Results 71 to 80 of about 290,242 (293)

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

An anomalous subauroral red arc on 4 August, 1972: comparison of ISIS-2 satellite data with numerical calculations [PDF]

Annales Geophysicae, 1999
This study compares the Isis II satellite measurements of the electron density and temperature, the integral airglow intensity and volume emission rate at 630 nm in the SAR arc region, observed at dusk on 4 August, 1972, in the Southern Hemisphere ...
V. V. Lobzin, A. V. Pavlov, A. V. Pavlov, N. M. Pavlova   +3 more
doaj   +1 more source

The classical dynamics of two-electron atoms near the triple collision

, 2004
The classical dynamics of two electrons in the Coulomb potential of an attractive nucleus is chaotic in large parts of the high-dimensional phase space.
D. A. Herrick, F. Diacu, Gregor Tanner, L. A. Pars, M. C. Gutzwiller, Min-Ho Lee, Nark Nyul Choi, P. Gaspard, P. Kustaanheimo   +8 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

Degree-Based Entropy for a Non-Kekulean Benzenoid Graph

Journal of Mathematics, 2022
Tessellations of kekulenes and cycloarenes have a lot of potential as nanomolecular belts for trapping and transporting heavy metal ions and chloride ions because they have the best electronic properties and pore sizes. The aromaticity, superaromaticity,
Md. Ashraful Alam, Muhammad Usman Ghani, Muhammad Kamran, Muhammad Shazib Hameed, Riaz Hussain Khan, A. Q. Baig   +5 more
doaj   +1 more source

Electron-positron pair production in the Aharonov-Bohm potential

, 1997
In the framework of QED we evaluate the cross section for electron-positron pair production by a single photon in the presence of the external Aharonov-Bohm potential in first order of perturbation theory.
A. A. Sokolov, C. R. Hagen, C. R. Hagen, F. A. B. Coutinho, G. Bergmann, G. F. Zharkov, J. Audretsch, J. Audretsch, J. Audretsch, Jürgen Audretsch, N. P. Klepikov, P. A. Lee, S. Olariu, T. T. Wu, Ulf Jasper, V. D. Skarzhinsky, V. L. Ginzburg, Vladimir D. Skarzhinsky, Y. Aharonov   +18 more
core   +1 more source

Charge carrier correlation in the electron-doped t-J model [PDF]

, 2006
We study the t-t'-t''-J model with parameters chosen to model an electron-doped high temperature superconductor. The model with one, two and four charge carriers is solved on a 32-site lattice using exact diagonalization.
P. Fulde, P. W. Leung, W. Stephan
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

DFT/TD-DFT characterization of conjugational electronic structures and spectral properties of materials based on thieno[3,2-b][1]benzothiophene for organic photovoltaic and solar cell applications

Journal of Saudi Chemical Society, 2017
In this work, a theoretical study on five organic π-conjugated molecules based on thieno[3,2-b][1]benzothiophene using together quantum methods, density functional theory (DFT) and its derivative time dependent-density functional theory (TD-DFT) is ...
Mohamed Bourass, Adil Touimi Benjelloun, Mohammed Benzakour, Mohammed Mcharfi, Fayssal Jhilal, Françoise Serein-Spirau, Jean Marc Sotiropoulos, Mohammed Bouachrine   +7 more
doaj   +1 more source

Time-dependent density functional study of the electronic spectra of oligoacenes in the charge states -1, 0, +1, and +2

, 2007
We present a systematic theoretical study of the five smallest oligoacenes (naphthalene, anthracene, tetracene, pentacene, and hexacene) in their anionic,neutral, cationic, and dicationic charge states.
Andrews, Andrews, Anthony, Aziz, Baerends, Bally, Bauernschmitt, Bauschlicher, Bauschlicher, Becke, Becke, Bendikov, Bendikov, Bergman, Berlman, Biennier, Biennier, Boschi, Bree, Bréchignac, Bréchignac, Burke, Burrow, C. Joblin, Cai, Casida, Casida, Casida, Castro, Cave, Ceperley, Chillier, Chillier, Cioslowski, Clar, Clar, Clemett, Cockett, Crocker, Curl, De Frees, Deleuze, Deleuze, Deng, Dessent, Dierksen, Dierksen, Dreizler, Dreuw, Dreuw, G. Cappellini, G. Malloci, G. Mulas, Gauss, George, Godby, Grimme, Gruhn, Gudipati, Görling, Hager, Hahn, Halasinski, Halasinski, Handy, Hartmann, Hartmann, Harvey, Hashimoto, Hedin, Heinecke, Heinze, Hirata, Hirata, Hirata, Hirata, Hohenberg, Houk, Hubner, Hummer, Hummer, Hummer, Hybertsen, Joblin, Joblin, Joblin, Jochims, Jochims, Jolibois, Jones, Kadantsev, Kan, Kato, Kato, Kato, Kato, Kato, Kawashima, Keller, Kelsall, Khakoo, Klauk, Klevens, Koch, Koch, Koch, Koch, Kohn, Krasnokutski, Lambert, Langhoff, Leach, Leach, Lee, Ling, Lopez, Lyons, Maitra, Malloci, Malloci, Malloci, Malloci, Marques, Marques, Marques, Marques, Martin, Mason, Modelli, Mulas, Mulas, Mulas, Negri, Nelson, Nemeth, Nguyen, Niederalt, Niehaus, Notario, Ossler, Ossler, Parac, Peck, Perdew, Pickett, Pino, Pino, Platt, Pope, Rehwagen, Reylé, Rienstra-Kiracofe, Romanini, Rouillé, Runge, Sackmann, Salama, Salama, Sarre, Schiedt, Schiedt, Schmidt, Schröder, Senadeera, Shida, Shida, Shiyanovkaya, Sobolewski, Staicu, Steiner, Sukhorukov, Szczepanski, Szczepanski, Tan, Tan, Tielens, Tobita, Tozer, Tozer, Troullier, Weisman, Weisman, Wiberg, Wiberg, Winkler, Witt, Yabana, Yoo   +187 more
core   +1 more source