Gopi Kalaiyarasan

6 Questions 22 Answers 0 Followers

Questions related from Gopi Kalaiyarasan

Excitation spectra vs Absorbance spectra?

I have excitation spectrum at 370 nm of wavelength when 520 nm of emission wavelength. But I did not get any of absorbance at 370 nm in UV-Vis spectrum for same sample. What is the reason for...

07 July 2018 5,026 0 View

What is the reason for the shift in fluorescence emission spectra with excitation wavelength, even it is excitation independent fluorescence emission?

What is the reason for the shift in fluorescence emission spectra with excitation wavelength, in the case of excitation independent fluorescence emission? Please see attached figure. It is...

04 April 2018 8,920 2 View

How to prevent TEM grid from damage while exposure with electron beam at high magnification?

Dear all, I used carbon coated copper grid 200 mesh for my sample (gold nanoclusters dispersed in ethanol) to get images. Sometimes I got different types of ring-shaped damage after few...

11 November 2016 540 10 View

How to convert potential from Normal Calomel Electrode to Reversible Hydrogen Electrode?

The pH is 12, Thank you in advance...

02 February 2016 8,293 1 View

Aggregation Induced Emission (AIE) and Aggregation Induced Emission Enhancement (AIEE)

I want to know the mechanism of electronic state & its changes during Aggregation Induced Emission (AIE) and Aggregation Induced Emission Enhancement (AIEE). Some reports says the reason for...

01 January 1970 5,056 4 View

How can I find particle size for fluorescent nano metal clusters or quantum dots using dynamic light scattering particle size analyser?

I am getting always wrong size of particles (size calculated from HRTEM image, and UV-Vis spectra) for fluorescent gold clusters and carbon quantum dots. but DLS spectra gives reliable results for...

01 January 1970 7,870 1 View