ol7b03930_si_002.pdf (4.39 MB)
Role of Ring Ortho Substituents on the Configuration of Carotenoid Polyene Chains
journal contribution
posted on 2018-01-10, 12:51 authored by Minsoo Kim, Hyunuk Jung, Albert C. Aragonès, Ismael Díez-Pérez, Kwang-Hyun Ahn, Wook-Jin Chung, Dahye Kim, Sangho KooThe 9-(Z)-configuration
was exclusively obtained
in the carotenoid polyene chain irrespective of olefination and disconnection
methods for terminal ortho-unsubstituted benzene
rings. The 2,6-dimethyl substituents in the terminal rings secure
an all-(E)-polyene structure. The single molecular
conductance of the pure 9-(Z)-carotene was measured
for the first time to be 1.53 × 10–4 ±
6.37 × 10–5G0, whose value was 47%
that of the all-(E)-carotene ((3.23 × 10–4) ± (1.23 × 10–4) G0).