Thermosensitive Microgels Containing AIEgens : Enhanced Luminescence and Distinctive Photochromism for Dynamic Anticounterfeiting
The proposal of the aggregation-induced emission (AIE) effect shines a light on the practical application of luminescent materials. The AIE-active luminescence microgels (TPEC MGs) with photo-induced color-changing behavior were developed by integrating positively charged AIE luminogens (AIEgens) into the anionic network of microgels, where AIEgens of TPEC were obtained from the quaternization reaction between tetra-(4-pyridylphenyl)ethylene (TPE-4Py) and 7-(6-bromohexyloxy)-coumarin. The aqueous suspensions of TPEC MGs exhibit a significant AIE effect following the enhancement of quantum yield. In addition, further increase in fluorescence intensity and blueshift occur at elevated temperatures due to the collapse of microgels. The distinctive photochromic behavior of TPEC MGs was observed, which presents as the transition from orange-yellow to blue-green color under UV irradiation, which is different from TPEC in good organic solvents. The phenomenon of color changing can be ascribed to the competition between photodimerization of the coumarin part and photocyclization of TPE-4Py in TPEC. The photochromic TPEC MG aqueous suspensions can be conducted as aqueous microgel inks for information display, encryption, and dynamic anticounterfeiting.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:14 |
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| Enthalten in: |
ACS applied materials & interfaces - 14(2022), 15 vom: 20. Apr., Seite 17794-17805 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Dong, Shunni [VerfasserIn] |
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| Links: |
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| Themen: |
AIE-active fluorescence |
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| Anmerkungen: |
Date Revised 20.04.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.2c01620 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM339336811 |
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| 500 | |a Date Revised 20.04.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a The proposal of the aggregation-induced emission (AIE) effect shines a light on the practical application of luminescent materials. The AIE-active luminescence microgels (TPEC MGs) with photo-induced color-changing behavior were developed by integrating positively charged AIE luminogens (AIEgens) into the anionic network of microgels, where AIEgens of TPEC were obtained from the quaternization reaction between tetra-(4-pyridylphenyl)ethylene (TPE-4Py) and 7-(6-bromohexyloxy)-coumarin. The aqueous suspensions of TPEC MGs exhibit a significant AIE effect following the enhancement of quantum yield. In addition, further increase in fluorescence intensity and blueshift occur at elevated temperatures due to the collapse of microgels. The distinctive photochromic behavior of TPEC MGs was observed, which presents as the transition from orange-yellow to blue-green color under UV irradiation, which is different from TPEC in good organic solvents. The phenomenon of color changing can be ascribed to the competition between photodimerization of the coumarin part and photocyclization of TPE-4Py in TPEC. The photochromic TPEC MG aqueous suspensions can be conducted as aqueous microgel inks for information display, encryption, and dynamic anticounterfeiting | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a AIE-active fluorescence | |
| 650 | 4 | |a anticounterfeiting | |
| 650 | 4 | |a microgels | |
| 650 | 4 | |a photochromism | |
| 650 | 4 | |a thermosensitivity | |
| 700 | 1 | |a Zang, Qiguang |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Zhao-Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Meiqi |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Zhi-Kang |e verfasserin |4 aut | |
| 700 | 1 | |a Nie, Jingjing |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Binyang |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Jing Zhi |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Ben Zhong |e verfasserin |4 aut | |
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