Developing security inks with spectral outputs/multiple colors, which have unique identification characteristics, is of great importance in enhancing the anti-counterfeiting strength of ink anti-counterfeiting technology. Herein, a print-driven triple-bond coding mode is proposed for the first time. Two kinds of triple-bond-containing polymeric nanoparticles (NPs) with Raman shifts at 2227 and 2241 cm⁻¹ have been designed into printable ink, and the decimal coding output can be easily obtained by reasonably adjusting the proportions of the two polymeric NPs. Single Raman scattering inks can be used as invisible inks to print monochromatic patterns and words that the decoder can read out. According to the two-dimensional pixels of the graphics decoder, invisible colorful graphics can be printed with mixed inks under different polymer proportions. More interestingly, three-dimensional invisible patterns with stronger anti-counterfeiting strength can also be obtained in the double-layer anti-counterfeiting patterns with different proportions of ink by the spatial complementary coding mode. It is predicted that more security inks associated with triple-bond Raman signals will spur the application of the anti-counterfeiting field.

中文翻译：

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基于含三键聚合物纳米粒子的拉曼墨水用于安全

开发具有独特识别特性的光谱输出/多种颜色的安全油墨，对于提高油墨防伪技术的防伪强度具有重要意义。在此，首次提出了一种打印驱动的三键编码模式。两种在 2227 和 2241 cm ^{-1处具有拉曼位移的含三键聚合物纳米粒子 (NPs)}已被设计成可打印的墨水，通过合理调整两种聚合物纳米粒子的比例，可以很容易地获得十进制编码输出。单色拉曼散射墨水可以作为隐形墨水打印解码器可以读出的单色图案和文字。根据图形解码器的二维像素，可以用不同聚合物比例的混合油墨打印出看不见的彩色图形。更有趣的是，通过空间互补编码方式，在不同墨水比例的双层防伪图案中，还可以得到防伪力度更强的三维隐形图案。预计更多与三键拉曼信号相关的安全墨水将刺激防伪领域的应用。