An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli
Abstract Intelligent stimulus–response (S/R) systems are the basis of natural process and machine control, which are intensively explored in biomimetic design and analytical/biological applications. However, nonmonotonic multi‐S/R systems are still rarely studied so far. In this work, a rational des...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-10-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202001845 |
| _version_ | 1818967312318857216 |
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| author | Yujie Tu Yeqing Yu Diwen Xiao Junkai Liu Zheng Zhao Zhiyang Liu Jacky W. Y. Lam Ben Zhong Tang |
| author_facet | Yujie Tu Yeqing Yu Diwen Xiao Junkai Liu Zheng Zhao Zhiyang Liu Jacky W. Y. Lam Ben Zhong Tang |
| author_sort | Yujie Tu |
| collection | DOAJ |
| description | Abstract Intelligent stimulus–response (S/R) systems are the basis of natural process and machine control, which are intensively explored in biomimetic design and analytical/biological applications. However, nonmonotonic multi‐S/R systems are still rarely studied so far. In this work, a rational design strategy is proposed to achieve such a unique S/R system by integrating opposite luminescence behaviors in one molecule. When solvent polarity increases, many heterocyclic or carbonyl‐containing compounds often become more emissive due to the suppression of the proximity effect, whereas molecules with donor–acceptor (D–A) structures tend to be less emissive because of the twisted intramolecular charge transfer. Meanwhile, protonation on D/A moieties will weaken/strengthen the D–A interaction to result in blue/redshifted emissions. By combining a protonatable heterocyclic acceptor and a protonatable donor together in one molecule, nonmonotonic brightness responses to polarity stimuli and nonmonotonic color responses to pH stimuli can be achieved. The design strategy is successfully verified by a simple molecule named 4‐(dimethylamino)styryl)quinoxalin‐2(1H)‐one (ASQ). ASQ exhibits nonmonotonic responses to polarity and pH stimuli, and aggregation‐induced emission (AIE) with a nonmonotonic AIE curve. Meanwhile, ASQ can be adjusted to emit white light in an acidic environment, and it shows multivalent functionalities including albumin protein sensing, ratiometric pH sensing, and amine gas sensing. |
| first_indexed | 2024-12-20T13:46:48Z |
| format | Article |
| id | doaj.art-34c68dc1454a417db0620fa6cb7a334e |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-20T13:46:48Z |
| publishDate | 2020-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-34c68dc1454a417db0620fa6cb7a334e2022-12-21T19:38:37ZengWileyAdvanced Science2198-38442020-10-01720n/an/a10.1002/advs.202001845An Intelligent AIEgen with Nonmonotonic Multiresponses to MultistimuliYujie Tu0Yeqing Yu1Diwen Xiao2Junkai Liu3Zheng Zhao4Zhiyang Liu5Jacky W. Y. Lam6Ben Zhong Tang7Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaDepartment of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong ChinaAbstract Intelligent stimulus–response (S/R) systems are the basis of natural process and machine control, which are intensively explored in biomimetic design and analytical/biological applications. However, nonmonotonic multi‐S/R systems are still rarely studied so far. In this work, a rational design strategy is proposed to achieve such a unique S/R system by integrating opposite luminescence behaviors in one molecule. When solvent polarity increases, many heterocyclic or carbonyl‐containing compounds often become more emissive due to the suppression of the proximity effect, whereas molecules with donor–acceptor (D–A) structures tend to be less emissive because of the twisted intramolecular charge transfer. Meanwhile, protonation on D/A moieties will weaken/strengthen the D–A interaction to result in blue/redshifted emissions. By combining a protonatable heterocyclic acceptor and a protonatable donor together in one molecule, nonmonotonic brightness responses to polarity stimuli and nonmonotonic color responses to pH stimuli can be achieved. The design strategy is successfully verified by a simple molecule named 4‐(dimethylamino)styryl)quinoxalin‐2(1H)‐one (ASQ). ASQ exhibits nonmonotonic responses to polarity and pH stimuli, and aggregation‐induced emission (AIE) with a nonmonotonic AIE curve. Meanwhile, ASQ can be adjusted to emit white light in an acidic environment, and it shows multivalent functionalities including albumin protein sensing, ratiometric pH sensing, and amine gas sensing.https://doi.org/10.1002/advs.202001845aggregation‐induced emissionalbumin sensingamine gas sensingnonmonotonic multistimuli responseswhite‐light emission |
| spellingShingle | Yujie Tu Yeqing Yu Diwen Xiao Junkai Liu Zheng Zhao Zhiyang Liu Jacky W. Y. Lam Ben Zhong Tang An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli Advanced Science aggregation‐induced emission albumin sensing amine gas sensing nonmonotonic multistimuli responses white‐light emission |
| title | An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli |
| title_full | An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli |
| title_fullStr | An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli |
| title_full_unstemmed | An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli |
| title_short | An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli |
| title_sort | intelligent aiegen with nonmonotonic multiresponses to multistimuli |
| topic | aggregation‐induced emission albumin sensing amine gas sensing nonmonotonic multistimuli responses white‐light emission |
| url | https://doi.org/10.1002/advs.202001845 |
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