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Precise synthesis and photophysical properties of a small chiral carbon nanotube segment: cyclo[7]paraphenylene-2,6-naphthylene.
- Source :
-
Chemical Communications . 8/18/2019, Vol. 55 Issue 64, p9456-9459. 4p. - Publication Year :
- 2019
-
Abstract
- Herein we report the precise synthesis and photophysical properties of a naphthalene-containing carbon nanohoop, cyclo[7]paraphenylene-2,6-naphthylene ([7]CPPNa2,6), as a sidewall segment of a [9,8] single-walled carbon nanotube ([9,8]SWNT) using a rationally designed strategy. To the best of our knowledge, [7]CPPNa2,6 represents the smallest chiral SWNT segment ever reported. The structure was confirmed by 1H NMR, 2D 1H–1H COSY NMR, 13C NMR, and HR-MS spectrometry. The nanohoop's interesting photophysical properties were investigated by steady-state and time-resolved spectroscopy combined with theoretical calculations. Compared with the [8]CPP and [9]CPP nanohoops, [7]CPPNa2,6 has a moderate strain energy (89.6 kcal mol−1) and a higher HOMO–LUMO gap (3.5 eV). [ABSTRACT FROM AUTHOR]
- Subjects :
- *SINGLE walled carbon nanotubes
*CARBON
Subjects
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 55
- Issue :
- 64
- Database :
- Academic Search Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 137971375
- Full Text :
- https://doi.org/10.1039/c9cc04700j