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Full-color tunable photoluminescent carbon dots based on oil/water interfacial synthesis and their applications

机译：基于油/水界面合成的全色可调光致发光碳点及其应用

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摘要

Herein, we developed a facile method to produce high yield, full-color tunable photoluminescent (PL) carbon dots (CDs) at the oil/water interface. This unique synthesis method for CDs involved the use of the oil-soluble small molecule styrene as both the reactant and oil phase medium at low temperature (60 °C) through a catalytic-oxidation reaction in an aqueous system, which resulted in a high product yield (about 50 wt%). Interestingly, the hydroxy-rich CDs at the oil/water interface self-assembled into nanospheres (N-CDs) spontaneously via hydrogen-bond interactions in the presence of styrene droplets. Without any surface passivation, the N-CDs exhibited self-quenching-resistant and full-color tunable PL properties, which are highly desirable in the optoelectronic field. The mechanism of the formation of N-CDs and their emission is proposed for the first time, which provides insight into the possible chemical processes occurring during the preparation. These distinctive CDs have potential novel applications in PL coatings, smart wearable optoelectronic devices, light emitting diodes, full-color displays, and solar cells.
机译：本文中，我们开发了一种简便的方法来在油/水界面处产生高产率的全色可调光致发光（PL）碳点（CD）。这种独特的CD合成方法涉及在水系中通过催化氧化反应在低温（60°C）下使用油溶性小分子苯乙烯作为反应物和油相介质，从而得到高产量的产品。产率（约50wt％）。有趣的是，在苯乙烯液滴的存在下，油/水界面处的富含羟基的CD通过氢键相互作用自发地自组装成纳米球（N-CD）。在没有任何表面钝化的情况下，N-CD具有抗自猝灭性和全色可调PL特性，这在光电子领域是非常需要的。首次提出了N-CD的形成及其排放的机制，这提供了对制备过程中可能发生的化学过程的了解。这些独特的CD在PL涂层，智能可穿戴光电设备，发光二极管，全彩显示器和太阳能电池中具有潜在的新颖应用。

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