Frederik Haase
@frederikhaase.bsky.social
Framework Materials Chemist (MOF, COF and other organic frameworks). Juniorprofessor at University of Halle, Germany
Posting about science.
https://orcid.org/0000-0003-1156-033X
https://www.chemie.uni-halle.de/ak_haase/
Posting about science.
https://orcid.org/0000-0003-1156-033X
https://www.chemie.uni-halle.de/ak_haase/
Today I am talking in my reticular materials class about the stability of MOFs, where I show this great figure of stability in phosphate buffer. It is always important to specify that stable means in what context! From this great paper: pubs.acs.org/doi/10.1021/...
November 26, 2025 at 8:10 AM
Today I am talking in my reticular materials class about the stability of MOFs, where I show this great figure of stability in phosphate buffer. It is always important to specify that stable means in what context! From this great paper: pubs.acs.org/doi/10.1021/...
Found it. It is the black curve. From this paper: onlinelibrary.wiley.com/doi/10.1002/...
November 26, 2025 at 8:03 AM
Found it. It is the black curve. From this paper: onlinelibrary.wiley.com/doi/10.1002/...
I am only only half joking. The closes molecule I ever found was tricyanobenzene which has only like 5 sharp lines in the IR and 3 peaks in the 13C NMR. But for the life of me I cannot find the IR anymore.
November 26, 2025 at 7:56 AM
I am only only half joking. The closes molecule I ever found was tricyanobenzene which has only like 5 sharp lines in the IR and 3 peaks in the 13C NMR. But for the life of me I cannot find the IR anymore.
This does seem very 1950s.
November 24, 2025 at 1:57 PM
This does seem very 1950s.
"TEM linear scanning energy spectrum" take a look at the green line
November 18, 2025 at 11:07 AM
"TEM linear scanning energy spectrum" take a look at the green line
and it is not porous
November 18, 2025 at 11:00 AM
and it is not porous
the PXRD also looks like it is not crystalline
November 18, 2025 at 11:00 AM
the PXRD also looks like it is not crystalline
November 18, 2025 at 10:57 AM
November 17, 2025 at 10:01 PM
One giant leap for us, one small step for digitization.
October 27, 2025 at 1:50 PM
One giant leap for us, one small step for digitization.
If you ever decide you want to make a COF for the first time, this one should be your first try. It is somewhat known in the community, but you will not really learn this from the literature this COF system is one of the most robust, in terms of synthesis and activation conditions.
October 23, 2025 at 12:11 PM
If you ever decide you want to make a COF for the first time, this one should be your first try. It is somewhat known in the community, but you will not really learn this from the literature this COF system is one of the most robust, in terms of synthesis and activation conditions.
Uhm...Hello...Yes...Yes, I am done...can you send the eagles now...alright...see you in a bit then...bye.
October 14, 2025 at 1:19 PM
Uhm...Hello...Yes...Yes, I am done...can you send the eagles now...alright...see you in a bit then...bye.
Anything but writing.
October 12, 2025 at 6:00 PM
Anything but writing.
My figures when the deadline is closing in.
October 11, 2025 at 6:09 PM
My figures when the deadline is closing in.
Many more of these absolute bangers can be found here:
www.icems.kyoto-u.ac.jp/_wp/wp-conte...
www.icems.kyoto-u.ac.jp/_wp/wp-conte...
October 9, 2025 at 7:49 AM
Many more of these absolute bangers can be found here:
www.icems.kyoto-u.ac.jp/_wp/wp-conte...
www.icems.kyoto-u.ac.jp/_wp/wp-conte...
The Nobel committee should have used this image for their presentation:
October 9, 2025 at 7:48 AM
The Nobel committee should have used this image for their presentation:
I think this figure needs more portraits.
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
October 8, 2025 at 7:46 AM
I think this figure needs more portraits.
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
one of the reported structures:
October 7, 2025 at 10:27 AM
one of the reported structures:
Uhmm... No thanks.
advanced.onlinelibrary.wiley.com/doi/10.1002/...
advanced.onlinelibrary.wiley.com/doi/10.1002/...
September 30, 2025 at 12:51 PM
Uhmm... No thanks.
advanced.onlinelibrary.wiley.com/doi/10.1002/...
advanced.onlinelibrary.wiley.com/doi/10.1002/...
Definitely the non-directional non-covalent interactions at fault.
September 30, 2025 at 6:29 AM
Definitely the non-directional non-covalent interactions at fault.
It is easy to forget that COFs are 2D materials, but sometimes it smacks you right in the face.
September 24, 2025 at 12:05 PM
It is easy to forget that COFs are 2D materials, but sometimes it smacks you right in the face.
I have an issue with cursed FFTs.
September 19, 2025 at 4:13 PM
I have an issue with cursed FFTs.
Clear case of duplicated images/ taking two pictures of the same sample at the same spot. They are supposed to be different materials and the scale bar is different:
@angewandtechemie.bsky.social
onlinelibrary.wiley.com/doi/10.1002/...
@angewandtechemie.bsky.social
onlinelibrary.wiley.com/doi/10.1002/...
September 14, 2025 at 12:00 PM
Clear case of duplicated images/ taking two pictures of the same sample at the same spot. They are supposed to be different materials and the scale bar is different:
@angewandtechemie.bsky.social
onlinelibrary.wiley.com/doi/10.1002/...
@angewandtechemie.bsky.social
onlinelibrary.wiley.com/doi/10.1002/...
I just spent an hour writing a polymer chain simulation from scratch to make a thumbnail size schematic figure.
Probably I should reevaluate my priorities.
Probably I should reevaluate my priorities.
September 11, 2025 at 7:49 PM
I just spent an hour writing a polymer chain simulation from scratch to make a thumbnail size schematic figure.
Probably I should reevaluate my priorities.
Probably I should reevaluate my priorities.
Come join our team! We have a PhD position available on noncovalent interactions in COFs. The position is part of the BEAM graduate school. (Details in the alt text)
September 3, 2025 at 6:53 AM
Come join our team! We have a PhD position available on noncovalent interactions in COFs. The position is part of the BEAM graduate school. (Details in the alt text)