Article
Materials Science, Multidisciplinary
Cihan Demir, Ayhan Ungordu
Summary: The optoelectronic and electronic properties of coronene and its derivatives were predicted using computational chemistry programs. The results showed that certain compounds can be used as electron or hole transfer materials, blocking materials, and injection materials. In addition, specific structures were identified as suitable candidates for near infrared organic emitting diodes.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Sandra Belviso, Giulia Marsico, Roberta Franzini, Claudio Villani, Sergio Abbate, Giovanna Longhi
Summary: The spectroscopic, electrochemical, and chiroptical properties of chiral Ni(ii) and Pd(ii) complexes of [6]helicene thioethyl porphyrazine have been investigated. These complexes possess an extended aromatic moiety and have helical chirality, which make them suitable for potential pi-pi interactions with nanocarbons and optoelectronic applications. The research provides valuable insights for the development of new optoelectronic materials.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Gurpreet Kaur, Mangalampalli Ravikanth
Summary: By synthesizing different compounds, we obtained ligands and conjugates with different functionalities. These compounds have good solubility in organic solvents and were thoroughly characterized using various methods, providing a comprehensive understanding of their properties.
DALTON TRANSACTIONS
(2022)
Article
Biochemistry & Molecular Biology
Ekaterina S. Starnovskaya, Dmitry S. Kopchuk, Albert F. Khasanov, Olga S. Taniya, Igor L. Nikonov, Maria Valieva, Dmitry E. Pavlyuk, Alexander S. Novikov, Grigory Zyryanov, Oleg N. Chupakhin
Summary: A series of new alpha-(N-biphenyl)-substituted 2,2'-bipyridines were synthesized through multiple reactions and their photophysical and fluorosolvatochromic properties were studied. Some of the obtained compounds showed unexpected fluorescence activity, while others showed potential for nitroexplosive detection.
Article
Chemistry, Applied
Qi Wang, Jinshen Ren, Aijian Wang, Yuqin Dou, M. Shire Sudi, Weihua Zhu, Longhua Li
Summary: This study developed two phosphonitrilic-bridged metal porphyrin porous covalent organic polymers (COPs) for efficient hydrogen evolution reaction (HER). Compared to previously reported state-of-the-art electrocatalysts, NiTPP-PCTCOP exhibits relative low overpotentials in alkaline medium and shows long-term stability.
Article
Chemistry, Applied
Rodrigo Plaza-Pedroche, Dimitris Georgiou, Mihalis Fakis, Arnaud Fihey, Claudine Katan, Francoise Robin-le Guen, Sylvain Achelle, Julian Rodriguez-Lopez
Summary: White-light emission can be achieved by combining neutral and protonated forms of push-pull 4-substituted and 4,7-disubstituted quinazolines in the appropriate ratio. These compounds, prepared by straightforward Suzuki-Miyaura cross-coupling reactions, demonstrate remarkable emission solvatochromism and the ability to exhibit multicolor photoluminescence, including white light, through controlled protonation of the electron-deficient quinazoline ring.
Article
Spectroscopy
Ramil F. Fatykhov, Ainur D. Sharapov, Ekaterina S. Starnovskaya, Yaroslav K. Shtaitz, Maria I. Savchuk, Dmitry S. Kopchuk, Igor L. Nikonov, Grigory V. Zyryanov, Igor A. Khalymbadzha, Oleg N. Chupakhin
Summary: A series of coumarin-pyridine push-pull fluorophores were successfully synthesized through direct C-H functionalization, with 4-alkylcoumarin pyridine derivatives showing good photoluminescence quantum yields, while 4-phenylcoumarin derivatives did not exhibit noticeable fluorescence. Detailed photophysical studies demonstrated the potential of combining different chromophore systems to enhance the properties of new fluorescent compounds.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Yi Hu, Ajyal Alsaleh, Oanh Trinh, Francis D'Souza, Hong Wang
Summary: In this study, beta-functionalized push-pull zinc opp-dibenzoporphyrins were designed and synthesized as sensitizers for dye-sensitized solar cells. The utilization of arylamine as the donor group effectively solved the solar cell instability. Different arylamine donor groups showed varying electronic effects, with diphenylamine and phenothiazine exhibiting strong push-pull characteristics while carbazole canceled out this effect. Solar cells using YH9 and YH10 achieved high power conversion efficiencies, comparable to that of the best ruthenium dye N719. The potential of pi-extended porphyrins as sensitizers for dye-sensitized solar cells was demonstrated in this work.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Inorganic & Nuclear
Amir Sohel Bulbul, Nivedita Chaudhri, Mohd Shanu, Jitendra Nath Acharyya, G. Vijaya Prakash, Muniappan Sankar
Summary: Two new series of unsymmetrically beta-functionalized porphyrins were synthesized and characterized, showing notable red-shifted electronic spectral features and changes in nonlinear optical properties.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Khamael M. Abualnaja, M. A. Abu-Saied, Rehab Y. Ghareeb, Amira A. Ibrahim, Nader R. Abdelsalam
Summary: Novel push-pull tricyanofuran-based dyes containing trolox or hindered amine nucleus were synthesized and showed pronounced solvatochromic performance. The photo stability and antibacterial behavior of these dyes were significantly improved by the addition of trolox or hindered amine, as confirmed by UV-Vis absorption spectra and antibacterial tests.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Polymer Science
Wenjie Sun, Bin Zhao, Fei Zhang
Summary: In this paper, a theoretical model is developed to describe the electromechanical behavior of push-pull dielectric elastomer actuators (DEAs). The accuracy of the proposed model is validated experimentally. The study also investigates the effect of key design parameters on the actuation performance, failure mode, and critical failure voltage of the actuator, as well as the dynamic response and natural frequency.
