Optical waveguiding and temperature dependent photoluminescence of nanotubulars grown from molecular building blocks

Bidragets oversatte titel: Lysguiging i og temperature afhænig fotoluminescens af nanorør fabrikeret af små organiske molekyler.

Christian Maibohm, Maren Rastedt, Frauke Kutscher, Okko Frey, Ruediger Beckhaus, Horst-Günter Rubahn, Katahrina Al-Shamery

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

Optical waveguiding of blue light after UV-excitation is demonstrated in bundles of organic nanotubulars
obtained via template assisted aggregation of the small p-conjugated non planar molecules 17H-Tetrabenzo[
a,c,g,i]fluorene (17H-Tbf) and 17-Trimethylsilyltetrabenzo[a,c,g,i]fluorene (TMS-Tbf). The propagating
blue light is strongly attenuated due to self-absorption. Vibronic spectra for both nanotubulars
and macroscopic crystallites for temperatures between 5 and 300 K show a behavior of TMS-Tbf that
resembles that of long chained molecules while 17H-TbF resembles that of small organic molecules.
For both molecular species crystallites and nanostructures have large average Huang–Rhys factors
indicating strong phononic coupling promoted by the polycrystallinity of the samples.
Bidragets oversatte titelLysguiging i og temperature afhænig fotoluminescens af nanorør fabrikeret af små organiske molekyler.
OriginalsprogEngelsk
Artikelnummer17
TidsskriftChemical Physics Letters
Vol/bind590
Sider (fra-til)87-91
Antal sider6
ISSN0009-2614
DOI
StatusUdgivet - 18. dec. 2013

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