Issue 40, 2017

High triplet energy electron transport side-chain polystyrenes containing dimesitylboron and tetraphenylsilane for solution processed OLEDs

Abstract

A series of polystyrenes was developed as electron transport materials (ETMs) for solution processed organic light emitting diodes (OLEDs), containing dimesitylboryl (BMes2) and tetraphenylsilanyl in their side-chains. The synthesis and characterisation of the polymers is reported. High triplet energy up to 2.95 eV was obtained for ETMs containing BMes2 and tetraphenylsilanyl. High glass transition temperatures over 180 °C were detected for the series due to the polymer approach, ensuring high thermal stability. The role of both molecular motifs was evaluated in Ir based green OLEDs with all organic layers processed from solution. Similar current efficacies around 30 cd A−1 were measured for the electron-transport polymers, most likely due to the confinement of the LUMO delocalization into the BMes2 unit, leading to similar charge mobility. These results show that incorporation of BMes2 into polymers is an adequate approach for further development of wet-process materials.

Graphical abstract: High triplet energy electron transport side-chain polystyrenes containing dimesitylboron and tetraphenylsilane for solution processed OLEDs

Supplementary files

Article information

Article type
Paper
Submitted
07 Jul 2017
Accepted
03 Oct 2017
First published
03 Oct 2017

J. Mater. Chem. C, 2017,5, 10660-10667

High triplet energy electron transport side-chain polystyrenes containing dimesitylboron and tetraphenylsilane for solution processed OLEDs

A. Lorente, P. Pingel, H. Krüger and S. Janietz, J. Mater. Chem. C, 2017, 5, 10660 DOI: 10.1039/C7TC03029K

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

Spotlight

Advertisements