Long-lived-correlated triplet-pair state in an imide substituted poly-thienylene vinylene-based π-conjugated polymer

Evan Lafalce; Uyen Huynh; Ella Olejnik; Tek P. Basel; Eitan Ehrenfreund; Zeev Valy Vardeny; Xiaomei Jiang

doi:10.1117/1.JPE.8.032217

6 June 2018 Long-lived-correlated triplet-pair state in an imide substituted poly-thienylene vinylene-based π-conjugated polymer

Evan Lafalce, Uyen Huynh, Ella Olejnik, Tek P. Basel, Eitan Ehrenfreund, Zeev Valy Vardeny, Xiaomei Jiang

Author Affiliations +

Journal of Photonics for Energy, Vol. 8, Issue 3, 032217 (June 2018). https://doi.org/10.1117/1.JPE.8.032217

Abstract

We report on the photophysical properties of a soluble thienylene-vinylene π-conjugated polymer, namely imide poly-thienylene vinylene. Ultrafast pump probe spectroscopy reveals that a broad photoinduced absorption (PA) band is immediately photogenerated along with a narrower PA from the photoinduced singlet excitons. The broad PA is susceptible to magnetic field and thus is assigned to a correlated triple pair state. This feature shows a long lifetime persisting into the μs time domain, in contrast to the singlet exciton PA, which quickly decays on a 10-ps timescale. The steady-state PA spectrum is identical to the transient PA spectrum of the triplet pair state but shows a magnetic field response that is typical to isolated triplet excitons.

Citation Download Citation

Evan Lafalce, Uyen Huynh, Ella Olejnik, Tek P. Basel, Eitan Ehrenfreund, Zeev Valy Vardeny, and Xiaomei Jiang "Long-lived-correlated triplet-pair state in an imide substituted poly-thienylene vinylene-based π-conjugated polymer," Journal of Photonics for Energy 8(3), 032217 (6 June 2018). https://doi.org/10.1117/1.JPE.8.032217

Received: 22 February 2018; Accepted: 22 May 2018; Published: 6 June 2018

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