Jump to main content
Jump to site search
SCHEDULED MAINTENANCE Close the message box

Maintenance work is planned for Monday 16 August 2021 from 07:00 to 23:59 (BST).

Website performance may be temporarily affected and you may not be able to access some PDFs or images. If this does happen, refreshing your web browser should resolve the issue. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 4, 2018

Solvent-mediated aggregate formation of PNDIT2: decreasing the available conformational subspace by introducing locally highly ordered domains

Author affiliations

Abstract

The high-mobility n-type donor/acceptor polymer PNDIT2 is well-known to form aggregates in solution depending on the solvent used. To gain additional insight into this process, we probed the local environment of triplet excitons in two different solvents and with two different polymer chain lengths using time-resolved electron paramagnetic resonance (TREPR) spectroscopy. Results clearly show aggregation to introduce a high degree of local order in the polymer and to dramatically enhance the delocalisation of the exciton. Furthermore, triplet exciton delocalisation is only affected by the solvent used and hence by aggregate formation, not by chain length. Finally, aggregation changes the mode of delocalisation from intrachain to interchain when forming aggregates, the latter mode dominating as well in thin films. Taken together, TREPR proves to be a valuable tool for investigating aggregation and order in polymers on a molecular length-scale, ideally complementing preceding optical data.

Graphical abstract: Solvent-mediated aggregate formation of PNDIT2: decreasing the available conformational subspace by introducing locally highly ordered domains

Supplementary files

Article information


Submitted
16 Nov 2017
Accepted
19 Dec 2017
First published
20 Dec 2017

Phys. Chem. Chem. Phys., 2018,20, 2716-2723
Article type
Paper

Solvent-mediated aggregate formation of PNDIT2: decreasing the available conformational subspace by introducing locally highly ordered domains

D. L. Meyer, R. Matsidik, S. Huettner, M. Sommer and T. Biskup, Phys. Chem. Chem. Phys., 2018, 20, 2716 DOI: 10.1039/C7CP07725D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements