Mechanically locked capsule captures oppositely charged guests

By combining hydrogen bonding and mechanical bonding, scientists in Spain have made a mechanically locked capsule that can encapsulate two oppositely charged ions. 

molecular capsule

Pablo Ballester and Marco Chas, at the Institute of Chemical Research of Catalonia, Tarragona, made the capsule’s two hemispheres out of a calix[4]pyrrole and a calix[4]arene. The calix[4]pyrrole uses hydrogen bond interactions to recognise anions or N-oxide  guests while the calix[4]arene provides efficient cation-π and CH-π interactions for co-encapsulated guests. The capsule can fit two neutral or oppositely charged guests and the encapsulation is reversible. 

If this has captured your attention, download Ballester’s Chemical Science Edge article for free and read more.

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4 Responses to “Mechanically locked capsule captures oppositely charged guests”

  1. the new fpu student says:

    Congratulations for this very nice job!! I know it’s a really time-consuming synthesis… and the purification is even worst!

  2. Awesome guy says:

    It can be a hot paper but it’s taking me hours to read it! Just kidding, congrats on your great work Marcos! I’m really eager to follow your steps.

  3. PB4 PR says:

    Really nice work…afforded with smartness and passion for a such peculiar field (supramolecular chemistry is just for elected). Congrats Dr.Chas! the pictures are absolutely awesome!

  4. PB4 KS says:

    Excellent work Marcos! I wish you all the best and to continue with great work.

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