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Helical Pore Alignment on Cylindrical Carbon
Author(s) -
Maruyama Jun,
Shinagawa Tsutomu,
Watanabe Mitsuru,
Kashiwagi Yukiyasu,
Maruyama Shohei,
Nagaoka Toru,
Matsuda Wakana,
Tsutsui Yusuke,
Seki Shu,
Uyama Hiroshi
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201905916
Subject(s) - polystyrene , materials science , carbonization , carbon fibers , circular dichroism , nanopore , confined space , inert gas , chemical engineering , composite material , nanotechnology , polymer , scanning electron microscope , chemistry , crystallography , organic chemistry , composite number , engineering
Interest in chiral substances has mainly focused on the substances themselves, but not on the accompanying space, especially regarding the pore alignment. As a method to form both the chiral substance and the accompanying space, cylindrical self‐assembly of uniform polystyrene nanoparticles with fructose is carried out in the presence of both carbon and sodium alginate, which is followed by heat treatment in an inert atmosphere. The carbonization generates fructose‐derived honeycomb‐like carbon walls with helically aligned nanopores left after the polystyrene decomposition. The diffuse reflectance circular dichroism measurements give peaks with opposite signs for the d ‐ and l ‐fructose‐derived cylindrical carbons. Circularly polarized light sensitivity in transient photoconductivity is confirmed apparently in the carbon‐based helical structures. This sensitivity as well as straightforward formation of composites with another component to give helicity shows potential applications of the helically aligned pores.