Ep8 ATRP and RAFT - UC San Diego - NANO 134 Darren Lipomi

Differences between free radical and controlled radical polymerization. Details of atom-transfer radical polymerization (ATRP) and reversible addition fragmentation transfer (RAFT) polymerization.
lipomigroup.org

[@vyshakmp3359]

Bonjour Professor, Thank you so much for explaining the controlled radical polymerization techniques, especially RAFT polymerization. It helps a lot, please keep posting good lectures like this.

[@djlipomi]

Glad it was helpful!

[@snowmister2]

Surprising lack of youtube videos on RAFT. Super cool mechanism - it seems underappreciated. Thank you for sharing!

[@djlipomi]

Thanks!

[@guikeenan]

I like the lecturing style of Prof. Lipomi in general! There are however a coupe of issues here, Just two now: - A wrong statement on the evolution of the average molecular weight in free-radical polymerization ("hockey stick"). This metaphor is valid for step-growth polymerizations. For free-radical polymerization, Mn = f(conversion) is a slowly decreasing curve, since long chains (but never as long as what RDRP/CRP can achieve at high conversion) are formed from the start and chains continuously initiated and quickly terminated become progressively shorter (as monomer concentration decreases). - NMP is actually quite tolerant to functional groups. ATRP not much more, could be less in fact (acrylic acid for instance does not work by ATRP, as opposed to NMP). NMP presents indeed the disadvantage to not (well) work with some monomer types due to nitroxide-based H-abstraction. And a further downside is the required thermal activation, which can sometimes be unpractical. Other than that, this is a pretty versatile method too. Why isn't it used more (vs ATRP or RAFT polymerization)? The good nitroxides are not commercial.

[@gavinirvine2725]

Very useful, thanks for posting these. Started a PhD at Queen's University Belfast recently and this provided a good background into RAFT.

[@djlipomi]

Awesome, thanks! And good luck.

[@AndyU96]

Hey darren, thanks for your touch on the point of the CN group, you better not be lying.

[@subalchandramandal5196]

Excellent dear Sandipan

[@plh8219]

Thanks a lot for your lectures, which is super helpful to me for learning Polymer Chemistry ❤❤❤

[@natap.8681]

Thank you so much !!!! Greeting from Thailand.

[@djlipomi]

You're welcome! Glad you find the videos helpful.

[@joeyling5842]

Hi thank you so much for your videos they are truly the best ! I was wondering if you could explain more about the NMRP and TEMPO being unable to be used on polar monomers :) THank you

[@subalchandramandal5196]

Thanks for your lecture in Hindi.

[@subalchandramandal5196]

It is quite interesting to note polymerisation of bromide

[@iemrun1]

i hope i can pass my QE this end of month.thanks well explains and so much better than my profesor haha

[@djlipomi]

Thanks and good luck!

[@trinhthien426]

thank you so much for helful videos. I am really fascinated by your excellent lectures, you are a great teacher.

[@subalchandramandal5196]

Excellent Prof

[@FantasticHermitCrab]

"It generates the radical by sucking the bromine off." -Dr. Darren Lipomi, 2017

[@Baribal88]

Nice stuff, THX

[@Mtj622]

Your videos are so incredibly helpful, thank you!

[@djlipomi]

Thanks! Glad they are useful.

[@SakurabaAyane]

Aha! The 7th episode seems to be missing from the playlist.

[@subalchandramandal5196]

What's the function of initiator?

[@marfluca]

Excellent, thank you very much, warm regards from Equator.

[@josesuarez8385]

que haces aquí fred jajaja

[@marfluca]

@@josesuarez8385 JAJAJAJA queriendo entender algo de síntesis :(

[@marfluca]

@@josesuarez8385 JAJAJAJA queriendo entender algo de síntesis :(

[@Chemsci-j1v]

such a great group of lectures. But seriously, who cares if someone is on their phone? If my profs were so stressful, id just skip the lecture and watch the video. Listen if you want, don't if you don't. It's their schooling.

[@akiolukban6645]

I swear nobody's noticing his humor

[@user-dh3iq7oi8v]

thank you it's really helpful

[@danielconsolisilveira7037]

Thank you from Brazil, São Paulo State Univ.

[@miriamgarcia5467]

Thanks for this video!

[@djlipomi]

Sure thing! Thanks for watching.

[@islamelsheikh7161]

Thank you really very helpful explanation

[@djlipomi]

Glad you found the video helpful!

[@epicspartan10]

I know the guy who invented RAFT :)