Long-Persistent Circularly Polarized Phosphorescence from Chiral Organic Ionic Crystals

Wenjie Chen; Zimin Tian; Yuangang Li; Yuqian Jiang; Minghua Liu; Pengfei Duan

doi:10.1002/chem.201804342

Long-Persistent Circularly Polarized Phosphorescence from Chiral Organic Ionic Crystals

Chemistry. 2018 Nov 27;24(66):17444-17448. doi: 10.1002/chem.201804342. Epub 2018 Nov 7.

Authors

Wenjie Chen^{1

2

3}, Zimin Tian⁴, Yuangang Li⁴, Yuqian Jiang², Minghua Liu^{1

2

3}, Pengfei Duan^{2

3}

Affiliations

¹ Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, Beijing, 100190, P. R. China.
² CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China.
³ University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
⁴ College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, No. 58, Yanta Road, 710054, Xi'an, P. R. China.

PMID: 30230071
DOI: 10.1002/chem.201804342

Abstract

Long-persistent circularly polarized phosphorescence (LPCPP) is achieved for the first time in chiral organic ionic crystals at room temperature. The co-crystal composed of terephtalic acid (TPA) and chiral α-phenylethyamines (PEAs) gave rise to LPCPP with lifetimes up to 862 ms and large dissymmetric factor (g_lum ). The hybridization of TPA with chiral PEAs allows circular polarization of the generated long-persistent phosphorescence. The observed mirror-image twisted molecular structures in the rigid lattices were responsible for the chiroptical activation of the generated long-persistent phosphorescence.

Keywords: chirality; circularly polarized luminescence; fluorescence; long persistent phosphorescence; organic ionic crystals; photochemistry.

Abstract

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