The effect of intermolecular interaction on excited states in p-DTS(FBTTH2)2

Reichenberger, M., Love, J. A., Rudnick, A., Bagnich, S., Panzer, F., Stradomska, A., Bazan, G. C., Nguyen, T.-Q. and Köhler, A. (2016) The effect of intermolecular interaction on excited states in p-DTS(FBTTH2)2. Journal of Chemical Physics, 144(7), 074904. (doi: 10.1063/1.4941700) (PMID:26896999)

Abstract

Using optical spectroscopy in solution and thin film, and supported by quantum chemical calculations, we investigated the aggregation process of the donor-acceptor type molecule p − DTS(FBTTH2)2. We demonstrate that cooling a solution induces a disorder-order phase transition that proceeds in three stages analogous to the steps observed in semi-rigid conjugated polymers. By analyzing the spectra, we are able to identify the spectral signature of monomer and aggregate in absorption and emission. From this we find that in films, the fraction of aggregates is near 100% which is in contrast to films made from semi-rigid conjugated polymers.

• Item Type: Articles
• Additional Information: We gratefully acknowledge support from the Hanns-Seidel-Stiftung through a stipend to MR by funds from the German Federal Ministry of Education and Research (BMBF), support from the German Science Foundation through the Research Training Group GRK 1640 “Photophysics of Synthetic and Biological Multichromophoric Systems“ and from the State of Bavaria through the Research Network “Solar Technologies go Hybrid”. J.A.L, G.C.B, and T.-Q.N thank the Department of the Navy, Office of Naval Research (Award No. N00014-14-1-0580) for the support. T.-Q.N thanks the Camille Dreyfus Teacher Scholar Award.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Stradomska-Szymczak, Dr Anna
• Authors: Reichenberger, M., Love, J. A., Rudnick, A., Bagnich, S., Panzer, F., Stradomska, A., Bazan, G. C., Nguyen, T.-Q., and Köhler, A.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Journal of Chemical Physics
• Publisher: American Institute of Physics
• ISSN: 0021-9606
• ISSN (Online): 1089-7690
• Copyright Holders: Copyright © 2016 American Institute of Physics
• First Published: First published in Journal of Chemical Physics 144(7):074904
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher.