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Questions related from Yin Li
Hi, Folks! I got some angle-dependent IR spectra of a crystal. I would like to make some DFT calculations to interpret these anistropic results. Accurate description of the direction of...
19 September 2023 5,492 2 View
Hi, Folks! I am going to use finite displacement (sometimes called finite difference if I am right) to calculate phonon of my crystal. As I read from some articles and online forums, we should...
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Hi, folks! I wanna measure the FT-IR spectra of some amino acids. I am going to prepare the plates made from the mixtures of amino acids crystals and KBr under 10 tons pressure. But I don't want...
17 December 2015 2,244 9 View
We all know that the inner filter effect has a significant influence on the fluorescence emission spectra. The high concentration results in lower emission intensity. I wonder whether this effect...
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My raw MWCNTs contain carbon nanoparticles as the first derivative of TGA curves show the presence of a wide shoulder (from 600 C till 700-760 C) on the right side of MWCNT (~600 C) combustion...
16 August 2014 8,585 17 View
Some of my received MWCNT showed 2G and D+G band in their Raman spectra? Is that normal? Or those MWCNT have already been damaged somehow?
27 May 2014 1,687 9 View
My fluorescence titration spectra show a blue shift in emission maximum of my compound during the quenching process. I guess there is an ultrafast ET process which is even faster than the...
08 February 2014 8,153 10 View
A blue shift of the emission peak of my compound upon the addition of quencher was observed. I guess there is an electron transfer between it and quencher. But I don't know how to explain this...
22 January 2014 2,564 17 View
My compound shows the maximum absorbance at around 260 nm. But the maximum intensity in excitation spectrum appears at 300 nm. The excitation spectrum has been corrected. I wonder which maximum...
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