一种具有有效宽吸收的碳纳米点及其制备方法

Carbon nanodots with effective wide absorption and preparation method thereof

Abstract

本发明提供了一种具有有效宽吸收的碳纳米点的制备方法,包括以下步骤:将尿素与多羧基化合物溶解于高沸点有机溶剂中,在密闭的条件下加热反应,得到具有有效宽吸收的碳纳米点。本发明以尿素与多羧基化合物为原料,并采用高沸点溶剂进行碳纳米点的制备,制备方法简单,制备原料价格低廉。使得到的碳纳米点在整个可见光区具有有效宽吸收峰。另外,本发明制备得到的碳纳米点在水和有机溶剂中具有良好的溶解性,便于溶液加工,并且,所述碳纳米点的结晶性好,有利于开发碳纳米点的光电性能。
The invention provides a preparation method of carbon nanodots with effective wide absorption. The method comprises the following steps: dissolving urea and polycarboxyl compounds in a high-boiling-point organic solvent, and heating under closed conditions to react to obtain the carbon nanodots with effective wide absorption. The carbon nanodots are prepared from the urea and polycarboxyl compounds by using the high-boiling-point solvent; and thus, the preparation method is simple, and the preparation raw materials are cheap. Therefore, the obtained carbon nanodots have effective wide absorption peak in the whole visible light region. In addition, the prepared carbon nanodots have favorable solubility in water and organic solvents, and thus, are convenient for solution processing. Besides, the carbon nanodots have favorable crystallinity, thereby being beneficial to developing photoelectric properties of the carbon nanodots.

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