Large‐Scale One‐Step Synthesis of Carbon Dots from Yeast Extract Powder and Construction of Carbon Dots/PVA Fluorescent Shape Memory Material,Advanced Optical Materials

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Large‐Scale One‐Step Synthesis of Carbon Dots from Yeast Extract Powder and Construction of Carbon Dots/PVA Fluorescent Shape Memory Material
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-02-07 , DOI: 10.1002/adom.201701150
Shuangshuang Wu ₁ , Wei Li ₁ , Wan Zhou ₁ , Yan Zhan ₁ , Chaofan Hu ₁ , Jianle Zhuang ₁ , Haoran Zhang ₁ , Xuejie Zhang ₁ , Bingfu Lei ₁ , Yingliang Liu ₁

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Fluorescent carbon dots (CDs) have drawn lots of attention for their excellent properties and broad applications. However, rarely hydrothermal methods of preparation have been investigated and reach a high synthetic yield of CDs, which limits their scale‐up production. In this work, a large‐scale one‐step process is shown to prepare CDs from yeast extract powder (called y‐CDs) for the first time and the yield of CDs can reach up to 65.8%. The optical properties and morphology of the y‐CDs are characterized. On account of good water solubility and high yield of y‐CDs, the application of the reprepared y‐CDs/polyvinyl alcohol (PVA) as fluorescent shape memory material is explored. It turns out that the reprepared y‐CDs/PVA not only exhibits bright blue luminescence under 365 nm UV light excitation, but also possesses shape memory behavior, which is superior to pure PVA. The interaction between y‐CDs and PVA is explained and a water‐responsive shape memory mechanism of the y‐CDs/PVA composite films is introduced.

中文翻译：

酵母提取粉大规模一步合成碳点及碳点/ PVA荧光形状记忆材料的构建

荧光碳点（CD）由于其出色的性能和广泛的应用而备受关注。但是，很少研究水热制备方法，并且CD的合成产率很高，这限制了CD的大规模生产。在这项工作中，展示了一个大规模的一步过程，这是首次从酵母提取物粉末（称为y-CD）中制备CD，CD的产率可以达到65.8％。表征了y-CD的光学性质和形态。由于良好的水溶性和y-CD的高收率，探索了将重新制备的y-CD /聚乙烯醇（PVA）用作荧光形状记忆材料的应用。事实证明，重新制备的y-CD / PVA不仅在365 nm紫外光激发下表现出亮蓝色发光，而且还具有形状记忆行为，优于纯PVA。解释了y-CD和PVA之间的相互作用，并介绍了y-CD / PVA复合膜的水响应形状记忆机制。

更新日期：2018-02-07

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