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Chen J, Tan J, Liang P, Wu C, Hou Z, Shen K, Lei B, Hu C, Zhang X, Zhuang J, Sun L, Liu Y, Zheng M. Dynamic Room Temperature Phosphorescence of Silane-Functionalized Carbon Dots Confining within Silica for Anti-Counterfeiting Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306323. [PMID: 38039497 DOI: 10.1002/smll.202306323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/05/2023] [Indexed: 12/03/2023]
Abstract
Room temperature phosphorescent (RTP) materials with long-lived, excitation-dependent, and time-dependent phosphorescence are highly desirable but very hard to achieve. Herein, this work reports a rational strategy of multiple wavelength excitation and time-dependent dynamic RTP color by confining silane-functionalized carbon dots (CDs) in a silica matrix (Si-CDs@SiO2). The Si-CDs@SiO2 possesses unique green-light-excitation and a change in phosphorescence color from yellow to green. A slow-decaying phosphorescence at 500 nm with a lifetime of 1.28 s and a fast-decaying phosphorescence at 580 nm with a lifetime of 0.90 s are observed under 365 nm of irradiation, which originated from multiple surface triplet states of the Si-CDs@SiO2. Given the unique dynamic RTP properties, the Si-CDs@SiO2 are demonstrated for applications in fingerprint recognition and multidimensional dynamic information encryption. These findings will open an avenue to explore dynamic phosphorescent materials and significantly broaden their applications.
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Affiliation(s)
- Junyu Chen
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China
| | - Jieqiang Tan
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China
| | - Ping Liang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Caijuan Wu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Zaili Hou
- Polymer Program, Institute of Materials Science, and Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, Connecticut, 06269, USA
| | - Kuangyu Shen
- Polymer Program, Institute of Materials Science, and Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, Connecticut, 06269, USA
| | - Bingfu Lei
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Chaofan Hu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Xuejie Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Jianle Zhuang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Luyi Sun
- Polymer Program, Institute of Materials Science, and Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, Connecticut, 06269, USA
| | - Yingliang Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Mingtao Zheng
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China
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Yuan H, Ye F, Ai G, Zeng G, Chen L, Shen L, Yang Y, Feng X, Zhang Z, Mi Y. Preparation of an environmentally friendly demulsifier using waste rice husk as raw materials for oil–water emulsion separation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wei Z, Smith AT, Tait WRT, Liu J, Ding H, Wang H, Wang W, Sun L. Lignocellulose aerogel and amorphous silica nanoparticles from rice husks. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2021. [DOI: 10.1186/s42825-020-00044-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Rice Husks (RHs) are one of the most abundant sources of biomass in the world due to rice consumption. Lignocellulose and silica are two of the main components of RHs, which allow RHs to be applied in different areas. Lignocellulose can be partially dissolved in 1-butyl-3-methylimidazolium chloride (BMIMCl), which is a simple way of competing with the traditional extraction methods that suffer from high chemical consumption. A lignocellulose freeze gel is obtained via a cyclic liquid nitrogen freeze-thaw (NFT) process. Multi-functional self-assembled lignocellulose aerogel is obtained after CO2 supercritical drying. Based on the aerogel’s special properties, two routes are developed for practical applications. On one hand, the aerogel is coated to exhibit a superhydrophobic property that can be applied as an absorbent for oil spills. On the other hand, a carbon aerogel is synthesized via a pyrolysis process, resulting in a porous amorphous carbon. The residue after partially dissolving lignocellulose in BMIMCl is further calcined to obtain amorphous silica nanoparticles, achieving a comprehensive application of RHs.
Graphical abstract
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