12 Questions 21 Answers 0 Followers
Questions related from Marius Ciobanu
I want to prepare ATO transparent, conductive films using doctor blade method on transparent conductive substrates. For this porpose I use an aqueous ATO colloidal solution containing 15-30% (wt)...
06 June 2017 1,137 5 View
The polarized-light micrograph in the attachment corresponds to an ionic liquid crystal material based on ion pairing of dicationic 4,4' bipyridinium capping two thymine groups with amphiphilic...
07 July 2014 2,221 9 View
There are several factors affecting the reduction of dicationic 4,4'-bipyridinium derivatives ("viologens") such: solvent, charge transfer interactions, substituents at the nitrogen atoms, counter...
04 April 2014 7,337 1 View
The only information available for me is that adenine has a melting point of 360°C. Any one known examples of adenine containing derivatives that undergo thermal decomposition or thermal-induced...
02 February 2014 310 1 View
I performed typical temperature-dependent UV-VIS measurements at a fixed wavelength (260 nm) of a DNA probe (Tm experiments). For the samples very diluted the absorbance does not remain constant...
01 January 2014 1,249 6 View
The 1H-NMR spectra of the paraquat (1,1'-Dimethyl-4,4'-bipyridinium dichloride) in D2O is characterized by 2 doublets pecks in aromatic region: at 9.12 ppm, called "orto-protons" and respectively...
10 October 2013 1,369 6 View
How can I avoid signal peak broadening in H-NMR spectra due to self-aggregation of molecules in deuterated low-polar solvents (such CDCl3 or THF-d8)? This self-aggregation is due to H-Bond formed...
05 May 2013 5,571 34 View
I performed synthesis of a new sulfonic compound with very good spectroscopic integrity but with a small trace of hygroscopic water (less then 2%). This content of water influenced the Carbon...
05 May 2013 5,456 4 View
I run Cyclic Voltammetry in low-polar solvent such as THF. The high resistance of this electrolyte causes a significant iR drop with effect on the cyclic voltammograms. My question is, can I...
05 May 2013 6,418 21 View
I am trying to perform cyclic voltammetry of a suspension of Carbon Black Particles (CB) in aqueous electrolyte solution. My goal is to make an analytical study of redox functional groups existing...
03 March 2013 1,674 24 View
I perform a reaction of a 4,4'-bipyridine N-monosubstituted derivative with an alkyl-bromide substrate (Menschutkin type reaction). For more details see the attached file. The reaction works in...
01 January 2013 1,657 10 View
I’m working with surface modified electrodes based on TiO2 mesoporous film coated on transparent FTO-Glass with a thickness of about 4 um.
07 July 2012 5,453 14 View