A facile and green approach for the synthesis of luminescent carbon dots (CDs) was studied using pine pollen as raw material. The as-synthesized CDs exhibited hydrophilic properties and excitation-dependent emission owing to the presence of various ligands in the CDs. The luminescence mechanism of the CDs was studied via ultraviolet–visible (UV–vis) absorption and photoluminescence spectroscopy. Under 354 nm excitation, the CDs showed a maximum emission intensity at 438 nm, which makes it a suitable luminescent material for anti-counterfeiting applications. Based on these results, the development of the CDs through inkjet printing for anti-counterfeiting applications was studied. The printed patterns emitted blue light under UV excitation with a quick dry speed, high resolution, and excellent covertness under daylight. These new fluorescent CDs are promising candidates for luminescent materials used in anti-counterfeiting applications.

以松花粉为原料，研究了一种简便、绿色的发光碳点（CDs）合成方法。由于 CDs 中存在各种配体，合成的 CDs 表现出亲水性和激发依赖性发射。通过紫外-可见（UV-vis）吸收和光致发光光谱研究了CDs的发光机制。在 354 nm 激发下，CDs 在 438 nm 处显示出最大发射强度，这使其成为防伪应用的合适发光材料。基于这些结果，研究了通过喷墨打印的 CD 防伪应用的开发。印刷图案在紫外线激发下发出蓝光，干燥速度快，分辨率高，在日光下具有出色的隐蔽性。