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A Smart Sensing Method for Object Identification Using Circularly Polarized Luminescence from Coordination‐Driven Self‐Assembly
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- Junpei Yuasa
- Department of Applied Chemistry Tokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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- Yuki Imai
- Department of Applied Chemistry Tokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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- Yuka Nakano
- Graduate School of Materials Science Nara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
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- Tsuyoshi Kawai
- Graduate School of Materials Science Nara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
Bibliographic Information
- Published
- 2018-06-19
- Resource Type
- journal article
- Rights Information
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/ange.201803833
- 10.1002/anie.201803833
- Publisher
- Wiley
Search this article
Description
<jats:title>Abstract</jats:title><jats:p>The potential use of circularly polarized luminescence for object identification in a sensor application is demonstrated. New luminescence probes using pyrene derivatives as sensor luminophores were developed. (R,R)‐Im<jats:sub>2</jats:sub>Py and (S,S)‐Im<jats:sub>2</jats:sub>Py contain two chiral imidazole moieties at 1,6‐positions through ethynyl spacers (angle between spacers ca. 180°). The probe molecules spontaneously self‐assemble into chiral stacks (P or M helicity) upon coordination to metal ions with tetrahedral coordination (Zn<jats:sup>2+</jats:sup>). The chiral probes display neither circular dichroism (CD) nor circularly polarized luminescence (CPL) without metal ions. However, (R,R)‐Im<jats:sub>2</jats:sub>Py and (S,S)‐Im<jats:sub>2</jats:sub>Py exhibit intense chiroptical activity (CD and CPL) upon self‐assembly with Zn<jats:sup>2+</jats:sup> ions. (R,R)‐Im<jats:sub>2</jats:sub>Py and (S,S)‐Im<jats:sub>2</jats:sub>Py with chemical stimuli‐responsibility allow sensing using the CPL signal as detection output, enabling us to discriminate between a signal from the target analyte and that from non‐target species.</jats:p>
Journal
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- Angewandte Chemie
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Angewandte Chemie 130 (29), 9111-9116, 2018-06-19
Wiley
