Organic-Lanthanide Nanoparticle Hybrids for Efficient Photon Absorption and Emission

用于高效光子吸收和发射的有机稀土纳米颗粒混合物

• 批准号: EP/X023133/1
• 负责人: Zhongzheng Yu
• 金额: $ 24.26万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX023133%2F1
• 关键词: Organic; Lanthanide; Nanoparticle; Hybrids; Efficient

Lanthanide-doped nanoparticles (LnNPs) show great potential in a broad range of applications, including fluorescent microscopy, deep-tissue theranostics, optogenetics, sensing and anticounterfeiting, due to their unique optical properties. Classically, there are two major limitations of LnNPs - weak absorption and low photoluminescence quantum yield (PLQY), typically <5%. Combining molecular chromophores with LnNPs to form organic-lanthanide nanoparticle hybrids could overcome these issues and enable superior light absorption and fluorescent performance for LnNPs and hence expand their use to optoelectronic applications, including light emission and photon frequency-conversion, and photocatalysis. "Hybrid-Ln-Light" will combine the recent breakthroughs in the host group on the energy transfer and manipulation of triplet excitons with LnNPs and the fellow's material chemistry knowledge and experience with synthesis and characterization of high-brightness LnNPs, to develop new architectures for LnNPs with high PLQYs to combine with molecular chromophores while maintaining efficient triplet energy transfer. The key underlying scientific advance will be to understand and gain control over the interface between the molecular chromophores and the LnNPs. This will enable a new generation of hybrid materials with wide ranging applications in optoelectronics.

由于其独特的光学性质，稀土掺杂纳米颗粒（LnNPs）在荧光显微镜、深层组织治疗诊断学、光遗传学、传感和防伪等广泛应用中显示出巨大的潜力。通常，LnNP存在两个主要限制-弱吸收和低光致发光量子产率（PLQY），通常<5%。将分子发色团与LnNP组合以形成有机-镧系纳米颗粒混合物可以克服这些问题，并且使得LnNP能够具有上级光吸收和荧光性能，因此将它们的用途扩展到光电应用，包括光发射和光子频率转换，以及光致发光。“Hybrid-Ln-Light”项目将联合收割机结合主体组在三重态激子与LnNP的能量转移和操纵方面的最新突破，以及研究员在高亮度LnNP合成和表征方面的材料化学知识和经验，开发具有高PLQY的LnNP的新架构，以与分子发色团联合收割机结合，同时保持有效的三重态能量转移。关键的潜在科学进步将是理解和控制分子发色团和LnNP之间的界面。这将使新一代的杂化材料在光电子学中具有广泛的应用。