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Tailoring Electrostatic Attraction Interactions to Activate Persistent Room Temperature Phosphorescence from Doped Polyacrylonitrile Films

preprint
submitted on 07.02.2021, 05:52 and posted on 08.02.2021, 12:05 by Hongzhuo Wu, Deliang Wang, zheng zhao, Dong Wang, Yu Xiong, Ben Zhong Tang

Amorphous organic materials exhibiting room temperature phosphorescence (RTP) are good candidates for optoelectronic and biomedical applications. In this proof-of-concept work, we present a rational strategy to activate persistent RTP with a wide range of color from doped films in which electron-rich organic phosphor as donor while electron-deficient polymer matrix as acceptor through electrostatic attraction interactions. By tailoring electrostatic attraction interactions between the donor and acceptor, an ultralong lifetime of 968.1 ms is achieved for doped film TBB-6OMe@PAN. Control experiments combined with theoretical calculations demonstrate that the electrostatic attraction interactions between organic phosphor and polymer matrix should be responsible for the persistent RTP of doped films. Besides, doped films show reversible thermal response and excellent stability in water, indicating an advantage of electrostatic attraction over hydrogen bond in terms of practical application.

History

Email Address of Submitting Author

xiongyu@ust.com

Institution

Shenzhen University

Country

China

ORCID For Submitting Author

0000-0003-3351-8503

Declaration of Conflict of Interest

No confict of interest

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