Naidu Boddu S
Energy and Environment Unit, Institute of Nano Science and Technology (INST), Mohali, Punjab 140306, India; Physics Division, School of Basic Sciences, Galgotias University, Greater Noida, Uttar Pradesh 203201, India.
Energy and Environment Unit, Institute of Nano Science and Technology (INST), Mohali, Punjab 140306, India.
Adv Colloid Interface Sci. 2025 Jul;341:103480. doi: 10.1016/j.cis.2025.103480. Epub 2025 Mar 19.
Counterfeiting has emerged as a new global threat that challenges companies, securities, governments, and customers. Because of the banal advancements in technology, it is extremely prevalent. Ultimately have a more concerning effect than terrorism in terms of the standard of goods, organizations, banks' financial standing, people's health, the nation's financial situation, etc. Thus, it requires an urgent high-tech solution to combat counterfeiting. The present review surveys the anti-counterfeiting technologies that have been applied to combat and discourage counterfeiting. It presents the photoluminescence properties of quantum dots, metal-organic-framework, and lanthanide-doped nanomaterials and their applications in anti-counterfeiting. Recently, lanthanide-doped nanomaterials have emerged as potential candidates that provide strong security for the products due to their excellent color tunable luminescence properties under the wide range (UV to NIR) of excitation. Therefore, the present review mainly focused on the strategies of luminescence features of lanthanide-doped downconversion/downshifting and upconversion nanomaterials and their potential uses in fighting counterfeiting. Moreover, the key barriers and opportunities to combat counterfeiting advances are discussed. In addition, the crucial factors, such as the fabrication of luminescent ink, various printing techniques employed for printing different kinds of fluorescent security labels, patterns, and codes, etc., have been highlighted. This review will provide detailed information to the readers to design the security labels based on the lanthanide-doped luminescent nanomaterials for high-tech security against counterfeiting.
假冒伪劣已成为一种新的全球威胁，对公司、证券、政府和客户构成挑战。由于技术的平庸进步，它极为普遍。最终，在商品标准、组织、银行财务状况、人们的健康、国家财政状况等方面，其影响比恐怖主义更令人担忧。因此，需要一种紧急的高科技解决方案来打击假冒伪劣。本综述调查了已应用于打击和遏制假冒伪劣的防伪技术。它介绍了量子点、金属有机框架和镧系掺杂纳米材料的光致发光特性及其在防伪中的应用。最近，镧系掺杂纳米材料已成为潜在的候选材料，由于其在宽范围（紫外到近红外）激发下具有优异的颜色可调发光特性，可为产品提供强大的安全性。因此，本综述主要关注镧系掺杂下转换/下移和上转换纳米材料的发光特性策略及其在打击假冒伪劣中的潜在用途。此外，还讨论了打击假冒伪劣进展的关键障碍和机遇。此外，还强调了关键因素，如发光油墨的制备、用于印刷不同种类荧光安全标签、图案和代码等的各种印刷技术。本综述将为读者提供详细信息，以便基于镧系掺杂发光纳米材料设计安全标签，实现高科技防伪。
