Review
Multidisciplinary Sciences
Joseph D. Keene, Nathaniel J. Freymeyer, James R. McBride, Sandra J. Rosenthal
Summary: This review focuses on the characteristics of semiconductor nanocrystals and the methods of ultrafast spectroscopy, with CdSe nanocrystals as the main topic. Various types of nanocrystal systems are also discussed.
Article
Chemistry, Physical
Shakeel Ahmed, Wang Rui, Faizah Altaf, Jahanzeb Khan, Patrizia Bocchetta, Han Zhang
Summary: The carrier dynamics of 2D tri-TMDCs provide a platform for studying excitons. In this study, ZrTe3 nanosheets were investigated using transient absorption spectrometer. Different carrier dynamics were observed at different pump powers and wavelengths. The shorter decay constant is related to electron-phonon relaxation, while the longer decay constant represents charge separation. TA spectroscopy provides insight into carrier lifetime, cooling dynamics, diffusion, and excitations.
Article
Nanoscience & Nanotechnology
Michalis Stavrou, Nikolaos Chazapis, Vasileios Arapakis, Vasilios Georgakilas, Stelios Couris
Summary: Hematene and magnetene nanoplatelets were synthesized from hematite and magnetite ores using a green synthesis method and dispersed in water. These non-vdW 2D materials showed strong saturable absorption and Kerr-type nonlinear refractive index, suggesting potential applications in photonics and optoelectronics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Alexandru Turza, Gheorghe Borodi, Aurel Pop, Maria David
Summary: The study focuses on the structural features and crystal structures of Trestolone, methenolone, and dihydroboldenone. Configurational analysis of the steroid skeleton rings was conducted, with investigations into intermolecular interactions within the crystals using Hirshfeld surfaces and the Coulomb-London-Pauli method for evaluating total lattice energies.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Preeti Dagar, Nandan Ghorai, Kasinath Ojha, Hirendra N. Ghosh, Ashok K. Ganguli
Summary: By incorporating a hole scavenger, cobalt phosphate (CoPi), and an electron scavenger, multi-walled carbon nanotubes (CNTs), into the CdS photoanode, an improved suppression of charge-carrier recombination and effective charge transfer has been achieved, leading to a 90-fold enhancement in photocurrent compared to CdS. Ultrafast transient absorption spectroscopic studies provided insights into the kinetics of charge transfer, aiding in the optimization of efficiency and design of such photoanodes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Review
Computer Science, Information Systems
Shakeel Ahamad, Ratneshwer
Summary: This review focuses on the performability analysis of safety critical systems, investigating existing approaches, strengths and limitations, challenges, and strategies. Unlike previous studies, it comprehensively examines both performance and reliability factors. The findings will aid scholars and novice researchers in making effective decisions on the performability of SCSs.
COMPUTER SCIENCE REVIEW
(2021)
Article
Chemistry, Physical
Leandro H. Zucolotto Cocca, Andre Pelosi, Lucas F. Sciuti, Luis M. G. Abegao, Kenji Kamada, Sandrine Piguel, Cleber Renato Mendonca, Leonardo De Boni
Summary: Imidazopyridine derivatives, as unnatural purine isosteres, have attracted considerable attention due to their wide applicability in various scientific fields. They can be used as fluorescent bioprobes for DNA or RNA spectroscopic studies, and their optical properties can be enhanced by incorporating different structures in the central imidazopyridine scaffold. The research revealed high fluorescence quantum yields and two-photon absorption effects in certain imidazopyridine derivatives, indicating their potential as fluorescent probes induced by two-photon excitation.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Maryam Alhefeiti, Falguni Chandra, Ravindra Kumar Gupta, Na'il Saleh
Summary: Despite the environmental damage caused by plastic waste, this study explores the loading of dye from natural resources onto plastic films and discusses the potential application in ionic solar cells.
Article
Astronomy & Astrophysics
Swayamsidha Mishra, Sudipta Mukherji, Yogesh K. Srivastava
Summary: The study focuses on the examination of field theory in a time-dependent background with a conical defect, specifically looking at the calculation of two-point correlators in the Milne spacetime. The results show that the correlators, for both twisted and untwisted operators, can be represented as a sum over images in a compact form.
Article
Biochemical Research Methods
Sazia Iftekhar, David S. Hage
Summary: The study showed that ultrafast affinity extraction (UAE) using affinity microcolumns is stable and reliable for measuring drugs and other targets, providing consistent values for free solute fractions, binding constants, and rate constants.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
(2021)
Article
Chemistry, Applied
Soni Kumari, Inderpal Yadav, Jitendra Nath Acharyya, Mohd Shanu, G. Vijaya Prakash, Muniappan Sankar
Summary: A new family of /9-functionalized octaphenylporphyrins with unsymmetrical substitutions of bromo and nitro groups has been synthesized, and their effect on the properties of the porphyrin macrocycles has been investigated.
