to faster on/off fluorescence photoswitching, while spatial confinement effects influenced emission recovery.Attempts to regenerate the initial state upon visible irradiation revealed unexpected structural transformations due to noncovalent dye self-assemblies.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Zuoti Xie, Valentin Diez Cabanes, Quyen Van Nguyen, Sandra Rodriguez-Gonzalez, Lucie Norel, Olivier Galangau, Stephane Rigaut, Jerome Cornil, C. Daniel Frisbie
Summary: This study quantifies the effect of metal image potentials on the alignment of orbital energy with the Fermi level in molecular tunnel junctions. Both experimental and theoretical approaches show that the image potential energy contributes significantly to the total offset in OPX junctions, accounting for 25-30% of the total offset.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Gautam Mitra, Vincent Delmas, Hassan Al Sabea, Lucie Norel, Olivier Galangau, Stephane Rigaut, Jerome Cornil, Karine Costuas, Elke Scheer
Summary: In this study, the first systematic transport investigation of alkynyl-ended oligophenyl-diethynyl (OPA) single-molecule junctions with direct Au-C anchoring scheme at low temperature was reported using the mechanically controlled break junction technique. Different types of junctions for OPA molecules between Au electrodes with two to four phenyl rings were identified based on their conductance and stretching behavior. Inelastic electron tunneling spectroscopy confirmed the excitation of Au-C vibrational modes at low temperature, highlighting the potential for future functional molecule transport studies using alkynyl endgroups.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Inorganic & Nuclear
Pramila Selvanathan, Elsa Tufenkjian, Olivier Galangau, Thierry Roisnel, Francois Riobe, Olivier Maury, Lucie Norel, Stephane Rigaut
Summary: We present a bimetallic complex consisting of a ruthenium(II) bisacetylide complex with a photochromic dithienylethene (DTE) acetylide arm and a coordinating bipyridyl, in coordination with Yb(TTA)3 centers. The DTE isomerization is triggered by both UV light absorbed by the DTE unit and 450 nm excitation of the organometallic moiety. The redox behavior of the ruthenium(II) bisacetylide system is fully investigated, revealing a lack of stability of the DTE-closed oxidized state preventing effective redox luminescence switching while the photoswitching of ytterbium(III) NIR emission is fully operational.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Nour El Beyrouti, Felix Houard, Marie Cordier, Elzbieta Trzop, Stephane Rigaut, Boris Le Guennic, Kevin Bernot, Lucie Norel
Summary: This article presents a dinuclear metallacycle that is assembled from a bispyridyl dithienylethene linker and a highly anisotropic dysprosium based Single Molecule Magnet (SMM). It exhibits magnetic hysteresis at 1.8 K and photoisomerization in single crystals (SC). The impact of photoswitching on the SMM behavior is evidenced and correlated with the specific organization of the magnetic units.
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jie Hou, Dongzhe Li, Lucie Norel, Stephane Rigaut, Zhipeng Wang, Lei Shan, Tadahiro Komeda
Summary: In this study, the isomerization and variation of the spin state of molecules adsorbed on the Au(111) surface were examined by injecting tunneling electrons. The results showed that the conformation of the molecules could be changed through tunneling electron injection, and the change in magnetic property was confirmed by detecting the Kondo resonance.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Olivier Galangau, Lucie Norel, Stephane Rigaut
Summary: Metal complexes combined with photochromic molecules are promising platforms for smart light-switching materials with innovative properties, by utilizing the specific characteristics of metal complexes and perturbing the excited-state properties to generate new reactivity and photochemical properties. In addition to focusing on achievements in optical, redox, magnetic properties, and applications in catalysis or supramolecular chemistry, scientific challenges for future developments and applications are also highlighted.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hassan Al Sabea, Nadege Hamon, Olivier Galangau, Lucie Norel, Olivier Maury, Francois Riobe, Raphael Tripier, Stephane Rigaut
INORGANIC CHEMISTRY FRONTIERS
(2020)
Article
Chemistry, Inorganic & Nuclear
Guglielmo Fernandez Garcia, Vincent Montigaud, Lucie Norel, Olivier Cador, Boris Le Guennic, Federico Totti, Fabrice Pointillart
Article
Chemistry, Inorganic & Nuclear
Masoume Malmir, Majid M. Heravi, Zahra Yekke-Ghasemi, Masoud Mirzaei
Summary: In this study, a tri-component composite consisting of Fe3O4 nanoparticles, Keggin-type polyoxometalate, and graphene oxide was prepared and investigated as a catalyst for the oxidation of sulfides to sulfoxides. The catalyst showed excellent stability, high yields, and recyclability, making it a promising choice for organic-inorganic hybrid catalytic reactions conducted under mild conditions.
Article
Chemistry, Inorganic & Nuclear
Samuel D. Juarez-Escamilla, Sriloy Dey, Bruno Donnadieu, T. Keith Hollis
Summary: In this study, a bidentate Mo complex was synthesized using metalation and transmetalation methodology. The synthesis was optimized to achieve a high yield. The crystal structure of the bidentate complex was determined. Additionally, alternative forms of ligands were discovered in the reaction.
Article
Chemistry, Inorganic & Nuclear
Mohamed H. Abdel-Rhman, Ghada Samir, Mostafa A. Hussien, Nasser M. Hosny
Summary: This study investigated the dissolution performance of hydrazine carbonate solution on zirconium dibutyl phosphate (Zr-DBP), and found that hydrazine carbonate solution could promote the dissolution of Zr-DBP. The effects of dissolution temperature and hydrogen peroxide concentration on the dissolution efficiency were also explored, and the corrosion effect on stainless steel by hydrazine carbonate solution was studied.
