Results 91 to 100 of about 636,871 (343)

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

3,4-Dimethyl-1H-1,2,4-triazepino[2,3-a]benzimidazol-2(3H)-one

Acta Crystallographica Section E, 2010
In the molecule of the title compound, C12H12N4O, a C atom and an N atom of the benzimidazole fused-ring portion are part of a seven-membered ring; this ring adopts a boat-shaped conformation (with the fused-ring atoms representing the stern and the sp3 ...
Asmae Saber, Abdusalam Al Subari, Hafid Zouihri, El Mokhtar Essassi, Seik Weng Ng   +4 more
doaj   +1 more source

Exact Solution of the Klein-Gordon Equation for the Hydrogen Atom Including Electron Spin [PDF]

, 2010
The term describing the coupling between total angular momentum and energy-momentum in the hydrogen atom is isolated from the radial Dirac equation and used to replace the corresponding orbital angular momentum coupling term in the radial K-G equation ...
Ducharme, Robert J.
core  

Pressure Shifts in High-Precision Hydrogen Spectroscopy: I. Long-Range Atom-Atom and Atom-Molecule Interactions

, 2019
We study the theoretical foundations for the pressure shifts in high-precision atomic beam spectrosopy of hydrogen, with a particular emphasis on transitions involving higher excited P states.
Adhikari, C. M., Dawes, R., Jentschura, U. D., Kolachevsky, N., Matveev, A.   +4 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Crystal structure and Hirshfeld surface analysis of 2,4-diamino-6-methyl-1,3,5-triazin-1-ium trichloroacetate monohydrate

Acta Crystallographica Section E: Crystallographic Communications, 2018
The asymmetric unit of the title molecular salt, C4H8N5+·C2Cl3O2−·H2O, coomprises a 2,4-diamino-6-methyl-1,3,5-triazin-1-ium cation, a trichloroacetate anion and a water molecule of solvation.
Ramalingam Sangeetha, Kasthuri Balasubramani, Kaliyaperumal Thanigaimani, Savaridasson Jose Kavitha   +3 more
doaj   +1 more source

A new way to explain the 511 keV signal from the center of the Galaxy and its possible consequences

, 2018
The first gamma-ray line originating from outside the solar system that was ever detected is the 511 keV emission from the center of our Galaxy. The accepted explanation of this signal is the annihilation of electrons and positrons.
Va'vra, J.
core  

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Establishing Thermodynamic Graphs of Nitrogenous Radical Cations Abstracting Hydrogen Atoms and Their Applications in Photoredox Reactions

Molecules
Nitrogenous compounds have been extensively utilized as hydrogen atom transfer (HAT) catalysts in photoredox reactions, with nitrogenous radical cations being the actual hydrogen atom abstractors. Building upon our previous work, 120 thermodynamic graphs
Xia Zhao, Yi-Lin Hou, Jun Yang, Xin-Hua Wang, Chong-Shan Hu, Xiao-Qing Zhu, Guang-Bin Shen   +6 more
doaj   +1 more source

3,4-Diaminopyridinium hydrogen succinate

Acta Crystallographica Section E, 2009
In the title compound, C5H8N3+·C4H5O4−, the pyridine N atom of the 3,4-diaminopyridine molecule is protonated. The protonated N atom participates in an N—H...O hydrogen bond to a succinate O atom of the singly deprotonated ...
Hoong-Kun Fun, Kasthuri Balasubramani
doaj   +1 more source