Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 12, Pages 4756-4762Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915164
Keywords
aggregation coupling engineering; circularly polarized luminescence; logic device; organic ultralong room temperature phosphorescence; stimuli-responsive
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Funding
- National Natural Science Foundation of China [21704042, 21772095, 21604039, 61875090, 91833306, 21674049]
- Six Talent Plan of Jiangsu Province [XCL-049]
- 1311 Talents Program of Nanjing University of Posts and Telecommunications (Dingshan)
- Natural Science Fund for Colleges and Universities in Jiangsu Province [17KJB150017]
- China Postdoctoral Science Foundation [2018M642284]
- Nanjing University of Posts and Telecommunications Start-up Fund (NUPTSF) [NY219007, NY217140]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [46030CX18011]
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Purely organic materials showing room temperature phosphorescence (RTP) and ultralong RTP (OURTP) have recently attracted much attention. However, it is challenging to integrate circularly polarized luminescence (CPL) into RTP/OURTP. Here, we show a strategy to realize CPL-active OURTP (CP-OURTP) by binding an achiral phosphor group directly to the chiral center of an ester chain. Engineering of this flexible chiral chain enables efficient chirality transfer to carbazole aggregates, resulting in strong CP-OURTP with a lifetime of over 0.6 s and dissymmetry factor of 2.3x10(-3) after the conformation regulation upon photo-activation. The realized CP-OURTP is thus stable at room temperature but can be deactivated quickly at 50 degrees C to CP-RTP with high CPL stability during the photo-activation/thermal-deactivation cycles. Based on this extraordinary photo/thermal-responsive and highly reversible CP-OURTP/RTP, a CPL-featured lifetime-encrypted combinational logic device has been successfully established.
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