Formation of Supramolecular Polymers from Porphyrin Tripods

Hosoowi Lee, Dajung Lee, Inhye Kim, Eunji Lee, Woo Dong Jang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A porphyrin tripod (PZnT) composed of three zinc porphyrin wings connected via triazole bridges was prepared as a monomeric building block for a supramolecular polymer. PZnT formed long fibrous supramolecular polymers with a diameter of 7 nm through the axial coordination of triazole nitrogen atoms to zinc porphyrins. The molecular packing structure of a PZnT-based supramolecular polymer was assigned as a hexagonal columnar phase. PZnT formed a stable 1:1 host-guest complex with 1,3,5-tris(4-pyridyl)benzene (Py3B) through axial coordination of pyridyl groups to zinc porphyrins. The host-guest complex between PZnT and Py3B adopts a cone-shaped geometry. After the addition of Py3B, the host-guest complex exhibited a characteristic X-ray diffraction pattern of rectangular columnar ordering. Furthermore, the formation of supercoiled helical fibrous assemblies was observed by transmission electron microscopy (TEM).

Original languageEnglish
Pages (from-to)8060-8067
Number of pages8
JournalMacromolecules
Volume53
Issue number18
DOIs
Publication statusPublished - 2020 Sep 22

Bibliographical note

Funding Information:
This work was supported by the Mid-Career Researcher Program (2020R1A2C3004520, 2017R1A2A1A17069537, and 2019R1A2B5B01070463) funded by the National Research Foundation (NRF) of Korea. All of the picosecond time-resolved fluorescence measurements were performed using the Femtosecond Multidimensional Laser Spectroscopic System (FMLS) at the Korea Basic Science Institute (KBSI).

Funding Information:
This work was supported by the Mid-Career Researcher Program (2020R1A2C3004520, 2017R1A2A1A17069537, and 2019R1A2B5B01070463) funded by the National Research Foundation (NRF) of Korea. All of the picosecond timeresolved fluorescence measurements were performed using the Femtosecond Multidimensional Laser Spectroscopic System (FMLS) at the Korea Basic Science Institute (KBSI).

Publisher Copyright:
Copyright © 2020 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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