Can we expect a reduction in the population of particles in SEM images in the form of particles and after making their films?

I took scanning electron microscope images of my samples in powder form and after coating their films. In powder form, a large number of particles can be seen however, in the films only a few...

06 July 2019 1,956 4 View

Which solvent is suitable for analysing the UV Vis spectra of a polydiacetylene compound?

I want to study UV Vis spectra of a polydiacetylene based compound. It is a polymer and is not soluble in most of the solvents. i tried dissolving it in ethanol, butanol, chloroform, DCM, THF, DMS...

09 October 2017 2,579 3 View

What makes some of the diacetylene compounds highly UV sensitive?

05 June 2017 2,994 4 View

How is shift in Raman peaks of polydiacetylenes related to change in their conjugation length?

The shift in Raman peaks implies increase or decrease of conjugation length of polydiacetylenes?

03 April 2017 1,698 3 View

Why is it important to purify a polydiacetylene compound before use? What are the methods to purify them?

If we use 10,12 pentacosadiynoic acid for a reaction, is it mandatory to purify it before use? How can it be purified, without loosing its color sensitivity?

02 March 2017 1,724 1 View

How is excitation energy transferred from the side group to the triple bond in diacetylene?

Diacetylenes are a conjugated system consisting of two triple bonds. The solid state polymerization of diacetylenes proceeds as 1,4-addition to the conjugated triple bonds and gives rise to...

06 July 2016 8,663 1 View

Can a hygroscopic chemical be insoluble in water?

Why?

04 May 2016 2,965 0 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

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 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

What is Nano technology with coronavirus helpe the human..and is it nano mterals removal of covid19?

I anwar by adsorption or reaction ..but it is either more method...

02 March 2021 4,811 2 View

How to compare different concentrations of nanoparticles for characterization from ICP-MS?

I took measurements of different concentrations of 15 nm and 5 nm Au nano particle solutions. I'm trying to determine which concentration I measured gives the best reading overall. I also...

02 March 2021 7,626 1 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View