岑丝丝,刘丽,陈彤,陆旭,段慧琳,徐长妍.柠檬酸碳点荧光油墨的制备及其荧光性能[J].包装工程,2021,42(21):98-104.
CEN Si-si,LIU Li,CHEN Tong,LU Xu,DUAN Hui-lin,XU Chang-yan.Preparation and Fluorescent Properties of Citric Acid Carbon Dot Fluorescent Ink[J].Packaging Engineering,2021,42(21):98-104. |
| 柠檬酸碳点荧光油墨的制备及其荧光性能 |
| Preparation and Fluorescent Properties of Citric Acid Carbon Dot Fluorescent Ink |
| 投稿时间：2020-12-31 |
| DOI：10.19554/j.cnki.1001-3563.2021.21.014 |
| 中文关键词: 碳点 荧光油墨 激发波长依赖性 防伪包装 |
| 英文关键词: carbon dot fluorescent ink excitation wavelength dependence anti-counterfeiting packaging |
| 基金项目:国家自然科学基金(32071703) |
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| 中文摘要: |
| 目的 以柠檬酸碳点为荧光色料，制备水性碳点荧光油墨，为其进一步应用于防伪包装和荧光生物传感器提供参考。方法 首先以柠檬酸为碳源，采用高温热解法制备碳点，然后以所制备的碳点作为荧光色料，以乙醇溶液为连接料，以羧甲基纤维素钠为粘合剂和稳定剂，以聚乙烯吡咯烷酮溶液为表面活性剂，制备水性碳点荧光油墨。结果 高倍透射电镜扫描显示，所得碳点结构规整，具有球形形貌;粒径分布范围为1.2~1.8 nm，且在水溶液中无明显聚集，分布均匀。另外，所制备的碳点在365 nm紫外光激发下发出蓝色光，且其荧光发射光谱表现出明显的激发波长依赖性。基于上述碳点的水性荧光油墨在可见光下呈棕黄色，对普通打印纸表现出良好的润湿性。结论 制备出的荧光油墨具有荧光性能，其荧光发射波长不随激发波长的变化而变化，且油墨对普通打印纸具有良好的润湿性能。该研究结果对生物质碳点荧光油墨在生物传感器和防伪包装等方面的应用具有一定的参考价值。 |
| 英文摘要: |
| The work aims to prepare water-based carbon dot fluorescent ink with citric acid carbon dots (CDs) as the fluorescent, so as to provide reference for the further application of such ink in anti-counterfeiting packaging and fluorescent biosensor. Firstly, CDs were prepared by high temperature pyrolysis with citric acid as the carbon source. Then, the as-prepared CDs were used as the fluorescent pigment, ethanol solution as the connecting material, sodium carboxymethyl cellulose as the binder and stabilizer, and polyvinylpyrrolidone solution as the surfactant to prepare water-based carbon dot fluorescent ink. High power transmission electron microscopy (TEM) scanning showed that the structure of the prepared CDs was regular and spherical, the particle size was 1.2-1.8 nm, and there was no obvious aggregation in aqueous solution, demonstrating that the distribution of the CDs in water was uniform. Besides, the as-prepared CDs emitted blue light when excited by 365 nm UV, and the fluorescence emission spectrum presented obvious excitation wavelength dependence. Based on the above-mentioned CDs, the water-based fluorescent ink was brown-yellow under visible light and showed good wettability to ordinary printing paper. The as-prepared fluorescent ink has fluorescence property, with fluorescence emission wavelength not changing with the excitation wavelength and shows good wettability to ordinary printing paper. The research results have a certain reference value for the application of biogenic carbon dots-based fluorescent ink in biosensors and anti-counterfeiting. |
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