Combining Functional Units to Design Organic Materials with Dynamic Room-Temperature Phosphorescence under Continuous Ultraviolet Irradiation

Meng Liu; Zhiqiang Yang; Zhe Feng; Ningyuan Zhao; Ruihua Bian; Jinpu Wu; Qing Yang; Shuaiqiang Zhao; Haichao Liu; Bing Yang

doi:10.3390/molecules29112621

Molecules (Jun 2024)

Combining Functional Units to Design Organic Materials with Dynamic Room-Temperature Phosphorescence under Continuous Ultraviolet Irradiation

Meng Liu,
Zhiqiang Yang,
Zhe Feng,
Ningyuan Zhao,
Ruihua Bian,
Jinpu Wu,
Qing Yang,
Shuaiqiang Zhao,
Haichao Liu,
Bing Yang

Affiliations

Meng Liu: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
Zhiqiang Yang: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
Zhe Feng: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
Ningyuan Zhao: College of Chemistry, Jilin University, Changchun 130012, China
Ruihua Bian: College of Chemistry, Jilin University, Changchun 130012, China
Jinpu Wu: College of Chemistry, Jilin University, Changchun 130012, China
Qing Yang: State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
Shuaiqiang Zhao: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
Haichao Liu: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
Bing Yang: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China

DOI: https://doi.org/10.3390/molecules29112621
Journal volume & issue: Vol. 29, no. 11
p. 2621

Abstract

Read online

Developing materials with dynamic room-temperature phosphorescence (RTP) properties is crucial for expanding the applications of organic light-emitting materials. In this study, we designed and synthesized two novel RTP molecules by combining functional units, incorporating the folded unit thianthrene into the classic luminescent cores thioxanthone or anthraquinone to construct TASO and TA2O. In this combination, the TA unit contributes to the enhancement of spin–orbit coupling (SOC), while the luminescent core governs the triplet energy level. After the strategic manipulation of SOC using the thianthrene unit, the target molecules exhibited a remarkable enhancement in RTP performance. This strategy led to the successful development of TASO and TA2O molecules with outstanding dynamic RTP properties when exposed to continuous ultraviolet irradiation, a result that can be ascribed to their efficient RTP, improved absorption ability, and oxygen-sensitive RTP properties. Leveraging the oxygen-mediated ultraviolet-radiation-induced RTP enhancement in TASO-doped polymer films, we developed a novel time-resolved detection technique for identifying phase separation in polymers with varying oxygen permeability. This research offers a promising approach for constructing materials with dynamic RTP properties.

Published in Molecules

ISSN: 1420-3049 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/molecules

About the journal

Abstract

Keywords