How this moiety can react with hypochlorite (ClO-)?

Hi, I have a question about the reaction between julolidine moiety and hypochlorite (ClO-). Please see below the scheme. The color change is very interesting. It changes from yellow to purple...

01 February 2020 6,407 1 View

What is the mechanism of peroxyacid synthesis?

http://www.orgsyn.org/demo.aspx?prep=cv6p0276 Hi, I synthesized peroxyacid according to above link. Also I checked that it was successfully synthesized. However, I've wondered why those reagents...

10 November 2018 4,867 0 View

How to interpret blue shifted emission and red shift UV-vis?

Hi, I want to interpret the mechanism of blue shift emission. I carried out some experiments about metal detection. The ligand showed green fluorescence and if the metal bound to the ligand,...

10 November 2018 7,822 4 View

How much is allowable range in ESI-MS analysis?

Hi, I'm wondering how broad the allowable range in mass spectrum and reason. (the gap between calculated exact mass and experimental data) I've known that the error range is 1 because of one...

07 August 2018 3,138 3 View

How can I calculate association constant in fluorescence by substitution of fluorescence intensity?

Hi, I want to calculate association constant through following method Talanta Volume 41, Issue 4, April 1994, Pages 599-609 However, I don't understand why I-I0 could be used. Could anyone...

06 July 2018 3,195 0 View

What is 'washing' meaning in organic synthesis?

Hi, I want to synthesis some compound and found references of them. However, I don't know what 'washing with NaHCO3 solution' means. (Please look at the picture) What is different from...

04 May 2018 8,784 9 View

Can solvent affect to coordination number?

Hi, I should prepare cobalt complex experiment using MIMT (2-mercapto-1-methylimidazole). In this experiment, the coordination numbers were changed depending on what solvent we use. In case of...

04 May 2018 8,520 2 View

Does the fluorophore have to act only as an electron donor?

Hi, I want to understand fully about ICT mechanism (intramolecular charge transfer) If the ligand having fluorophore doesn't have fluorescence and act as an electron acceptor (EWG), doest the...

03 April 2018 2,155 3 View

How can I separate organic layer with miscible solvent?

Hi, When I read this paper, I wonder how to separate organic layer with miscible solvent. (Bull. Chem. Soc. Jpn., 53, 1181-1182 (1980)) The ethylene glycol is miscible with HBr or sth. So it is...

03 April 2018 3,318 0 View

Why does nitro group(-NO2) have poor solubility in polar solvents?

Hi, I want to know why nitro group and also sulfonate group have poor solubility in water and other polar solvents(DMSO, DMF, MeOH, etc.). Actually I thought the reason is polarity but it...

03 April 2018 9,719 1 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View