Everyone knows that PB equation assumes the charges as dots, but what happens if the inverted Debye constant is a little bit larger than the size of the ion bearing the charge ? For example the inverted Debye constant is 1.3 nm, while the ion is about 0.7 nm long (organic ion). If anyone is interested let's start discussion.
Dear Stoyan, thank you for initiating this interesting discussion, and sorry to see that no expert has responded yet. We work in synthetic inorganic chemistry, so that I'm not a proven expert in this theoretical field and cannot make a really qualified contribution. All I can do right now is suggest to you a potentially useful article. Please have a look at this paper:
Charged Membranes: Poisson-Boltzmann theory, DLVO paradigm and beyond
https://arxiv.org/pdf/1603.09451.pdf
This article is freely available as public full text on the internet (see attached pdf file).
I hope the my little 2 cent-contribution invites other RG members to participate in your interesting discussion. Good luck and best wishes!
Dear Frank,
Thank you very much. It is good to discuss this topic in the public space because it regards many research areas.
Thank you again.
Best regards,
Stoyan
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