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Questions related from Zeeshan Uddin
Is it possible to observe ion pairing (contact ion or solvent separated ion) of polyelectrolyte complexes through liquid FTIR? Although the PECs have been widely studied in the last two decades, I...
13 November 2020 4,990 1 View
I used TEM equipped with tungsten gun to obtain attached image (several other too, like shown). Side blotting technique followed by negative staining (1% PTA for 30 sec) was used. I cannot get the...
01 November 2020 2,068 5 View
Is there any technique that could effectively measure, either qualitatively or quantitatively, charge interactions between two charged polymers?
14 July 2020 4,519 1 View
I have been trying hard for a month to observe some definite structure of the biopolymer which was synthesized by our lab. The irony is it cannot be dissolved in any organic solvent and we are...
19 March 2020 1,731 1 View
I am trying to find any method or modification which may enable the use of upconversion nanoparticles as a heating source (Like gold nanoparticle). or any polymer having a stimulus in green light...
17 February 2020 6,609 3 View
I have been trying to coat MnCO3 microparticles having isoelectric point at pH 7.6 with different biopolymers in aqueous medium. 1. As per my understanding MnCO3 should have positive charge...
03 December 2019 226 3 View
Dear all, I have coated MnCO3 microparticles with different biopolymers through Layer-by-layer approach. I am not sure how to analyze the sample under SEM. I fear sputtering might damage the...
03 December 2019 2,194 4 View
I am trying to utilize schiff base reaction for the formation of secondary amine by linking two polymers. In my NMR, I can observe a very sharp peak of reasonable intensity at about 1.3 ppm. How...
12 September 2019 5,020 7 View
