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Binder driven self-assembly of metal-organic cubes towards functional hydrogels

Author

Listed:
  • Papri Sutar

    (Jawaharlal Nehru Centre for Advanced Scientific Research)

  • Venkata M. Suresh

    (Jawaharlal Nehru Centre for Advanced Scientific Research)

  • Kolleboyina Jayaramulu

    (Jawaharlal Nehru Centre for Advanced Scientific Research)

  • Arpan Hazra

    (Jawaharlal Nehru Centre for Advanced Scientific Research)

  • Tapas Kumar Maji

    (Jawaharlal Nehru Centre for Advanced Scientific Research)

Abstract

The process of assembling astutely designed, well-defined metal-organic cube (MOC) into hydrogel by using a suitable molecular binder is a promising method for preparing processable functional soft materials. Here, we demonstrate charge-assisted H-bonding driven hydrogel formation from Ga3+-based anionic MOC ((Ga8(ImDC)12)12−) and molecular binders, like, ammonium ion (NH4+), N-(2-aminoethyl)-1,3-propanediamine, guanidine hydrochloride and β-alanine. The morphology of the resulting hydrogel depends upon the size, shape and geometry of the molecular binder. Hydrogel with NH4+ shows nanotubular morphology with negative surface charge and is used for gel-chromatographic separation of cationic species from anionic counterparts. Furthermore, a photo-responsive luminescent hydrogel is prepared using a cationic tetraphenylethene-based molecular binder (DATPE), which is employed as a light harvesting antenna for tuning emission colour including pure white light. This photo-responsive hydrogel is utilized for writing and preparing flexible light-emitting display.

Suggested Citation

  • Papri Sutar & Venkata M. Suresh & Kolleboyina Jayaramulu & Arpan Hazra & Tapas Kumar Maji, 2018. "Binder driven self-assembly of metal-organic cubes towards functional hydrogels," Nature Communications, Nature, vol. 9(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05818-w
    DOI: 10.1038/s41467-018-05818-w
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