Steven Roldan (スティーヴン)

A new low-energy chemical recycling method using boron and gallium can convert common silicone waste into useful chlorosilanes with high efficiency and yield. The method offers a promising new chemical pathway toward circularity in silicone materials. Learn more in Science: scim.ag/3ES2jTb

One of the masterminds behind this great work: @J_Raynaud_PhD .

Really happy to see our latest work out @ScienceMagazine ! Recycling silicone waste with the power of chemistry.✨✨✨ science.org/doi/10.1126/sc…

Check this awesomeness from @sam_chem : chemdle.com, a wordle for organic chemists. Each day you have six tries to solve the daily chemistry problem, from named reactions and drug syntheses to neat totsyns.

@QP_Chem @GroupItemm @esrfsynchrotron @ESRF_FR @RioJordan18 Erratum: Grammar mistakes were made. That's what happens when you tweet without enough sleep. 😂

@QP_Chem @GroupItemm @esrfsynchrotron @ESRF_FR @RioJordan18 It has been a great experience. Really amazing facilities inside and also what an amazing location. The spring time also makes the the free time way more nicer. 😊

After a lot of tuning and a bunch of adventures, @GroupItemm finally has its first bunch of X-ray absorption data 💫 The staff at BM16 (FAME-UHD) @esrfsynchrotron @ESRF_FR was amazing in solving our set up issues and accommodating our whimsical samples !#Realtimechem #Chemistry

2 PhD and 1 Postdoc positions in Computational Biochemistry and Biocatalysis are open in the group of Marc Garcia-Borràs (@MarcGBQ) and Ferran Feixas (@ferranfeixas) at the @IQCCUdG @univgirona #compchem

A highlight about his work in @Chem2W! sciencelink.net/news/bonding-m…

Our latest research paper is a collaboration with my good friend Peter O'Brien. He works with highly reactive organolithiums - we thought gels might make them safer & simpler to handle. They did! Even if we dropped one in water, the reaction still worked. nature.com/articles/s4155…

We're offering a 1 year post-doc position to work under my supervision on the Supra CarVoltaic project (with @ribas_xavi as co-PI). Exploiting supramolecular chemistry to obtain next-gen photovoltaic materials (NGs, fullerenes). Inquiries agusti.lledo at udg dot edu

@CYL_Lab Are you still isolating/resolving issues for CYLview20? In my case, I am not able to visualize any structures in the GUI. However, it shows information in the data tab & analyze tab when opening an gaussian ouput.

CYLview Users (Windows): Please DM me if you were not able to run CYLview20 and had to return to CYLview 1.0. I would like to isolate and resolve the issue that is preventing you from using the newest version. #CYLview20 #CYLview

Time to start new challenges >:)

Fully-funded PhD position 👩‍🔬🧑‍🔬 @Chemistry_QMUL to work with me in London🇬🇧 and explore synergistic effects between low-valent MG organometallics and light towards catalysis! Details here Deadline: 31st January 2023 findaphd.com/phds/project/s…

@janhjensen @kjelljorner My issue is with the conformers generated by CREST ( Since the SDF input doesn't seem to work well and the SDF output also have charge assignment issues). In principle the connection shouldn't change.

@kjelljorner @SevenRoldan As long as the connectivity doesn’t change during a QM geometry optimization…

It seems that converting XYZ files to SDF files (when the molecule is charged) do not seem to be a trivial thing, does anybody know a solution to this? So the SDF gets the right charge value without changing the original bond orders. #compchem #cheminformatics @kjelljorner

@kjelljorner @janhjensen I did try obabel. However, it creates an SDF with neutral charge even when the imput was not. I will try xyz2sdf to see if it works. Thanks!

@SevenRoldan This is a notoriously difficult problem as you need to deduce the chemical bonding based on only the atomic coordinates. I would recommend openbabel or github.com/jensengroup/xy… but they will probably not be very robust for charged species. @janhjensen might know more.

I don't understand the "postdoc" positions in the industry. What are they? Underpaid scientists? They seem to be a bad influence from academia. @AcademicChatter #AcademicTwitter

Iran matters But why? Check out this short video. #OpIran #IranProtests2022

@alic1a_casitas @JoanSP Felicidades!!