Article
Chemistry, Applied
Corentin Pigot, Sebastien Peralta, Thanh-Tuan Bui, Malek Nechab, Frederic Dumur
Summary: Fifteen dyes based on Michler's aldehyde with different electron accepting groups were designed and synthesized. These dyes showed a broad absorption range in the visible spectrum. The solvatochromism of these dyes in various solvents of different polarities correlated linearly with the Kamlet-Taft solvent polarity scale or the SPP Catalan empirical scales. The dyes were characterized using photoluminescence spectroscopy and cyclic voltammetry, and theoretical calculations were performed to further understand their optical properties.
Article
Chemistry, Physical
Salvador Celedon, Samia Kahlal, Jocelyn Oyarce, Olivier Cador, Vania Artigas, Mauricio Fuentealba, Isabelle Ledoux-Rak, David Carrillo, Jean-Yves Saillard, Jean-Rene Hamon, Carolina Manzur
Summary: The synthesis, characterization, optical and electrochemical properties, and theoretical studies of four new copper(II) complexes supported by a chiral Schiff base ligand derived from enantiomerically pure (1R,2R)-(-)-1,2-diaminocyclohexane have been reported. The complexes were prepared through a one-pot three-component reaction and characterized using various analytical techniques. The magnetic and electrochemical properties were investigated, and DFT calculations were conducted to explain the structure and properties of the complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Mariusz Rosa, Stanislaw Ostrowski
Summary: The synthesis of porphyrins with multiple nitrogen substituents at the beta-positions is described. Highly nitrogen-substituted beta,beta-diamino-beta,beta-dinitro-porphyrinates, which are difficult to obtain by other methods, were successfully synthesized and characterized. These compounds serve as attractive starting materials for the synthesis of potential anticancer PDT agents.
Article
Biochemistry & Molecular Biology
Martijn J. Wildervanck, Reinhard Hecht, Agnieszka Nowak-Krol
Summary: The solvatochromic and fluorescence behaviors of two D-pi-A compounds were investigated using DFT/TD-DFT calculations and experimental measurements. The results showed strong solvatochromic shifts and emission color changes for these compounds in different solvents.
Article
Chemistry, Multidisciplinary
Shiyu Zhao, Yong Guo, Zhaoben Su, Chengying Wu, Wei Chen, Qing-Yun Chen
Summary: The study introduces the use of potassium salts of perfluoroalkyl ether carboxylic acids as deoxyfluorination reagents, with organic fluorides synthesized via carbonic difluoride generated from the thermal degradation of the salts.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Computer Science, Artificial Intelligence
He Zhang, Qiuhong Chen, Pengbo Ni, Haibo Liang, Min Mao, Jialing Zou
Summary: This paper proposes a method for identifying the lithology of a drilled formation using element and gamma spectrum measurement, as well as establish an intelligent identification model. The field application shows that the accuracy of the proposed method can reach 90.9%, verifying the feasibility of using this approach for intelligent identification of formation lithology during drilling.
NEURAL COMPUTING & APPLICATIONS
(2022)
Article
Cell Biology
Huanjia Gao, Jeremy Bigalke, Enshe Jiang, Yuanyuan Fan, Bojun Chen, Qing-Hui Chen, Zhiying Shan
Summary: The study revealed that TNF alpha can induce inflammatory response in brain neurons and PVN of rats, with Dahl-S rats showing a more significant response to TNF alpha compared to SD rats. This increased inflammatory response in Dahl-S rats may indicate an underlying mechanism for enhanced pressor reactivity to salt intake in the Dahl-S rat model.
CELLULAR AND MOLECULAR NEUROBIOLOGY
(2022)
Article
Environmental Sciences
Qian Wu, Jun He, Wen-Yan Zhang, Ke-Fu Zhao, Jing Jin, Jun-Ling Yu, Qing-Qing Chen, Sai Hou, Meng Zhu, Zhiwei Xu, Hai-Feng Pan
Summary: The study explored the impact of relative humidity on different types of influenza, revealing that high relative humidity is associated with an increased risk of influenza A, while low relative humidity is linked to an increased risk of influenza B. These effects remained significant during cold seasons.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Abdelmoneim Bakur, Hongyun Lu, Tarig Elshaarani, Dafaallah Albashir, Anas Mohammed, Qihe Chen
Summary: This study introduces a green method for fabricating biocomposites using microbial glycolipids, showing strong antioxidant properties and effectiveness in inhibiting the growth of liver cancer cells.
