Which kind of dyes can easily form J-aggregate?

More Nasrin Asgari's questions See All

"J-aggregation of dye by Langmuir-Blodgett" ?

Can you help me please, How can I make sure about the formation J-aggregation of (PIC) dye on solid substrate by Langmuir-Blodgett technique? Is there any other way except uv-visible absorption...

11 December 2017 8,537 7 View

What happened to my material? " SIGMA-ALDRICH, 1,1′-Diethyl-2,2′-cyanine iodide"?

I have bought 100 mg of "1,1′-Diethyl-2,2′-cyanine iodide" or "Pseudocyanine iodide" from Sigma. The material that I bought is a white powder (look like white particles), but I have read on the...

07 August 2017 1,244 2 View

"Area per molecule for J-aggregation of Cyanine dyes by Langmuir-Blodgett technique"?

I wan to create J-aggregation of pseudoisocyanine dye by Langmuir-Blodgett technique and I am going to use Arachidic acid to do this. Now my question is "how much is the area per molecule for...

07 August 2017 4,288 2 View

"Creating J-aggregation of Cyanine dyes by Langmuir-Blodgett technique"?

For creating J-aggregation of cyanine dyes such as pseudoisocyanine dye by Langmuir-Blodgett trough, which one in better? 1: dissolving this dye and Arachidic acid in chloroform/methanol mixture,...

07 August 2017 1,514 4 View

How can I create Carboxylate modified polystyrene nanospheres?

I have polystyrene spheres with diameter of 800nm that are suspended in water, can I create carboxylate modified polystyrene with them?

04 May 2017 9,104 5 View

How can I create a J-aggregation of dye molecules on a glass substrate?

In generals, What methods are there to create a J-aggregation of dyes (for example Rhodamine) on a glass substrate? and how can I use L-B technique for that?

01 February 2017 8,685 2 View

Does the angle theta change during Langmuir film formation, in wilhelmy plate?

As we know in Langmuir film formation in the Langmuir-Blodgett trough, surface tension changes as the barrier moves, but my question is: in addition to force, does the angle theta change during...

31 December 2016 2,249 6 View

Can anyone help me to choose a balance for my L-B trough?

I want a microbalance for my trough and I want to know the minimum level of accuracy considering its suitable price. I have read in the following manual that the balance should be capable of...

31 December 2016 2,650 1 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Basis set and input instruction to calculate HOMO and LUMO using Orca for Imidazolium based organic salts?

Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...

09 August 2024 5,444 7 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

How can I measure the thickness of thin film by Uv-Vis?

06 August 2024 7,810 3 View

Could dyes amplify the spectrum of light to a specific wavelength?

I am interested to know the behavior of dyes toward light. Specifically, Blue dyes re-emit the spectrum, especially from the green zone (known as principal in LED lamps, and blue dyes are known...

05 August 2024 3,290 1 View

In the presence of VERY high concentration (1000 ppm) of silicon, the adsorption isotherms of arsenic are showing anomalous trends, why so?

I conducted an adsorption experiment of arsenic on soil in the presence of different doses of silicon as competing ions to see the effect of silicon on arsenic adsorption and desorption. I took 5...

03 August 2024 6,500 3 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View

How to convert g/kg Humic acid dose to kg/ha?

I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?

02 August 2024 7,186 6 View

Leo Vleugels

Hi Nasrin,

I found the article I meant to send you earlier. I remembered your question and found it yesterday when I was archiving some older articles. Please see the included article, I think this is what you want to do, right?

Kind regards, Leo

Nasrin Asgari

Thank you so much Mr. Vleugels.

Yes it is very helpful, I have read it.

Aafaq A Tantray

refer this article, this will be helpful for u ;Spectroscopic study of the dimerization of rhodamine 6G in water and different organic solvents.

Thank you Mr. Tantray, it is a good article, but I want to create J-aggregate by Langmuir-Blodgett technique and on a solid substrate like a glass.