Long-wavelength chromophores with thermally activated delayed fluorescence based on fluorescein derivatives

Jing An; Yingnan Wu; Meiheng Lu; Ke-Li Han; Fengling Song; Xiaojun Peng

doi:10.1117/1.JPE.8.032103

8 February 2018 Long-wavelength chromophores with thermally activated delayed fluorescence based on fluorescein derivatives

Jing An, Yingnan Wu, Meiheng Lu, Ke-Li Han, Fengling Song, Xiaojun Peng

Author Affiliations +

Journal of Photonics for Energy, Vol. 8, Issue 3, 032103 (February 2018). https://doi.org/10.1117/1.JPE.8.032103

Abstract

Long-wavelength chromophores are developed based on fluorescein derivatives by introducing a strong acceptor 2-(3-cyano-4,5,5-trimethylfuran-2(5H)-ylidene) malononitrile (TFM). By changing the number of TFM, we obtained two chromophores, which are named DTFM-DCF and STFM-DCF, respectively. Due to the large, rigid π-conjugated structure and strong electron-withdrawing capability of TFM, the maximum emission wavelengths of these molecules span from 681 to 755 nm in dichloromethane. Meanwhile, these two chromophores, which exhibit the property of thermally activated delayed fluorescence, have long-lived luminescence with 9.02 μs for STFM-DCF and 0.43 μs for DTFM-DCF in deaerated dichloromethane at room temperature.

Citation Download Citation

Jing An, Yingnan Wu, Meiheng Lu, Ke-Li Han, Fengling Song, and Xiaojun Peng "Long-wavelength chromophores with thermally activated delayed fluorescence based on fluorescein derivatives," Journal of Photonics for Energy 8(3), 032103 (8 February 2018). https://doi.org/10.1117/1.JPE.8.032103

Received: 30 October 2017; Accepted: 11 January 2018; Published: 8 February 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