Ionic manipulation of charge-transfer and photodynamics of [60]fullerene confined in pyrrolo-tetrathiafulvalene cage

Steffen Bähring, Karina R Larsen, Mustafa Supur, Kent A Nielsen, Thomas Poulsen, Kei Ohkubo, Craig W Marlatt, Eigo Miyazaki, Kazuo Takimiya, Amar H Flood, Shunichi Fukuzumi, Jan O Jeppesen

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Abstrakt

A cage molecule incorporating three electron donating monopyrrolotetrathiafulvalene units was synthesised to host electron accepting [60]fullerenes. Formation of a strong 1 : 1 donor-acceptor (D-A) complex C60⊂1 was confirmed by solid state X-ray analysis as well as (1)H NMR and absorption spectroscopic analyses of the arising charge-transfer (CT) band (λ = 735 nm, ε ≈ 840 M(-1) cm(-1)). Inserting Li(+) inside the [60]fullerene increased the binding 28-fold (Ka = 3.7 × 10(6) M(-1)) and a large bathochromic shift of the CT band to the near infrared (NIR) region (λ = 1104 nm, ε ≈ 4800 M(-1) cm(-1)) was observed.

OriginalsprogEngelsk
TidsskriftChemical Communications
Vol/bind53
Udgave nummer71
Sider (fra-til)9898-9901
ISSN1359-7345
DOI
StatusUdgivet - 2017

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