How to calculate stokes shift of a molecule which is having absorbance at 307 nm and emission at 469 nm?

how to calculate stokes shift of a molecule which is having absorbance at 307 nm and emission at 469 nm?

10 November 2016 4,673 8 View

What is the effect of donating groups and with drawing groups on fluroscence of imidazo pyridine derivative connected to a moiety having ESIPT ?

what is the effect of donating groups and with drawing groups on fluroscence of imidazo pyridine derivative connected to a moiety having ESIPT ?

10 November 2016 4,974 0 View

What is the effect of isocyanide susbtituent on imidazo [1,2 a] pyridines fluorescence in GBB reaction?

what is the effect of isocyanide susbtituent on imidazo [1,2 a] pyridines fluorescence in GBB reaction? example ; t-butyl, cyclohexyl, 2,6 di-me phenyl, 4-OMePh, benzyl isocyanides

10 November 2016 5,780 0 View

Is push and pull mechanism related to Imidazo(1,2,a) pyridine-3-amines synthesized by Grobke-blackburn beinyme reaction?

Is push and pull mechanism related to Imidazo(1,2,a) pyridine-3-amines synthesized by Grobke-blackburn beinyme reaction

05 June 2016 7,259 1 View

Is push and pull mechanism related to Imidazo(1,2,a) pyridine-3-amines in fluorescence activity synthesized by Grobke-blackburn beinyme reaction?

Is push and pull mechanism related to Imidazo(1,2,a) pyridine-3-amines in fluorescence activity synthesized by Grobke-blackburn beinyme reaction?

05 June 2016 3,643 0 View

Is 1-(2-bromophenyl)-2-naphthaldehyde fluorescent and it comes polar to 1 bromo-2-napthaldehyde in TLC?

is 1-(2-bromophenyl)-2-naphthaldehyde fluorescent and it comes polar to 1 bromo-2-napthaldehyde in TLC?

08 September 2015 7,113 1 View

Why C-3 position is more reactive than C-2 in imidazo pyridines?

04 May 2015 4,240 1 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 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

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to remove DCU and HOBT from my reaction?

I am doing a acid and a chiral amino alcohol reaction using DCC and HOBT in DCM or THF? Can anyone suggest me how to remove DCU and HOBT from a reaction mixture??

28 February 2021 2,153 1 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

What is the biochemistry of acidic solvents for phenolics extraction in strawberry?

I am using the Folin-Ciocalteu method for analysis of total phenolic content in ripe strawberries. I've read several protocol that suggest a methanol/H2O/formic acid (80:19:1) extraction solution....

22 February 2021 6,560 3 View