Large Two-Photon Absorption of Terpyridine-Based Quadrupolar Derivatives: Towards their Applications in Optical Limiting and Biological Imaging.
He T, Lim ZB, Ma L, Li H, Rajwar D, Ying Y, Di Z, Grimsdale AC, Sun H.SourceDivision of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore), Fax: (+65) 67957981.
Chemistry, an Asian journal.Chem Asian J.2013 Mar;8(3):564-71. doi: 10.1002/asia.201201009. Epub 2012 Dec 28.
Developing organic chromophores with large two-photon absorption (TPA) in both organic solvents and aqueous media is crucial owing to their applications in solid-state photonic devices and biological imaging. Herein, a series of novel terpyridine-based quadrupolar derivatives have been synthesized.
EASY-GOING deconvolution: Automated MQMAS NMR spectrum analysis based on a model with analytical crystallite excitation efficiencies.
Grimminck DL, van Meerten B, Verkuijlen MH, van Eck ER, Leo Meerts W, Kentgens AP.SourceRadboud University, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands. Electronic address: l.grimminck@science.ru.nl.
Journal of magnetic resonance (San Diego, Calif. : 1997).J Magn Reson.2013 Mar;228:116-24. doi: 10.1016/j.jmr.2012.12.012. Epub 2013 Jan 4.
The EASY-GOING deconvolution (EGdeconv) program is extended to enable fast and automated fitting of multiple quantum magic angle spinning (MQMAS) spectra guided by evolutionary algorithms. We implemented an analytical crystallite excitation model for spectrum simulation. Currently these efficiencies
Probing proximities between different quadrupolar isotopes using multi-pulse cross-polarization.
Lu X, Tankamony AS, Trébosc J, Lafon O, Amoureux JP.SourceUCCS, CNRS, UMR-8181, University Lille North of France, Villeneuve d'Ascq 59652, France.
Journal of magnetic resonance (San Diego, Calif. : 1997).J Magn Reson.2013 Mar;228:148-58. doi: 10.1016/j.jmr.2012.12.005. Epub 2012 Dec 20.
We present a novel cross-polarization MAS NMR pulse sequence to probe proximities between half-integer quadrupolar isotopes. This sequence employs a multi-pulse cross-polarization (MP-CP) transfer, instead of the previous continuous-wave CP (CW-CP) transfer. With respect to CW-CP transfers, our sequ
Perturbation theory • Neglecting dipolar and CSA contributions, we can write the total Hamiltonian as the sum of the Zeeman and and quadrupolar Hamiltonians H = H Z + H Q • Although often large, the quadrupolar interaction is ...
Quadrupolar nuclei A quadrupolar nucleus is one that has a quantum spin number greater than ½. Such nuclei have a lower symmetry than spin-½ nuclei. The quadrupole moment that varies between nuclei is a measure ...