Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer
Realizing a high luminescence dissymmetry factor (glum) is a paramount yet challenging issue in the research field of circularly polarized luminescence (CPL). Here, we reported a novel set of organic conjugated systems with twisted intramolecular charge transfer (TICT) characteristics based on conju...
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doaj-0df672b2a662473d89e990a1f34fa9ec2020-11-25T02:05:31ZengAmerican Association for the Advancement of ScienceResearch2639-52742020-01-01202010.34133/2020/3839160Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge TransferJunfeng Li0Chenxi Hou1Chao Huang2Shanqi Xu3Xuelei Peng4Qi Qi5Wen-Yong Lai6Wen-Yong Lai7Wei Huang8Wei Huang9Key Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaKey Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaKey Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaKey Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaKey Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaSchool of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,ChinaKey Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaShaanxi Institute of Flexible Electronics (SIFE),Northwestern Polytechnical University (NPU),127 West Youyi Road,Xi’an, 710072 Shaanxi,ChinaKey Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials (IAM),Nanjing University of Posts and Telecommunications,9 Wenyuan Road, Nanjing 210023,ChinaShaanxi Institute of Flexible Electronics (SIFE),Northwestern Polytechnical University (NPU),127 West Youyi Road,Xi’an, 710072 Shaanxi,ChinaRealizing a high luminescence dissymmetry factor (glum) is a paramount yet challenging issue in the research field of circularly polarized luminescence (CPL). Here, we reported a novel set of organic conjugated systems with twisted intramolecular charge transfer (TICT) characteristics based on conjugated o-carborane-binaphthyl dyads composing of binaphthyl units as chiral electron donors and o-carborane units as achiral electron acceptors, demonstrating intense CPL with large glum values. Interestingly, single-crystalline o-1 exhibited a high-level brightness and a large glum factor as high as +0.13, whereas single-crystalline o-2 processed a relatively low brightness with a decreased glum value to -0.04. The significant diversity of CPL-active properties was triggered by the selective introduction of o-carborane units onto the binaphthyl units. Benefiting from the large magnetic dipole transition moments in TICT states, the CPL activity of TICT o-carborane-based materials exhibited amplified circular polarization. This study provides an efficient molecular engineering strategy for the rational design and development of highly efficient CPL-active materials.http://dx.doi.org/10.34133/2020/3839160 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Junfeng Li Chenxi Hou Chao Huang Shanqi Xu Xuelei Peng Qi Qi Wen-Yong Lai Wen-Yong Lai Wei Huang Wei Huang |
spellingShingle |
Junfeng Li Chenxi Hou Chao Huang Shanqi Xu Xuelei Peng Qi Qi Wen-Yong Lai Wen-Yong Lai Wei Huang Wei Huang Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer Research |
author_facet |
Junfeng Li Chenxi Hou Chao Huang Shanqi Xu Xuelei Peng Qi Qi Wen-Yong Lai Wen-Yong Lai Wei Huang Wei Huang |
author_sort |
Junfeng Li |
title |
Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer |
title_short |
Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer |
title_full |
Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer |
title_fullStr |
Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer |
title_full_unstemmed |
Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer |
title_sort |
boosting circularly polarized luminescence of organic conjugated systems via twisted intramolecular charge transfer |
publisher |
American Association for the Advancement of Science |
series |
Research |
issn |
2639-5274 |
publishDate |
2020-01-01 |
description |
Realizing a high luminescence dissymmetry factor (glum) is a paramount yet challenging issue in the research field of circularly polarized luminescence (CPL). Here, we reported a novel set of organic conjugated systems with twisted intramolecular charge transfer (TICT) characteristics based on conjugated o-carborane-binaphthyl dyads composing of binaphthyl units as chiral electron donors and o-carborane units as achiral electron acceptors, demonstrating intense CPL with large glum values. Interestingly, single-crystalline o-1 exhibited a high-level brightness and a large glum factor as high as +0.13, whereas single-crystalline o-2 processed a relatively low brightness with a decreased glum value to -0.04. The significant diversity of CPL-active properties was triggered by the selective introduction of o-carborane units onto the binaphthyl units. Benefiting from the large magnetic dipole transition moments in TICT states, the CPL activity of TICT o-carborane-based materials exhibited amplified circular polarization. This study provides an efficient molecular engineering strategy for the rational design and development of highly efficient CPL-active materials. |
url |
http://dx.doi.org/10.34133/2020/3839160 |
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