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Chinmayananda Gouda

Chinmayananda Gouda

National Chiao Tung University, Taiwan

Title: Insights into linear supramolecular polymer formation via TPE and BODIPY containing host-guest interaction

Biography

Biography: Chinmayananda Gouda

Abstract

We report the construction of novel host H1 and guest G1 consisting TPE and BODIPY linked together with the dibenzo- 24-crown-8 macro cycle and secondary ammonium salt respectively for the host guest interactions. As a proof of concept recognition of secondary ammoniums by 24-crown-8 macro cycle resulted a linear supramolecular polymer (pseudorotaxanes) in situ where the main chain was composed of TPE and BODIPY as a donor-acceptor pair. Occurrence of intra molecular FRET from TPE to BODIPY and related prominent changes into absorption bands determined the stoichiometric ratio as the primary evidence of polymerization which were then further confirmed by 1H-NMR and other spectroscopic techniques. Moreover, interaction of host macro cycle with K+ ion destructed the supramolecular polymer formation, which was a property of the reporter groups. Interestingly, cation characteristics of triazoles into guests under acidic conditions were also capable of destructing the conjugates of host and guest of polymer, especially due to electrostatic repulsion. Overall, cleavage of supramolecular assembly via interaction of K+ ion and cationic triazoles may push the limit of polymer towards exploring the critical mechanism involving such events in biology or other applications.

Recent Publications

 

  1. Chen D, Zhan J, Zhang M, Zhang J, Tao J, Tang D, Shen A, Qiua H and Yin S (2015) A fluorescent supramolecular polymer with aggregation induced emission (AIE) properties formed by crown ether-based host–guest interactions. Polym. Chem. 6:25-29.
  2. Meng LB, Li D, Xiong S, Hu XY, Wang L and Li G (2015) FRET-capable supramolecular polymers based on a BODIPY-bridged pillar[5]arene dimer with BODIPY guests for mimicking the light-harvesting system of natural photosynthesis. Chem. Commun. 51:4643-4646.
  3. Fu X, Gu RR, Zhang Q, Rao SJ, Zheng XL, Qu DH and Tian H (2016) Photo-triggered supramolecular polymerization of a [c2]daisy chain Rotaxane. Polym. Chem. 7:2166-2170.
  4. Wang Y, Ping G and Li C (2016) Efficient complexation between pillar[5]arenes and neutral guests: from host–guest chemistry to functional materials Chem. Comm. 52:9858-9872.
  5. Li H, Fan X, Qi M, Yang Z, Zhang H and Tian W (2016) Supramolecular Alternating Polymer from Crown Ether and Pillar[5]arene-Based Double Molecular Recognition for Preparation of Hierarchical Materials. Chem. Eur. J. 22: 101-105.