JOURNAL OF CLUSTER SCIENCE
(2022)
Review
Pharmacology & Pharmacy
Qin Shu, Hanghang Lou, Tianyu Wei, Xiayu Liu, Qihe Chen
Summary: Glycolipid biosurfactants are natural amphiphiles that have shown potential in combating microbial infections and preventing hospital infections, making them valuable in medical therapy for disease treatment and infection prevention.
Article
Pharmacology & Pharmacy
Jian Gao, Qing-Qing Chen, Ye Huang, Kai-Hang Li, Xiao-Ju Geng, Tao Wang, Qi-Si Lin, Ruo-Si Yao
Summary: Compounds M1, 6b, and 6d were identified as potent SIRT1 activators that can resist high glucose-induced cell apoptosis and alleviate inflammation response, showing great potential for the treatment of SIRT1-related diseases.
FRONTIERS IN PHARMACOLOGY
(2021)
Article
Architecture
Biao Zhou, Jiazhi Sun, Xukun Sun, Kai Wang, Chen Qingqing, Xuan Wang, Yajun Han
Summary: Chinese historic buildings with wooden structures are prone to fire disasters. The effects of hydrogen fluoride (HF) released during fire suppression on these buildings are unclear. Experimental results show that flame enhancement occurs at the early stage of fire suppression with various types of fire agents.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2023)
Article
Biochemical Research Methods
Ping Yu, Xinxin Wang, Jian Ma, Qili Zhang, Qingwei Chen
Summary: This study investigated the chaperone-assisted soluble expression of high molecular weight chitinase chiZJ408 in Escherichia coli BL21 and its optimal conditions for activity. Results showed that introduction of the chaperone GroELS improved the correct folding and solubility of chitinase chiZJ408. Additionally, Mg(2+) and Ca2+ were found to significantly impact the activity of chitinase chiZJ408.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2022)
Article
Biochemical Research Methods
Min He, Jian Ma, Qingwei Chen, Qili Zhang, Ping Yu
Summary: The study successfully enhanced the production of PLP in E. coli by constructing a recombinant strain, and determined the optimal conditions for production, laying a good foundation for the efficient production of PLP.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2022)
Review
Chemistry, Applied
Yixin Wu, Yu Li, Yang Wang, Qian Liu, Qingguo Chen, Minghua Chen
Summary: Developing highly foldable batteries with no safety hazard is crucial for portable, wearable, and implantable electric devices. Solid-state batteries, particularly those based on PVDF electrolytes, show great potential, but also face challenges such as lower ionic conductivity and lack of reactive groups. Recent research has focused on gel polymer electrolytes and all solid polymer electrolytes based on PVDF to address these issues.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Education & Educational Research
Guangtian Zhu, Xiaoling Su, Juan Du, Qingwei Chen, Bolong Xiong, Feng-Kuang Chiang
Summary: The study explored the effects of different scaffolds on students' physics problem solving, with MAPS scaffold showing more effective results. Future research will focus on the application of dynamic figures in physics problem-solving.
INTERACTIVE LEARNING ENVIRONMENTS
(2023)
Article
Computer Science, Information Systems
Xuan Hua, Jungang Han, Chen Zhao, Haipeng Tang, Zhuo He, Qinghui Chen, Shaojie Tang, Jinshan Tang, Weihua Zhou
Summary: This paper presents a novel end-to-end ECG signal classification algorithm using a segmentation strategy and 1D Convolutional Neural Networks (CNN). The proposed method achieves high accuracy in classifying different types of heartbeats, reducing the workload of physicians. Experimental results demonstrate better performance compared to state-of-the-art methods.
MULTIMEDIA SYSTEMS
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Guo-Ming Sung, Guan-Xiang Tan, Qi-Hong Chen, Yu-Ting Yang
Summary: This paper presents a 12-bit 200-MS/s CMOS digital transmitter for VDSL applications. The transmitter includes a 12-bit DAC and fully differential current-mode line driver architecture. By utilizing techniques such as a small current source, impedance synthesis, and capacitive feed-forward path, the transmitter achieves reduced layout area, simplified circuit complexity, and improved power efficiency and linearity.
2021 30TH WIRELESS AND OPTICAL COMMUNICATIONS CONFERENCE (WOCC 2021)
(2021)
Proceedings Paper
Robotics
Chen Qian, Huikun Pan, Yuan Qian, Qingwei Chen
Summary: The mixed precision level based sparse grid quadrature filter (MPLSGQF) proposes using different precision level algorithms to reduce computational burden while maintaining filtering accuracy. By reducing the number of sampling points in the time prediction process, the MPLSGQF successfully balances accuracy and computational amount.
2021 4TH INTERNATIONAL CONFERENCE ON ROBOTICS, CONTROL AND AUTOMATION ENGINEERING (RCAE 2021)
(2021)
