Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Petri Ingman"'
Autor:
Stanislav G. Falkovich, Vladimir V. Matveev, Anatolii A. Darinskii, Igor M. Neelov, Petri Ingman, Erkki Lähderanta, Denis A. Markelov, Maxim Yu. Ilyash
Publikováno v:
Physical Chemistry Chemical Physics. 17:3214-3226
NMR relaxation experiments are widely used to investigate the local orientation mobility in dendrimers. In particular, the NMR method allows one to measure the spin-lattice relaxation rate, 1/T1, which is connected with the orientational autocorrelat
Publikováno v:
The Journal of Chemical Physics. 149:234901
This study has two goals. First, the electric field gradient (EFG) present in the liquid-crystalline phases of ferroelectric FELIX-RD one arises from the quadrupole moments of the liquid crystal molecules (external contribution) and the other one fro
Publikováno v:
Russian Chemical Bulletin. 62:1985-1990
1-Ethyl-3-methylimidazolium acetate was studied by NMR relaxation. The temperature dependences of the spin-lattice relaxation rates (1/T1) for 1H and 13C were obtained. The curves with maxima were observed for the majority of the temperature dependen
Publikováno v:
The Journal of Organic Chemistry. 78:5153-5159
Peptide nucleic acid (PNA) building blocks, bearing a fluorine sensor at C-5 of the uracil base [viz. trifluoromethyl and 3,3-bis(trifluoromethyl)-4,4,4-trifluorobut-1-ynyl], were synthesized and incorporated to a PNA strand, and their applicability
Unexpected Temperature Behavior of Polyethylene Glycol Spacers in Copolymer Dendrimers in Chloroform
Autor:
Vladimir I. Chizhik, Vladimir V. Matveev, Anastasia V. Penkova, M. N. Nikolaeva, Erkki Lähderanta, Natalia Boiko, Denis A. Markelov, Petri Ingman
Publikováno v:
Scientific Reports
We have studied copolymer dendrimer structure: carbosilane dendrimers with terminal phenylbenzoate mesogenic groups attached by poly(ethylene) glycol (PEG) spacers. In this system PEG spacers are additional tuning to usual copolymer structure: dendri
Autor:
Erkki Lähderanta, Petri Ingman, Vladimir V. Matveev, Ashok K. Adya, Mikhail Zubkov, Oleg N. Kalugin
Publikováno v:
Physics and Chemistry of Liquids. 49:746-752
1H-, 2H- and 13C-NMR spectra have been used to test the Ni2+ solvation shell composition in the 1.1 molal methanol solution of NiCl2. It has been confirmed that Cl− anion takes part in the nearest environment of Ni2+ cation at all the temperatures
Publikováno v:
The Journal of Physical Chemistry B. 110:16232-16238
(19)F single-quantum (SQC) and (19)F-(33)S heteronuclear multiple-quantum coherence (HMQC) NMR spectroscopy of sulfur hexafluoride (SF(6)) dissolved in thermotropic liquid crystals (TLCs) were used to investigate the properties of TLCs. On one hand,
Publikováno v:
Talanta. 59:177-189
Structural information of natural organic matter (NOM) at the molecular level is very essential in understanding their nature and reactivity. Nuclear magnetic resonance (NMR) is an excellent tool for estimating the gross chemical composition of the v
Autor:
Vladimir V. Matveev, Petri Ingman, Vladimir I. Chizhik, Denis A. Markelov, Erkki Lähderanta, Ekaterina A. Brui
Publikováno v:
Physical chemistry chemical physics : PCCP. 16(22)
The temperature dependencies of (13)C NMR relaxation rates in [bmim]PF6 ionic liquid have been measured and the characteristic times (τc) for the cation reorientation have been recalculated. We found the origin of the incorrect τc temperature depen
Publikováno v:
Talanta. 55:733-742
Aquatic humic solutes were separated in parallel by the non-ionic macroporous DAX-8 and XAD-8 resins from four different fresh water sources. On average, the sorptive power of the DAX-8 resin does not differ systematically from that of the XAD-8 resi