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Excitation‐Dependent Long‐Life Luminescent Polymeric Systems under Ambient Conditions

Yan SuSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaYongfeng ZhangSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaZhonghao WangSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaWeichen GaoSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaPeng JiaSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaDan ZhangSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaChaolong YangDivision of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 SingaporeYoubing LiSchool of Materials Science and Engineering Chongqing University of Technology Chongqing 400054 P. R. ChinaYanli ZhaoDivision of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore

2019en

ABI

Annotatsiya

Organic room temperature luminescent materials present a unique phosphorescence emission with a long lifetime. However, many of these materials only emit single blue or green color in spite of external stimulation, and their color tunability is limited. Herein, we report a rational design to extend the emission color range from blue to red by controlling the doping of simple pyrene derivatives into a robust polymer matrix. The integration of these pyrene molecules into the polymer films enhances the intersystem crossing pathway, decreases the first triplet level of the system, and ensures the films show a sensitive response to excitation energy, finally yielding excitation-dependent long-life luminescent polymeric systems under ambient conditions. These materials were used to construct anti-counterfeiting patterns with multicolor interconversion, presenting a promising application potential in the field of information security.

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Identifikatorlar

DOI: 10.1002/anie.201912102

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