Synthesis and electroluminescence of novel DSB-segmented copolymers of the PAV/PPV type

Hans-Heinrich Hoerhold; Henning Rost; Annett Teuschel; Willi Kreuder; Hubert Spreitzer

doi:10.1117/12.284171

1 December 1997 Synthesis and electroluminescence of novel DSB-segmented copolymers of the PAV/PPV type

Hans-Heinrich Hoerhold, Henning Rost, Annett Teuschel, Willi Kreuder, Hubert Spreitzer

Proceedings Volume 3148, Organic Light-Emitting Materials and Devices; (1997) https://doi.org/10.1117/12.284171
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

In this paper our recent advances in the development of a novel class of highly efficient DSB-segmented copolymers 1-5 are reported. (-Y-C₆H₄-CH equals CH-C₆H₂(OR)₂-CH equals CH-C₆H₄)_n (1): Y equals NC₆H₅ (2): Y equals O (3): Y equals CO (4): Y equals CHOH (-Y-C₆H₄- CH equals CR'-C₆H₄-CR' equals CH-C₆H₄-)_n (5): Y equals NC₆H₅ R' equals CH₃OC₆H₄. 1,2,3 have successfully been synthesized using the HORNER/WITTIG carbonyl olefination of appropriate dialdehydes which are based on triphenylamine, diphenylether, and diphenylketone. 4 was prepared by polymer analogous carbonyl reduction of 3. This approach resulted in high molecular and soluble materials exhibit green (1,3) and blue (2,3) luminescence with an excellent photoluminescence efficiency. Our goal in this paper is to illustrate the changes in the electrooptical properties that have been caused by segmentation of the polyconjugated PPV backbone into distyrylbenzene (DSB) segments which are connected by mono-atomic Y groups. The chemical character of Y determines significantly the oxidation potentials. Due to its low and reversible oxidation potential 1 shows the most favorable properties for low voltage LED's: green electroluminescence with luminance in the range of 100-500 cd/m² at 7-10 V has been demonstrated. There has also been prepared an electron donating polymer 5 having additional phenyl substituents attached to the vinylenic unit. These phenyl groups are responsible for high glass transition temperature and helped to solubilize the chain.

Citation Download Citation

Hans-Heinrich Hoerhold, Henning Rost, Annett Teuschel, Willi Kreuder, and Hubert Spreitzer "Synthesis and electroluminescence of novel DSB-segmented copolymers of the PAV/PPV type", Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); https://doi.org/10.1117/12.284171

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available