Short-step synthesis and chiroptical properties of polyaza[5]-[9]helicenes with blue to green-colour emission

Takashi Otani; Takuma Sasayama; Chisaki Iwashimizu; Kyalo Stephen Kanyiva; Hidetoshi Kawai; Takanori Shibata

doi:10.1039/d0cc01194k

Short-step synthesis and chiroptical properties of polyaza[5]-[9]helicenes with blue to green-colour emission

Takashi Otani^*, Takuma Sasayama, Chisaki Iwashimizu, Kyalo Stephen Kanyiva, Hidetoshi Kawai, Takanori Shibata

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

We have developed a two- or three-step synthesis of polyaza[5]-[9]helicenes by consecutive N-H/C-H coupling with a hypervalent iodine reagent. We further evaluated their photophysical properties, and circularly polarized luminescence properties and found that g_lum values increase with the number of fused rings up to 2.7 × 10^-2, which is the highest value among [9]helicenes.

Original language	English
Pages (from-to)	4484-4487
Number of pages	4
Journal	Chemical Communications
Volume	56
Issue number	32
DOIs	https://doi.org/10.1039/d0cc01194k
Publication status	Published - 2020 Apr 25

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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title = "Short-step synthesis and chiroptical properties of polyaza[5]-[9]helicenes with blue to green-colour emission",

abstract = "We have developed a two- or three-step synthesis of polyaza[5]-[9]helicenes by consecutive N-H/C-H coupling with a hypervalent iodine reagent. We further evaluated their photophysical properties, and circularly polarized luminescence properties and found that glum values increase with the number of fused rings up to 2.7 × 10-2, which is the highest value among [9]helicenes.",

author = "Takashi Otani and Takuma Sasayama and Chisaki Iwashimizu and Kanyiva, {Kyalo Stephen} and Hidetoshi Kawai and Takanori Shibata",

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AU - Otani, Takashi

AU - Sasayama, Takuma

AU - Iwashimizu, Chisaki

AU - Kanyiva, Kyalo Stephen

AU - Kawai, Hidetoshi

AU - Shibata, Takanori

PY - 2020/4/25

Y1 - 2020/4/25

N2 - We have developed a two- or three-step synthesis of polyaza[5]-[9]helicenes by consecutive N-H/C-H coupling with a hypervalent iodine reagent. We further evaluated their photophysical properties, and circularly polarized luminescence properties and found that glum values increase with the number of fused rings up to 2.7 × 10-2, which is the highest value among [9]helicenes.

AB - We have developed a two- or three-step synthesis of polyaza[5]-[9]helicenes by consecutive N-H/C-H coupling with a hypervalent iodine reagent. We further evaluated their photophysical properties, and circularly polarized luminescence properties and found that glum values increase with the number of fused rings up to 2.7 × 10-2, which is the highest value among [9]helicenes.

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JO - Chemical Communications

JF - Chemical Communications

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ER -

Short-step synthesis and chiroptical properties of polyaza[5]-[9]helicenes with blue to green-colour emission

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