Formation of supramolecular polymers by chrysene oligomers

Bösch, Caroline; Häner, Robert (11 September 2014). Formation of supramolecular polymers by chrysene oligomers. In: Swiss Chemical Society Fall Meeting 2014. University of Zurich. 11.09.2014.

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Supramolecular assembly of π-conjugated systems is of large interested due to the possibility to use them in electronic devices.[1] Chrysene is a polyaromatic hydrocarbon which has been studied e.g for organic light-emitting diodes (OLEDs).[2] In continuation of our previous work involving the supramolecular polymerisation of pyrene oligomers [3] an oligomer consisting of three chrysenes linked by phophodiesters was synthesised (Chry3). UV-Vis measurements show that aggregates of Chry3 are formed in aqueous medium. This is illustrated by general hypochromicity, a change in vibronic band intensities and, in particular, the appearance of a red-shifted absorption band in the S0 → S2 transition. The data suggest the formation of J-aggregates. The formation of supramolecular polymers is further studied by temperature-dependent absorption- and fluorescence measurements, and by atomic force microscopy (AFM).

Item Type:

Conference or Workshop Item (Poster)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Bösch, Caroline and Häner, Robert

Subjects:

500 Science > 540 Chemistry

Language:

English

Submitter:

Caroline Bösch

Date Deposited:

23 Oct 2014 17:20

Last Modified:

13 Dec 2014 14:22

BORIS DOI:

10.7892/boris.59499

URI:

https://boris.unibe.ch/id/eprint/59499

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