@article {2548, title = {Cation-Complexation Behavior of Template-Assembled Synthetic G-Quartets}, journal = {Journal of Organic Chemistry}, volume = {74}, number = {15}, year = {2009}, note = {ISI Document Delivery No.: 476XOTimes Cited: 3Cited Reference Count: 60Nikan, Mehran Sherman, John C.}, month = {Aug}, pages = {5211-5218}, type = {Article}, abstract = {We report the preparation and solution study of a set of template-assembled synthetic G-quartets (TASQs) bound to different cations. These G-quartet baskets effectively extract cations of different sizes and valencies, They form isolated G-quartets with small cations such as Na+ and Sr2+, and dimeric assemblies with larger cations such as Cs+. Their structures were determined by using H-1 NMR spectroscopy, and their sizes were evaluated by using a series of pulsed-field gradient NMR experiments. The effect of anion has been studied, and the cation selectivities have been investigated by a series of competition experiments.}, keywords = {ALKALI-METAL CATIONS, CROWN-ETHERS, DEOXYGUANOSINE, DIFFRACTION, DIFFUSION NMR-SPECTROSCOPY, DNA, GUANOSINE, ION-BINDING, LIPOPHILIC G-QUADRUPLEX, RAY FIBER, SODIUM}, isbn = {0022-3263}, url = {://000268480300011}, author = {Nikan, M. and Sherman, J. C.} } @article {4913, title = {Effects from easily ionized elements on silver analyte in atmospheric pressure parallel plate capacitively coupled plasma (PP-CCP)}, journal = {Spectrochimica Acta Part B-Atomic Spectroscopy}, volume = {55}, number = {4}, year = {2000}, note = {ISI Document Delivery No.: 313BFTimes Cited: 7Cited Reference Count: 40}, month = {Apr}, pages = {327-338}, type = {Article}, abstract = {The effect of easily ionized element (EIE) matrices on analyte emission, from a parallel plate capacitively coupled plasma (PP-CCP), has been studied. NaCl and NaNO3 were used as typical matrices and the interference on Ag emission was studied as a function of the amount of EIE and applied plasma forward power. Compared with the emission signal without the presence of matrices, the presence of either NaCl or NaNO3 as a concomitant in the sample, causes an interference effect by both enhancing, and decreasing, the emission intensity depending on the amount of added EIE. The maximum signal interference, signal enhancement, was observed at 125 W plasma forward power. The degree of enhancement from an EIE decreases with increasing forward power switching to a signal depression at a forward power of 250 W. (C) 2000 Elsevier Science B.V. All rights reserved.}, keywords = {ABSORPTION SPECTROMETRY, ATOMIC EMISSION-SPECTROMETRY, ATOMIZATION, capacitively coupled plasma, EASILY, EASILY IONIZED ELEMENT, electron energy distribution function, INTERFERENCE, IONIZABLE ELEMENT, METAL NITRATES, MICROWAVE-INDUCED PLASMA, plasma induced dissociation, SAMPLE INTRODUCTION, SODIUM, THERMAL-DECOMPOSITION}, isbn = {0584-8547}, url = {://000086977900002}, author = {Rahman, M. M. and Blades, M. W.} } @inbook {3511, title = {Isomorphous substitution of silicon by boron or aluminum in layered silicates}, booktitle = {Catalysis by Microporous Materials}, series = {Studies in Surface Science and Catalysis}, volume = {94}, year = {1995}, note = {ISI Document Delivery No.: BE31JTimes Cited: 7Cited Reference Count: 15Proceedings PaperInternational Symposium on Catalysis by Microporous Materials (ZEOCAT 95)JUL 09-13, 1995SZOMBATHELY, HUNGARYSARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, pages = {47-54}, publisher = {Elsevier Science Publ B V}, organization = {Elsevier Science Publ B V}, address = {Amsterdam}, abstract = {In order to systematically change the properties of layered silicate materials, we have investigated the possibility of isomorphous substitution of silicon by aluminum or boron. It is demonstrated that addition of boron and/or aluminum compounds to the reaction mixture leads directly to boron and aluminum containing layered materials in a hydrothermal crystallization process without further treatment. The layered materials obtained were identified as hectorite types, magadiite and kenyaite-like types. The isomorphous substitutions were pr-oven by B-11, Al-27, and Si-29 solid state MMR spectroscopy.}, keywords = {MAGADIITE, NMR, SODIUM, STATE}, isbn = {0-444-82049-3}, url = {://A1995BE31J00005}, author = {Schwieger, W. and Pohl, K. and Brenn, U. and Fyfe, C. A. and Grondey, H. and Fu, G. and Kokotailo, G. T.}, editor = {Beyer, H. K. and Karge, H. G. and Kiricsi, I. and Nagy, J. B.} }