Fullerenes

Hirsch, Andreas; Brettreich, Michael

doi:10.1002/3527603492

Cited by 572 publications

(374 citation statements)

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“…For the visible region, a sharp peak at 430 nm became apparent for 1c, being characteristic for [6,6]-closed fullerene monoadducts. [23] Furthermore, the MLCT transition was bathochromically shifted to 505 nm compared to those of 3 and 2, due to the π-conjugated system connected to the tpy ligand. When comparing triads 1a-d, an increase in the bridge length, along with an enhanced π-conjugation, resulted in a bathochromic shift of the spacer-unit-based π-π* transitions in the UV region ( Figures S6 and S7).…”

Section: Absorption Spectroscopymentioning

confidence: 98%

Dyads and Triads Based on Phenothiazine, Bis(terpyridine)ruthenium(II) Complexes, and Fullerene

2016

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Abstract:We report the modular synthesis of donor-photosensitizer-bridge-acceptor (D-P-B-A) triads and D-P dyads for the formation of photoinduced charge-separated species. The structures are based on a phenothiazine unit (D), a bis(terpyridine) [bis(tpy)] ruthenium(II) complex (P), several phenylene(ethynylene)-type spacer units (B), and a pyrrolidino[60]fullerene entity (A). The donor-acceptor distance is between 18 and 37 Å and was varied by four different bridging units. The photophysical and electrochemical characterization revealed

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Section: Absorption Spectroscopymentioning

confidence: 98%

Dyads and Triads Based on Phenothiazine, Bis(terpyridine)ruthenium(II) Complexes, and Fullerene

2016

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“…Any application, however, is limited in origin by tedious solidliquid extractions (usually in toluene) and time-expensive chromatographic separations [6][7][8][9][10][11][12][13][14][15] . More recently, the host-guest chemistry of molecular containers has been explored to encapsulate fullerenes 16 .…”

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confidence: 99%

Sponge-like molecular cage for purification of fullerenes

et al. 2014

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Since fullerenes are available in macroscopic quantities from fullerene soot, large efforts have been geared toward designing efficient strategies to obtain highly pure fullerenes, which can be subsequently applied in multiple research fields. Here we present a supramolecular nanocage synthesized by metal-directed self-assembly, which encapsulates fullerenes of different sizes. Direct experimental evidence is provided for the 1:1 encapsulation of C 60 , C 70 , C 76 , C 78 and C 84 , and solid state structures for the host-guest adducts with C 60 and C 70 have been obtained using X-ray synchrotron radiation. Furthermore, we design a washingbased strategy to exclusively extract pure C 60 from a solid sample of cage charged with a mixture of fullerenes. These results showcase an attractive methodology to selectively extract C 60 from fullerene mixtures, providing a platform to design tuned cages for selective extraction of higher fullerenes. The solid-phase fullerene encapsulation and liberation represent a twist in host-guest chemistry for molecular nanocage structures.

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“…Вони є однією з основних причин післяопераційних ускладнень та можуть після гострої артеріальної оклюзії призвести до ампутації кінцівок і навіть смертності [1,2].…”

Section: вступunclassified