Hi everyone,
I have a suspension of CsPbBr₃ perovskite nanocrystals (~8.26 nm) in toluene, but the exact concentration is unknown. I'm trying to estimate it using the Lambert–Beer law:
A=ε⋅c⋅l
I'm using:
- An absorbance of 0.501 at 335 nm.
- A reported molar absorption coefficient: ε=0.047⋅d3 µM−1⋅cm−1 (DOI: 10.1021/acs.jpclett.8b01065)
However, the calculated concentration comes out extremely low — around 0.0211 µM — which seems inconsistent, as the suspension looks visibly concentrated.
Any insight or reference would be appreciated. Thanks!
Beer lamberts law calculated by using an absorvance and molar absorption cofficient. I haven't worked with Beer Lamberts law So, any suggestion is apreciated!
Dear all, Beer-Lambert's law is applicable only for homogeneous and non-scattering liquid sample, which means suspension and dispersion are excluded, unless the law is modified to other forms. My Regards
https://www.sciencedirect.com/topics/engineering/beer-lambert-law#:~:text=Quantitative spectroscopy is based on,(c) %5B2%5D.
You may find extra help in the following free access paper.
https://doi.org/10.1002/cphc.202000464
- Badges
- Science topic
- Similar topics
- Philosophy
- Philosophy Of Science
- Reasoning