| 岳劲松,邱汉迅.光聚合法制备碳点发光水凝胶及其性能研究[J].有色金属材料与工程,2024,45(4):51-57. |
| 光聚合法制备碳点发光水凝胶及其性能研究 |
| Preparation and properties of carbon dots luminescent hydrogels by photopolymerization |
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| DOI：10.13258/j.cnki.nmme.20230410001 |
| 中文关键词: 碳点 水凝胶 光聚合 固态发光 |
| 英文关键词:carbon dots hydrogel photopolymerization solid-state luminescence |
| 基金项目:国家自然科学基金资助项目（18ZR1426300） |
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| 摘要点击次数: 1811 |
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| 中文摘要: |
| 以丙烯酰胺（acrylamide，AM）作为聚合物单体，细菌纤维素（bacterial bellulose，BC）作为物理增强网络，黄光碳点（yellow carbon-dots， Y-CDs）作为发光材料，在交联剂和光引发剂的作用下，使用一步光聚合法快速制备了具有黄绿色荧光的聚丙烯酰胺/细菌纤维素/ Y-CDs（polyacrylamide/bacterial cellulose/ Y-CDs，PAM/BC/Y-CDs）发光水凝胶。对水凝胶的形貌、结构、力学性能以及荧光性能进行了表征测试。结果表明：PAM/BC/Y-CDs水凝胶具有出色的力学性能，能够通过自身化学键的断裂对能量进行耗散，使其承受最大约190 kPa的应力并同时具有约1 109%的伸长率，而且具有良好的自恢复性能；在紫外光的激发下PAM/BC/Y-CDs发光水凝胶呈现出明亮且均匀的黄绿色荧光，发射峰位于504 nm处，具有优异的激发无关性。出色的性能使PAM/BC/Y-CDs发光水凝胶在荧光检测、可穿戴设备、荧光标识等领域有巨大的应用潜力。 |
| 英文摘要: |
| Using acrylamide (AM) as polymer monomer, bacterial cellulose (BC) as physical enhancement network, and yellow carbon-dots (Y-CDs) as luminescent material, polyacrylamide/bacterial cellulose/yellow carbon-dots (PAM/BC/Y-CDs) luminous hydrogels with yellow green fluorescence were prepared by one-step photopolymerization under the action of crosslinkers and photoinitiators. The morphology, structure, mechanical properties and fluorescence properties of hydrogels were investigated. The results show that PAM/BC/Y-CDs hydrogels have excellent mechanical properties, which can dissipate energy through the breaking of their own chemical bonds, so that PAM/BC/ Y-CDS hydrogels can withstand the maximum stress of about 190 kPa with about 1 109 % elongation and excellent self-recovery performance. The PAM/BC/Y-CDs hydrogels exhibit bright and uniform yellow-green fluorescence under UV excitation, and the emission peak is located at 504 nm, showing excitation independence. The excellent performance makes PAM/BC/Y-CDs luminescent hydrogel great application potential in fluorescence detection, wearable devices, fluorescent marking and many other fields. |
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