Article
Chemistry, Multidisciplinary
Lia Queiroz do Amaral
Summary: The main phase transition of lipid bilayers is the defined change from an ordered (gel) to a disordered (fluid liquid crystal) state of hydrocarbon chains, which happens at a specific temperature T-m. However, aqueous dispersions of pure anionic phospholipids, particularly DMPG, may exhibit a 'melting regime' over approximately 10 degrees C, from T-m(on) until T-m(off). This paper reviews seven papers by the author with different collaborations, focusing on the proposal of pores in the DMPG melting transition and the structural results obtained from X-ray scattering and other experimental techniques. The biological relevance is emphasized.
Article
Instruments & Instrumentation
Xiaojun Wang, Mahmudul Hasan, Lin Fan, Yibo Wang, Hui Li, Daniel S. Slaughter, Martin Centurion
Summary: This study presents an apparatus for investigating the dissociation dynamics of mass-selected ion-molecule clusters using an ultrafast laser. The performance of the apparatus is tested by measuring photofragment ions and neutrals, and the results are compared with electronic structure calculations and existing data. The focus is on the generation mechanism and dissociation channels of ion-molecule clusters in the charge-transfer excited state.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Physical
Asmaa M. Fahim, Amr Mohamed, Medhat A. Ibrahim
Summary: In this study, propiolate esters derivatives were synthesized via Steglich esterification and investigated using experimental and theoretical calculations to study their reaction mechanism and properties. The obtained products were optimized and analyzed for various molecular characteristics to compare with experimental data.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Xuepei Zhang, Zhaowei Meng, Christian M. Beusch, Hassan Gharibi, Qing Cheng, Hezheng Lyu, Luciano Di Stefano, Jijing Wang, Amir A. Saei, Akos Vegvari, Massimiliano Gaetani, Roman A. Zubarev
Summary: This study investigated the effects of simultaneous depletion of heavy carbon, hydrogen, oxygen, and nitrogen isotopes on the bacterium E. coli and the enzymes expressed in it. The results showed that bacteria and enzymes grown in depleted media exhibited faster kinetics, possibly due to diminished conformational and vibrational entropy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Adam Glinka, Jacek Kubicki, Marcin Ziolek
Summary: In this study, electron transfer dynamics in DSSCs using triphenylamine Y123 dye were examined using femtosecond transient absorption spectroscopy. Continuous irradiation was found to accelerate electron injection and suppress back electron transfer, leading to enhanced photocurrent efficiency in the initial charge separation processes.
Article
Medicine, Research & Experimental
Yuanzhang Fang, Lifei Wang, Changlin Wan, Yifan Sun, Kevin Van der Jeught, Zhuolong Zhou, Tianhan Dong, Ka Man So, Tao Yu, Yujing Li, Haniyeh Eyvani, Austyn B. Colter, Edward Dong, Sha Cao, Jin Wang, Bryan P. Schneider, George E. Sandusky, Yunlong Liu, Chi Zhang, Xiongbin Lu, Xinna Zhang
Summary: Immune evasion is a critical event in tumor progression, and downregulation of antigen presentation by tumor cells is a primary mechanism of immune escape. The identification of MAL2 as a key player in enhancing antigen presentation on tumor cells and increasing cytotoxicity of immune cells suggests its potential as a therapeutic target for breast cancer immunotherapy.
JOURNAL OF CLINICAL INVESTIGATION
(2021)
Review
Biochemistry & Molecular Biology
Lingfei Wang, Feng Jin, Xiqian Jiang, Jianwei Chen, Meng C. Wang, Jin Wang
Summary: This review focuses on the commonly used methods to detect and quantify thiols in living cells and the general approaches applied in mass spectrometry-based thiol quantification. Thiols play important roles in biological systems, and quantifying these species is crucial for understanding their functions. However, reliable quantification using fluorescent probes remains challenging.
ANTIOXIDANTS & REDOX SIGNALING
(2022)
Review
Energy & Fuels
Yunlong Zhang
Summary: This paper reviews recent advances in the application of noncontact atomic force microscopy to the petroleum field, discussing the complexity of petroleum structures and the challenges in utilizing this new technique.
Article
Energy & Fuels
Pengcheng Chen, Jordan N. Metz, Adam S. Gross, Stuart E. Smith, Steven P. Rucker, Nan Yao, Yunlong Zhang
Summary: The petroleum pitch M-50 is well-known for producing valuable carbon materials through thermal treatments, but the mechanisms of thermal polymerization and molecular weight growth under thermal conditions are still unclear. The presence of methyl groups and five-membered rings play important roles in initiating polymerization and molecular weight growth, but the reactivities of five-membered rings remain unknown.
