Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , 210023 , China.
Applied Chemistry Department, School of Material Science and Engineering , Nanjing University of Aeronautics and Astronautics , Nanjing , 211100 , China.
ACS Appl Mater Interfaces. 2018 Nov 14;10(45):39214-39221. doi: 10.1021/acsami.8b14110. Epub 2018 Oct 31.
A drive for anti-counterfeiting technology has attracted considerable interests in developing nanomaterials with a wide range of colors and tunable optical properties in solid state. Herein, with a series of conjugated polymers and based on the host-guest driven self-assembly strategy, a color-tunable supramolecular nanoparticle-based system is reported, in which full-color as well as white fluorescence can be achieved. Moreover, this fluorescent platform exhibits reversible photoswitching between quenching and emission by noncovalently introducing a photoresponsive energy acceptor. In addition, an efficient chemiluminescence system with high intensity can also be obtained in a similar manner by introducing a HO-responsive energy donor. Significantly, chemiluminescence is advantageous over fluorescence since there is no need for external light irradiation. More importantly, these acceptor/donor-loaded supramolecular nanoparticles exhibit fluorescence/chemiluminescence modulation ability in both solution and solid state. Therefore, this supramolecular system can be employed as fluorescent security inks for anti-counterfeiting strategies and provide a proof-of-principle application.
防伪技术的发展促使人们对具有广泛颜色和可调光学性质的固态纳米材料产生了浓厚的兴趣。在此，我们基于主体-客体驱动的自组装策略，使用一系列共轭聚合物，报道了一种颜色可调的超分子纳米粒子基系统，该系统可以实现全色和白色荧光。此外，通过非共价引入光响应能量受体，该荧光平台可以在猝灭和发射之间实现可逆的光开关。此外，通过类似的方法引入对 HO 响应的能量供体，还可以得到一种具有高强度的高效化学发光系统。值得注意的是，化学发光比荧光更有优势，因为它不需要外部光照射。更重要的是，这些负载有受体/给体的超分子纳米粒子在溶液和固态中都表现出荧光/化学发光调制能力。因此，该超分子体系可作为荧光防伪油墨用于防伪策略，并提供了一个原理验证应用。