Article
Chemistry, Inorganic & Nuclear
Qiaofang Fu, Fangyu Tan, Wu Ying
Summary: This study successfully prepared vermiculite/g-C3N4/TiO2 composites and found that under specific conditions, the composites exhibited excellent degradation effects, with a high degradation rate for methylene blue. Additionally, the composites were able to enhance surface area, reduce carrier loading rate, improve light energy utilization, and enhance durability.
Article
Chemistry, Inorganic & Nuclear
Annabelle G. W. Hodson, Robert T. Mason
Summary: Functionalised polystyrene resins have been found to be efficient catalysts in the synthesis of specific complexes, with the conversion rate controlled by the polymer structure. The addition of amines or amino acids can further yield substituted 13-butadienyl complexes, which have been analyzed by NMR.
Article
Chemistry, Inorganic & Nuclear
C. Kavitha, S. Anbarasan, P. Subramaniam
Summary: The sulfoxidation of PMAAs by the oxo(salen)chromium(V) complex in aqueous acetonitrile medium was studied. The rate of the reaction is influenced by the polarity of the medium and the substituents on PMAA, with electron donating substituents accelerating the reaction and electron withdrawing substituents retarding the reaction.
Article
Chemistry, Inorganic & Nuclear
Qiang-Qiang Liu, Mithun Kumar Ghosh, Shu-Lan Cai, Xiao-Hong Liu, Lu Lu, Mohd. Muddassir, Tanmay Kumar Ghorai, Jun Wang
Summary: Three newly developed coordination polymers (CPs) with semiconducting properties were synthesized using hydrothermal methods. These CPs exhibit superior photocatalytic activity and can degrade organic pollutants effectively.
Article
Chemistry, Inorganic & Nuclear
Mehrnaz Aliahmadi, Ali Nemati Kharat, Jan Janczak
Summary: This study proposes a method for synthesizing allyl alcohol using cost-effective and renewable bio-resource glycerol. By utilizing catalysts, alcohol as a solvent, and a reducing agent, allyl alcohol with an efficiency of 100% was obtained. The structures of the newly synthesized complexes were determined using X-ray single crystallography.
Article
Chemistry, Inorganic & Nuclear
Ji-Yan Gao, Nan Zhang, Dong-Sheng Huang, Xiang-Rong Liu, Zai-Wen Yang, Shun-Sheng Zhao
Summary: Two new transition metal complexes I and II were synthesized and characterized. The complexes exhibited strong thermal stabilities and showed effective binding to CT-DNA and BSA. Complex II exhibited stronger inhibition activity against P. aeruginosa than gentamicin sulfate. These complexes have potential applications in drug research.
Article
Chemistry, Inorganic & Nuclear
Rishabh Ujjval, Hilal Ahmad Khan, Chinnappan Sivasankar, Natesan Thirupathi
Summary: In this study, a rigid 2-aminobenzimidazole type guanidine and its platinum complexes were synthesized through a series of reactions and characterized by various physical and chemical methods. The reaction mechanism was also explained through DFT calculations.
Article
Chemistry, Inorganic & Nuclear
Marcelo Carpes Nunes, Thais Zaboenco, Vinicius Kemper Melara, Gabriel Barros Baptistella, Andre Luiz Barboza Formiga, Andersson Barison, Fabio Souza Nunes
Summary: A new luminescent molecular thermometer has been developed, which uses the spin-crossover equilibrium of a nickelcyclen derivative to measure temperature. The sensor shows high sensitivity and accuracy.
Article
Chemistry, Inorganic & Nuclear
Yuyu Shan, Zhenqin Zhao, Xia Zhang, Zhan Wu, Xiu-Ling Li
Summary: In this study, a new bridging ligand was synthesized through refluxing, and two mononuclear Cu(I) complexes and two trinuclear Cu(I)-Eu(III) complexes were obtained through self-assembly. The Cu(I) antenna chromophores successfully transferred energy to the Eu(III) centers, achieving sensitized Eu(III) luminescence.
Article
Chemistry, Inorganic & Nuclear
Gabriela Sanchez-Lecuona, Mayra C. Vazquez-Nunez, Bruno Donnadieu, Miguel A. Munoz-Hernandez, Virginia Montiel-Palma
Summary: The reaction of RuHCl(PPh3)3 with GaMe3 has been studied and the obtained complexes were analyzed in detail. The results indicate the formation of a Ru-Ga bond, suggesting the generation of an in situ formed ambiphilic phosphinogallyl ligand. This is of significance for understanding the interaction between metal-halogen bonds and metal-small molecule bonds.
Article
Chemistry, Inorganic & Nuclear
Sevil Sener, Nursel Acar, Fatih Dumludag
Summary: The synthesis, characterization, spectroscopic and bonding features of a new Co (II) phthalocyanine compound containing two thiocarbohydrazone groups were explained. The compound showed semiconductor properties and potential as a temperature sensor.
Article
Chemistry, Inorganic & Nuclear
Ledja B. O. Davi, Aryanna S. P. N. Costa, Mariana S. Silva, Adriana S. Ribeiro, Cintya D. A. E. S. Barbosa, Julio C. S. Da Silva, Dimas J. P. Lima, Daniela S. Anunciacao
Summary: In this study, a dansyl derivative sensor called o-PDDS was prepared and used for the detection of Al3+ ions in water. The o-PDDS sensor exhibited high sensitivity and linear response towards Al3+ ions. Experimental and computational studies confirmed a 1:1 stoichiometry ratio between o-PDDS and Al3+ ions. Real sample analysis demonstrated the selectivity and detection performance of the sensor, indicating its potential for field use.
