Why is there no peak for H of OH groups in polysaccharide derivative H-NMR in DMSO-d6?

04 May 2015 2,509 18 View

How can I calculate the wall thickness for a vacuum distillation system?

01 February 2015 8,757 10 View

How to prepare galacturonic acid oligomer?

I want to prepare galacturonic acid oligomers with 5-8 repeating units. How should I do this? Is it possible to prepare it from pectin hydrolysis? How?

10 November 2013 9,685 5 View

Polyethylene glycol isocyanate preparation by curtius rearrangment?

How can I convert the monomethyl-PEG-COOH (M.W 500 dalton) to its isocyanate derivative? I think using of curtius rearrangement is possible, but I couldn't find any references for this conversion...

10 November 2013 7,816 0 View

Nitrie or amide reduction to amines?

I'm going to prepare a polyamine from polyacrylamide or polyacrylonitrile. I want to know if the Clemmensen reduction is a good way to convert the nitrile or amide groups into the amines? Does...

09 October 2013 7,546 5 View

What are the best conditions for making nanogels?

I want to make some nanogels and I have some questions: 1. What is the best method for making nanogels? 2. Is it possible to make a nanogel using a water soluble polysaccharide (such as chitosan...

09 October 2013 7,938 5 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

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

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

How can I calculate the rdf of water molecules around 'Na' ions that are closest(adsorbed) to the nanoparticle(solute)?

Hi, I want to calculate the radial distribution function for water molecules around the Na+ ions adsorbed on the surface of a spherical nanoparticle using the gromacs trajectory dynamically? For...

28 February 2021 5,650 1 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View