近红外稀土荧光在功能材料领域的研究进展

稀土近红外荧光材料具有特征发射峰尖锐、光稳定性好和毒性低等特点.近年来,稀土近红外荧光材料在光纤通讯、激光系统、生物分析传感器及生物成像等方面的应用价值日渐突显,引起了研究者们的极大关注.特别是稀土近红外荧光材料已发展成一种新兴的荧光标记材料,并有希望替代有机染料和量子点应用于生物分析和医学成像.基于稀土近红外发光的荧...

Near-Infrared Lanthanide Luminescence for Functional Materials

Near-infrared (NIR) luminescent lanthanide materials are attractive due to their unique optical and chemical features, such as characteristic sharp luminescence, good photostability and low toxicity. Recently, startling interests for NIR luminescent lanthanide materials have been attracted for their highlighted value in the applications of fiber-optic communications, laser systems, bio-sensing and bio-imaging analysis, etc. NIR luminescent lanthanide materials have been developed as a new class of luminescent optical labels that have become promising alternatives to organic fluorophores and quantum dots for applications in biological assays and medical imaging. These lanthanide luminescent probes offer low autofluorescence background, large Stokes shifts, high resistance to photobleaching, high penetration depth and temporal resolution; such techniques also show potential for improving the selectivity and sensitivity of detecting methods. Different kinds of luminescent materials fabricated by lanthanides (upconversion nanocrystals, mesoporous materials, micelles, lanthanide metal-organic framework, ionic liquids and ionogels) exhibit various NIR luminescent properties, which are attributed to the distinct mechanisms of sensitisation. However, the sensitisation of NIR luminescence remains a real challenge. By summarizing the latest developments in the field of NIR lanthanide luminescent materials in this review, we show distinct design ideas on the NIR lanthanide luminescence, describe various NIR luminescent lanthanide functional materials, and evaluate the features and advantages of near-infrared luminescent materials for the developing trends in the future.