Article
Biochemistry & Molecular Biology
Hanna Grajek, Jacek Kubicki, Ignacy Gryczynski, Jerzy Karolczak, Grazyna Zurkowska, Agnieszka Piotrowicz-Cieslak, Piotr Bojarski
Summary: Time-resolved fluorescence measurements of FMN in PVA films show accelerated decay in the presence of fluorescent dimers and nonradiative energy transfer. Experimental observation of fluorescence decay from H and J dimer states of FMN was reported for the first time. Inhomogeneous orientational broadening of energy levels affected fluorescence decay shape and energy transfer efficiency between FMN molecules.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Editorial Material
Energy & Fuels
Yunlong Zhang, Ryan P. Rodgers
Article
Multidisciplinary Sciences
Pengcheng Chen, Dingxin Fan, Yunlong Zhang, Annabella Selloni, Emily A. Carter, Craig B. Arnold, David C. Dankworth, Steven P. Rucker, James R. Chelikowsky, Nan Yao
Summary: This study investigates the breaking of a single dative bond using non-contact AFM, finding that the bond can be ruptured by applying either an attractive force or a repulsive force, accompanied by changes in the spin state of the system and significant shear force contributions.Combined experimental and computational studies provide a deeper understanding of the chemical bond breaking process.
NATURE COMMUNICATIONS
(2021)
Editorial Material
Energy & Fuels
Yunlong Zhang
Article
Energy & Fuels
Jordan N. Metz, Yunlong Zhang
Summary: Organic reagents are crucial in material development, but understanding their mechanisms is challenging. By using isotope-edited FT-IR, this study successfully identified the specific groups contributing to an IR marker band and shed light on the transformation mechanisms. This technique has broad applications in energy and materials sciences.
Article
Cell Biology
Marzia Savini, Andrew Folick, Yi-Tang Lee, Feng Jin, Andre Cuevas, Matthew C. Tillman, Jonathon D. Duffy, Qian Zhao, Isaiah A. Neve, Pei-Wen Hu, Yong Yu, Qinghao Zhang, Youqiong Ye, William B. Mair, Jin Wang, Leng Han, Eric A. Ortlund, Meng C. Wang
Summary: This study reveals the importance of lysosomes as a signaling hub in coordinating metabolism and aging, as well as the role of lysosomal signaling in promoting longevity through inter-tissue communication. Lysosomal lipolysis in peripheral adipose depots produces polyunsaturated fatty acids (PUFAs) and activates a signaling pathway in neurons that extends lifespan. The polyunsaturated fatty acid dihomo-gamma-linolenic acid and the lipid chaperone LBP-3 play key roles in this fat-to-neuron lipid signaling pathway.
NATURE CELL BIOLOGY
(2022)
Article
Physics, Multidisciplinary
Alix Volte, Celine Mariette, Roman Bertoni, Marco Cammarata, Xu Dong, Elzbieta Trzop, Herve Cailleau, Eric Collet, Matteo Levantino, Michael Wulff, Jacek Kubicki, Feng-Lei Yang, Marie-Laure Boillot, Benoit Corraze, Laurentiu Stoleriu, Cristian Enachescu, Maciej Lorenc
Summary: The study demonstrates a delay between volumetric and spin-state switching in a spin-crossover compound, showcasing the existence of cooperative molecular switching in the solid state. This delay is explained by thermally activated kinetics governed by local energy barriers separating molecular states.
COMMUNICATIONS PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Rishi R. Paudel, Dong Lu, Sandipan Roy Chowdhury, Erika Y. Monroy, Jin Wang
Summary: This article reviews the emerging lysosome-mediated targeted protein degradation (TPD) methods, focusing on the degradation of different types of proteins and organelles through autophagy and endosome pathways. The mechanism, regulation, and monitoring methods of autophagy are also summarized.
Editorial Material
Energy & Fuels
Yunlong Zhang
Review
Chemistry, Multidisciplinary
Dong Lu, Xin Yu, Hanfeng Lin, Ran Cheng, Erika Y. Monroy, Xiaoli Qi, Meng C. Wang, Jin Wang
Summary: Proteolysis-targeting chimeras (PROTACs) and targeted covalent inhibitors (TCIs) are two exciting strategies in the fields of chemical biology and drug discovery. The emergence of covalent PROTACs, which combine these two strategies, has gained increasing interest in recent years. This review highlights the mechanism and advantages of TCIs and PROTACs, and discusses the recent development of covalent PROTACs using irreversible and reversible covalent chemistry.
CHEMICAL SOCIETY REVIEWS
(2022)