image/svg+xml Follow

I'm looking for a tame biochemist who I can bother with silly molecular physics questions about chlorophyll and excited states and charge separation and things.

Can anyone help me out?

I'm just going to ramble, in case anyone is listening and has insights.

So I've been trying to find out what role the Mg plays in chlorophyll and I've found nothing but a whole bunch of non-answers and vague handwaving.

Synthetic photosensitisers have excitation mechanisms involving the metal centre. In Ruthenium tris-bipyridine, for instance, an electron on the Ru2+ atom is excited, and the charge is transferred to a ligand (MLCT) by intersystem crossing. Which means charge separation, etc, etc.

But Mg2+ has the same electron configuration as Ne, and effectively has no valence electrons. So what's the excitation mechanism when the metal centre is Mg? LMCT?

Re: chlorophyll Show more

Re: chlorophyll Show more

Sign in to participate in the conversation
Scholar Social

A Mastodon instance for academics

Scholar Social is a microblogging platform for researchers, grad students, librarians, archivists, undergrads, academically inclined high schoolers, educators of all levels, journal editors, research assistants, professors, administrators—anyone involved in academia who is willing to engage with others respectfully.

We strive to be a safe space for queer people and other minorities, recognizing that there can only be academic freedom where the existence and validity of interlocutors' identities is taken as axiomatic.

"A Mastodon profile you can be proud to put on the last slide of a presentation at a conference"

"Official" monthly journal club!

(Participation is, of course, optional)

Scholar Social features a monthly "official" journal club, in which we try to read and comment on a paper of interest.

Any user of Scholar Social can suggest an article by sending the DOI by direct message to and one will be chosen by random lottery on the last day of the month. We ask that you only submit articles that are from *outside* your own field of study to try to ensure that the papers we read are accessible and interesting to non-experts.

Read more ...