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Updated: Jan 22, 2026

Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
Preparation of a large-sized highly flexible carbon nanohoop
Yuta Nakagawa1, Ryuta Sekiguchi2, Jun Kawakami1
1Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori 036-8561, Japan. itsnj@hirosaki-u.ac.jp.
Abstract:
The preparation of large-sized carbon nanohoops 1 and 2 was acheieved by Pt-mediated macrocyclization of the diborylated hexa-peri-hexabenzocoronene (HBC) derivative containing four mesityl substituents at the periphery. The temperature-dependent NMR measurements revealed the highly flexible nature of the carbon nanohoop 1. Structural features of 1 and 2 were examined by comparison of photophysical and electrochemical measurements with those of the reference non-strained HBC derivative. Theoretical calculations clarified the possible molecular structure of the carbon nanohoops 1 and 2 and the structures involved in the dynamics.
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