Results 101 to 110 of about 163,188 (284)

Determination of complex stabilities with 1,10-phenanthroline-5,6-dione as ligand for the complexation of several transition metallic cations using chemometrics methods

Bulletin of the Chemical Society of Ethiopia, 2014
The traditional spectrophotometric determination of stability constants of complexation involves finding a wavelength at which only one of the components has absorbance without any spectroscopic interference of the other reaction components.
N. Samadi, M. Salamati
doaj   +1 more source

Cohesive properties of alkali halides

, 1997
We calculate cohesive properties of LiF, NaF, KF, LiCl, NaCl, and KCl with ab-initio quantum chemical methods. The coupled-cluster approach is used to correct the Hartree-Fock crystal results for correlations and to systematically improve cohesive ...
A. A. S. Sangachin, A. D. Becke, B. Paulus, B. Paulus, C. Ochsenfeld, E. Aprà, G. D. Purvis III, G. Stollhoff, H. Eckstein, H. M. Evjen, H. Stoll, H.-J. Werner, H.-J. Werner, Hermann Stoll, J. K. Jain, J. M. Foster, J. P. Perdew, J. P. Perdew, J. Yamashita, K. Doll, K. Fink, K. P. Huber, K. Raghavachari, Klaus Doll, L. Brewer, L. Mitáš, M. Causà, M. Prencipe, N. C. Pyper, N. W. Ashcroft, O. Gunnarsson, P. Cortona, P. J. Knowles, P. J. Knowles, P. J. Knowles, P. O. Löwdin, P. Pyykkö, P. W. Atkins, P. W. Fowler, P.-O. Widmark, R. Colle, R. O. Jones, S. Fahy, S. Narain, S. R. Langhoff, T. H. Dunning, Jr., T. Leininger, V. Aquilanti, X.-P. Li   +48 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Microscopic two-fluid theory of rotational constants of the OCS-H$_2$ complex in $^4$He droplets

, 2003
We present a microscopic quantum analysis for rotational constants of the OCS-H$_2$ complex in helium droplets using the local two-fluid theory in conjunction with path integral Monte Carlo simulations.
K. Birgitta Whaley, Patel M., Yongkyung Kwon   +2 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

Optical Dispersion Data Analysis of Single‐Crystal CH3NH3PbBr3 for Optimized Perovskite Solar Cell Active Layer Absorptance

Advanced Photonics Research
Proper derivation of CH3NH3PbX3 (MAPbX3; where X = Cl−, Br−, I−) optical constants is a critical step toward the development of high‐performance perovskite devices.
Christopher L. McCleese, Michael C. Brennan, Nathan Episcopo, Lirong Sun, Nina Hong, Chintalapalle V. Ramana, Tod A. Grusenmeyer, Peter R. Stevenson   +7 more
doaj   +1 more source

Optical constants of graphene measured by spectroscopic ellipsometry

Applied Physics Letters, 2010
A mechanically exfoliated graphene flake (∼150×380 μm2) on a silicon wafer with 98 nm silicon dioxide on top was scanned with a spectroscopic ellipsometer with a focused spot (∼100×55 μm2) at an angle of 55°. The spectroscopic ellipsometric data were analyzed with an optical model in which the optical constants were parameterized by B-splines.
Weber, J.W. (author), Calado, V.E. (author), Van de Sanden, M.C.M. (author)   +2 more
openaire   +5 more sources

Two-Photon Spectroscopy of the NaLi Triplet Ground State

, 2018
We employ two-photon spectroscopy to study the vibrational states of the triplet ground state potential ($a^3\Sigma^+$) of the $^{23}$Na$^{6}$Li molecule.
Ebadi, Sepehr, Jamison, Alan O., Ketterle, Wolfgang, Park, Juliana J., Rvachov, Timur M., Son, Hyungmok, Zwierlein, Martin W.   +6 more
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Enhanced Sensitivity to the Time Variation of the Fine-Structure Constant and $m_p/m_e$ in Diatomic Molecules: A Closer Examination of Silicon Monobromide

, 2010
Recently it was pointed out that transition frequencies in certain diatomic molecules have an enhanced sensitivity to variations in the fine-structure constant $\alpha$ and the proton-to-electron mass ratio $m_p/m_e$ due to a near cancellation between ...
A. Borschevsky, G. Bosser, H. W. Kroto, K. Beloy, P. Schwerdtfeger, V. V. Flambaum   +5 more
core   +1 more source