Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing
Abstract Circularly polarized luminescence (CPL) materials with delayed fluorescence have attracted much attention due to their ability to efficiently trap triplet state excitons, thereby improving the photoluminescence quantum yields of CPL materials. However, much effort has been normally focused...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
|
| Series: | Aggregate |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/agt2.667 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832592361808461824 |
|---|---|
| author | Ke Wang Xinwen Ou Xiaofei Niu Zhenghao Wang Fengyan Song Xiaobin Dong Wu‐jie Guo Hui‐Qing Peng Zujin Zhao Jacky W. Y. Lam Jianwei Sun Hongkai Wu Shu‐Yan Yu Fei Li Ben Zhong Tang |
| author_facet | Ke Wang Xinwen Ou Xiaofei Niu Zhenghao Wang Fengyan Song Xiaobin Dong Wu‐jie Guo Hui‐Qing Peng Zujin Zhao Jacky W. Y. Lam Jianwei Sun Hongkai Wu Shu‐Yan Yu Fei Li Ben Zhong Tang |
| author_sort | Ke Wang |
| collection | DOAJ |
| description | Abstract Circularly polarized luminescence (CPL) materials with delayed fluorescence have attracted much attention due to their ability to efficiently trap triplet state excitons, thereby improving the photoluminescence quantum yields of CPL materials. However, much effort has been normally focused on the utilization of T1 excitons but seldom on the utilization of higher excited triplet state Tn (n > 1) excitons. Rational manipulation of higher excited triplet state Tn (n > 1) excitons and suppression of Kasha's rule of CPL materials remains a major challenge. Herein, two gold complex enantiomers ((R/S)‐BPAuBC) based on axially chiral binaphthyls and 3,6‐Di‐tert‐butylcarbazole groups are synthesized and systematically investigated. These materials exhibit aggregation‐induced circularly polarized delayed fluorescence. Circularly polarized delayed fluorescence was found to be enabled by activating high‐level reverse intersystem crossing (hRISC). The anti‐Kasha phosphorescence at 77 K proves that the exciton has a large population in the high‐lying triplet state T2, which allows the effective hRISC process to cross back to the singlet state S1 and emit delayed fluorescence. In addition, CPL “on–off” switching is further achieved in nanoparticles by acid–base stimulus, showing its potential as an acid–base responsive material. |
| format | Article |
| id | doaj-art-823c85240c444d63aa85c471a228de02 |
| institution | Kabale University |
| issn | 2692-4560 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Aggregate |
| spelling | doaj-art-823c85240c444d63aa85c471a228de022025-01-21T08:57:07ZengWileyAggregate2692-45602025-01-0161n/an/a10.1002/agt2.667Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossingKe Wang0Xinwen Ou1Xiaofei Niu2Zhenghao Wang3Fengyan Song4Xiaobin Dong5Wu‐jie Guo6Hui‐Qing Peng7Zujin Zhao8Jacky W. Y. Lam9Jianwei Sun10Hongkai Wu11Shu‐Yan Yu12Fei Li13Ben Zhong Tang14Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and Separation Department of Chemistry College of Chemistry and Life Science Beijing University of Technology Beijing ChinaDepartment of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaCenter of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and Separation Department of Chemistry College of Chemistry and Life Science Beijing University of Technology Beijing ChinaDepartment of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaCenter of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and Separation Department of Chemistry College of Chemistry and Life Science Beijing University of Technology Beijing ChinaState Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou ChinaState Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing ChinaState Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing ChinaState Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou ChinaDepartment of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaCenter of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and Separation Department of Chemistry College of Chemistry and Life Science Beijing University of Technology Beijing ChinaState Key Laboratory of Natural Medicines College of Engineering China Pharmaceutical University Nanjing ChinaSchool of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong Shenzhen Guangdong ChinaAbstract Circularly polarized luminescence (CPL) materials with delayed fluorescence have attracted much attention due to their ability to efficiently trap triplet state excitons, thereby improving the photoluminescence quantum yields of CPL materials. However, much effort has been normally focused on the utilization of T1 excitons but seldom on the utilization of higher excited triplet state Tn (n > 1) excitons. Rational manipulation of higher excited triplet state Tn (n > 1) excitons and suppression of Kasha's rule of CPL materials remains a major challenge. Herein, two gold complex enantiomers ((R/S)‐BPAuBC) based on axially chiral binaphthyls and 3,6‐Di‐tert‐butylcarbazole groups are synthesized and systematically investigated. These materials exhibit aggregation‐induced circularly polarized delayed fluorescence. Circularly polarized delayed fluorescence was found to be enabled by activating high‐level reverse intersystem crossing (hRISC). The anti‐Kasha phosphorescence at 77 K proves that the exciton has a large population in the high‐lying triplet state T2, which allows the effective hRISC process to cross back to the singlet state S1 and emit delayed fluorescence. In addition, CPL “on–off” switching is further achieved in nanoparticles by acid–base stimulus, showing its potential as an acid–base responsive material.https://doi.org/10.1002/agt2.667aggregation‐induced emissionanti‐Kashacircularly polarized luminescencedelayed fluorescencehigh‐level reverse intersystem crossing |
| spellingShingle | Ke Wang Xinwen Ou Xiaofei Niu Zhenghao Wang Fengyan Song Xiaobin Dong Wu‐jie Guo Hui‐Qing Peng Zujin Zhao Jacky W. Y. Lam Jianwei Sun Hongkai Wu Shu‐Yan Yu Fei Li Ben Zhong Tang Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing Aggregate aggregation‐induced emission anti‐Kasha circularly polarized luminescence delayed fluorescence high‐level reverse intersystem crossing |
| title | Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing |
| title_full | Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing |
| title_fullStr | Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing |
| title_full_unstemmed | Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing |
| title_short | Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing |
| title_sort | aggregation induced circularly polarized luminescence and delayed fluorescence enabled by activating high level reverse intersystem crossing |
| topic | aggregation‐induced emission anti‐Kasha circularly polarized luminescence delayed fluorescence high‐level reverse intersystem crossing |
| url | https://doi.org/10.1002/agt2.667 |
| work_keys_str_mv | AT kewang aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT xinwenou aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT xiaofeiniu aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT zhenghaowang aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT fengyansong aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT xiaobindong aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT wujieguo aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT huiqingpeng aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT zujinzhao aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT jackywylam aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT jianweisun aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT hongkaiwu aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT shuyanyu aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT feili aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing AT benzhongtang aggregationinducedcircularlypolarizedluminescenceanddelayedfluorescenceenabledbyactivatinghighlevelreverseintersystemcrossing |