After synthesis, I kept it for crystalization in the oven for 5-7 days. I have a few questions related to this:
1) Does sonication time affect the edges of MOF
2) at what stage do we take samples for TEM: after synthesis or after crystalization
3) Amount (weight) of MOF used to prepare the TEM grid
Rahul Verma
1. Ultrasound creates areas of compression and tension in the material and therefore the processing time affects the inside and edge of the sample
2. TEM measures the distances between the electron planes of a crystal by Bragg scattering. Therefore, you need to wait for crystallization
3.There is a grid size. Why even more?
1. Sonication will disintegrate the solid into solution, during the mixing of reaction components, sonication helps in homogenization.
2. depends on your study. after crystalization morphology and structural information, however before crystalization, you never know the content of the mixture,
3. usually crystals after crystalization are too big for TEM grid, better to sonicate to make suspension suitable for grid size
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