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We present detailed analysis of inter- and intraband transitions in GaN/AlN self-organized quantum dots grown on sapphire, silicon (111) and 6H-SiC substrates. Samples containing quantum dots of different size were characterized by means of transmission el ...
One electron oxidn. of the beta-Diketiminate vanadium (III) bis-neopentyl complex (Nacnac)V(CH2tBu)2 (Nacnac-=[Ar]NC(Me)CHC(Me)N[Ar], Ar=2,6-(CHMe2)2C6H3) promotes alpha-abstraction to afford the cationic four-coordinate neopentylidene vanadium complex [(N ...
The properties of materials can be created and improved either by confining their dimensions in the nanoscale or by controlling their nanostructure. We have combined these two concepts, and here we describe a new class of nanostructured nanosized materials ...
We present first-principles mol. dynamics studies of the reductive C-S bond cleavage reaction in hexathioether complexes of the form [Re(9S3)2]m+ (with 9S3 = 1,4,7 trithiacyclononane and m = 1,2). Our calcns. show that electron transfer and bond dissocn. t ...
Electronic states and solvation of Cu and Ag aqua ions are investigated by comparing the Cu2+ + e- -> Cu+ and Ag2+ + e- -> Ag+ redox reactions using d. functional-based computational methods. The coordination no. of aq. Cu2+ is found to fluctuate between 5 ...
New 2-(aminomethyl)-5-(hydroxymethyl)pyrrolidine-3,4-diol derivatives were synthesized from (5S)-5-[(trityloxy)methyl]pyrrolidin-2-one (6) (Schemes 1 and 2) and their inhibitory activities toward 25 glycosidases assayed (Table). The influence of the config ...
Magnetic reconnection in collisionless magnetohydrodynamic plasmas is studied under controlled conditions in toroidal X-line configurations formed in the center of the Versatile Toroidal Facility [J. Egedal , Rev. Sci. Instrum. 71, 3351 (2000)]. Profiles o ...
The charge density of urea is studied using very high precision single-crystal synchrotron-radiation diffraction data collected at the Swiss-Norwegian Beam Lines at ESRF. An unprecedented resolution of 1.44 Å-1 in sin[theta][/][lambda] is obtained at 123 K ...
The surface plasmon enhanced hyper-Rayleigh scattering light collected from an aqueous solution of gold nanorods is reported. A non negligible part of the signal is attributed to a photoluminescence background attributed to the electron–hole recombination ...
Clear evidence is reported for the first time of a rapid localized reduction of core electron energy diffusivity during the formation of an electron internal-transport barrier. The transition occurs rapidly (similar or equal to3 ms), during a slow (similar ...