Stimuli-Responsive Polydiacetylene Based on the Self-Assembly of a Mercury-Bridged Macrocyclic Diacetylene Dimer
- Authors
- Bae, Kwangmin; Lee, Dong Geol; Khazi, Mohammed Iqbal; Kim, Jong-Man
- Issue Date
- Apr-2022
- Publisher
- American Chemical Society
- Citation
- Macromolecules, v.55, no.7, pp.2882 - 2891
- Indexed
- SCIE
SCOPUS
- Journal Title
- Macromolecules
- Volume
- 55
- Number
- 7
- Start Page
- 2882
- End Page
- 2891
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/138982
- DOI
- 10.1021/acs.macromol.1c02583
- ISSN
- 0024-9297
- Abstract
- The metal-mediated self-assembly process allows the well-directed and controlled construction of supramolecular architectures, and the assembled metal-ligand complexes display diverse functionalities depending on the composition of the complex template. Through the deliberate introduction of a metal-binding nucleobase, cytosine, to the macrocyclic diacetylene (MCDA), a macrocyclic ligand, CytMCDA, was synthesized. On account of the metal affinity of cytosine and the π-πinteraction of the diacetylene template, a Hg-coordinated unidirectional columnar self-assembly of CytMCDA was generated that formed into organic nanotubes. The monomeric CytMCDA-Hg is covalently cross-linked to the blue-phase macrocyclic polydiacetylene nanotubes (CytMCPDA-Hg) via UV-induced topochemical polymerization. CytMCPDA-Hg displayed a naked-eye-detectable sensing response toward heat and solvents with a brilliant blue-red chromatic transition. Moreover, owing to the high affinity of the mercury complex toward sulfur, CytMCPDA-Hg displayed a high sensitivity against thiols.
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