Abstract
We have demonstrated aromaticity reversal in the singlet excited states of internally 1,3-phenylene-strapped [26]- and [28]hexaphyrins (P26H and P28H). P26H displays a broad and reduced singlet-excited-state absorption spectrum, whereas P28H exhibits a sharp and intense singlet-excited-state absorption spectrum; both are in contrast to the ground-state absorption spectra, strongly indicating aromaticity reversal in the singlet excited state. Furthermore, magnetic and topological indices of aromaticity such as nucleus-independent chemical shift and harmonic oscillator model of aromaticity values for P26H and P28H also suggest that their singlet excited states become antiaromatic and aromatic, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 11856-11859 |
| Number of pages | 4 |
| Journal | Journal of the American Chemical Society |
| Volume | 137 |
| Issue number | 37 |
| DOIs | |
| Publication status | Published - 2015 Sep 23 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)
- Biochemistry
- Colloid and Surface Chemistry
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Switching between Aromatic and Antiaromatic 1,3-Phenylene-Strapped [26]- and [28]Hexaphyrins upon Passage to the Singlet Excited State. / Sung, Young Mo; Oh, Juwon; Kim, Woojae; Mori, Hirotaka; Osuka, Atsuhiro; Kim, Dongho.
In: Journal of the American Chemical Society, Vol. 137, No. 37, 23.09.2015, p. 11856-11859.Research output: Contribution to journal › Article
TY - JOUR
T1 - Switching between Aromatic and Antiaromatic 1,3-Phenylene-Strapped [26]- and [28]Hexaphyrins upon Passage to the Singlet Excited State
AU - Sung, Young Mo
AU - Oh, Juwon
AU - Kim, Woojae
AU - Mori, Hirotaka
AU - Osuka, Atsuhiro
AU - Kim, Dongho
PY - 2015/9/23
Y1 - 2015/9/23
N2 - We have demonstrated aromaticity reversal in the singlet excited states of internally 1,3-phenylene-strapped [26]- and [28]hexaphyrins (P26H and P28H). P26H displays a broad and reduced singlet-excited-state absorption spectrum, whereas P28H exhibits a sharp and intense singlet-excited-state absorption spectrum; both are in contrast to the ground-state absorption spectra, strongly indicating aromaticity reversal in the singlet excited state. Furthermore, magnetic and topological indices of aromaticity such as nucleus-independent chemical shift and harmonic oscillator model of aromaticity values for P26H and P28H also suggest that their singlet excited states become antiaromatic and aromatic, respectively.
AB - We have demonstrated aromaticity reversal in the singlet excited states of internally 1,3-phenylene-strapped [26]- and [28]hexaphyrins (P26H and P28H). P26H displays a broad and reduced singlet-excited-state absorption spectrum, whereas P28H exhibits a sharp and intense singlet-excited-state absorption spectrum; both are in contrast to the ground-state absorption spectra, strongly indicating aromaticity reversal in the singlet excited state. Furthermore, magnetic and topological indices of aromaticity such as nucleus-independent chemical shift and harmonic oscillator model of aromaticity values for P26H and P28H also suggest that their singlet excited states become antiaromatic and aromatic, respectively.
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U2 - 10.1021/jacs.5b04047
DO - 10.1021/jacs.5b04047
M3 - Article
AN - SCOPUS:84942274871
VL - 137
SP - 11856
EP - 11859
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 37
ER -