Matches in SemOpenAlex for { <https://semopenalex.org/work/W2168051623> ?p ?o ?g. }
- W2168051623 endingPage "402" @default.
- W2168051623 startingPage "395" @default.
- W2168051623 abstract "Fully conjugated π-expanded macrocyclic oligothiophenes with 60π–180π electron systems have been synthesized using modified McMurry coupling reaction as a key step. X-ray analyses of 60π and 72π systems revealed unique molecular and packing structures, reflecting planar cyclic structures with large inner cavities. All giant macrocycles exhibit multi-step reversible redox behavior with fairly low first oxidation potentials, reflecting their cyclic conjugation. Doping of macrocycles with iodine forms semiconductors owing to their π-donor properties and π–π stacking ability. Interestingly, 90π and 120π systems self-aggregate in the solid state to form red nanofibers. The structures of fibrous aggregates have been established by SEM and AFM analyses. Furthermore, two-photon properties of 72π, 108π, 144π, and 180π systems show that the increasing π-conjugation leads to an increase in the two-photon absorption cross-section with magnitudes as high as 100,000 GM in the visible spectral region." @default.
- W2168051623 created "2016-06-24" @default.
- W2168051623 creator A5006114858 @default.
- W2168051623 date "2009-03-01" @default.
- W2168051623 modified "2023-09-26" @default.
- W2168051623 title "Giant macrocycles composed of thiophene, acetylene, and ethylene units" @default.
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- W2168051623 doi "https://doi.org/10.1016/j.crci.2008.10.005" @default.
- W2168051623 hasPublicationYear "2009" @default.