An exotic band structure of a supramolecular honeycomb lattice formed by a pancake π–π interaction between triradical trianions of triptycene tribenzoquinone

Yoshiaki Shuku; Asato Mizuno; Ryo Ushiroguchi; Chang Seok Hyun; Young Jun Ryu; Byeong-Kwan An; Ji Eon Kwon; Soo Young Park; Masahisa Tsuchiizu; Kunio Awaga

doi:10.1039/C8CC00753E

An exotic band structure of a supramolecular honeycomb lattice formed by a pancake π–π interaction between triradical trianions of triptycene tribenzoquinone†

Yoshiaki Shuku,^a Asato Mizuno,^a Ryo Ushiroguchi,^a Chang Seok Hyun,^b Young Jun Ryu,^b Byeong-Kwan An,^b Ji Eon Kwon,

^c Soo Young Park,

^c Masahisa Tsuchiizu^d and Kunio Awaga

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
E-mail: awaga@mbox.chem.nagoya-u.ac.jp

^b Department of Chemistry, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon, Gyeonggi-do, Korea

^c Center for Supramolecular Optoelectronic Materials (CSOM), Research Institute of Advanced Materials (RIAM), Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea

^d Department of Physics, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan

Abstract

A supramolecular honeycomb lattice was successfully formed by using triradical trianion species of triptycene tribenzoquinone (TT) which forms strong intermolecular π–π pancake bonds toward three directions. The crystal structure of Rb₃TT·2H₂O belongs to the hexagonal P6/m space group, the tight-binding band calculation of which reveals Dirac cones and flat bands.

Chemical Communications

An exotic band structure of a supramolecular honeycomb lattice formed by a pancake π–π interaction between triradical trianions of triptycene tribenzoquinone†

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An exotic band structure of a supramolecular honeycomb lattice formed by a pancake π–π interaction between triradical trianions of triptycene tribenzoquinone

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