Issue 12, 2010

Fluoranthene-based triarylamines as hole-transporting and emitting materials for efficient electroluminescent devices

Abstract

Electroluminescent materials based on the fluoranthene core and containing triarylamine segments were synthesized and characterized by IR, NMR, UV-Vis, and emission spectroscopic, electrochemical, and thermal studies. The electronic absorption and emission characteristics of the new functional materials were affected by the nature of the chromophore present on the fluoranthene nucleus. Incorporation of amine functionality red shifted the absorption and emission profiles significantly, while a marginal bathochromic shift was noticed for the cyano substituent. The redox propensity of the dyes was also altered by the nature of the substituents. The electron donating amino group imparted facile oxidation while the electron-withdrawing cyano unit rendered reduction capability. The decomposition temperatures (Td) observed for the dyes are exceptionally high (406–527 °C). Electroluminescent devices incorporating two amines, N-(4-tert-butylphenyl)-N-(naphthalen-1-yl)-7,8,9,10-tetraphenylfluoranthen-3-amine (7c) and N-phenyl-N-(7,8,9,10-tetraphenylfluoranthen-3-yl)pyren-1-amine (7d) with the configurations ITO/7c or 7d (40 nm)/TPBI or Alq3 (40 nm)/LiF (1 nm)/Al (150 nm) were fabricated and displayed bright greenish yellow emission originating from the dyes.

Graphical abstract: Fluoranthene-based triarylamines as hole-transporting and emitting materials for efficient electroluminescent devices

Supplementary files

Article information

Article type
Paper
Submitted
01 Jun 2010
Accepted
05 Jul 2010
First published
23 Aug 2010

New J. Chem., 2010,34, 2739-2748

Fluoranthene-based triarylamines as hole-transporting and emitting materials for efficient electroluminescent devices

N. Kapoor and K. R. J. Thomas, New J. Chem., 2010, 34, 2739 DOI: 10.1039/C0NJ00415D

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