Junhao Lu, Yingtong Fan, Bingyue Zhou, Zecong Ye, Sen Mei, Dan Zhou, Lanhua Chen, Lixi Chen*, Hanzhou Liu, Huifang Zhu, Xing Dai, Yanlong Wang*, Juan Diwu and Shuao Wang*,
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引用次数: 0
Abstract
Metal–organic frameworks (MOFs) integrating heavy metals and emissive centers have shown great potential as scintillating materials. However, the nonluminescent nature of most MOFs hinders their potential as scintillators. Herein, we propose a general energy-puzzle strategy to convert nonluminous MOFs into efficient scintillators for X-ray detection. By doping a minute quantity of lanthanide (Ln) whose energy level matches that of the linker in the original MOF, the resulting Ln-doped MOF exhibited significantly enhanced X-ray excited luminescence (XEL) performance, boosting an extraordinary improvement exceeding 2 orders of magnitude in terms of limit of detection (LOD). Judicious selection of Ln-dopant with proper energy level enables broad applicability to generally improve the XEL performance of weakly or nonemissive MOFs, among which a rare X-ray-induced near-infrared scintillation was realized. This work broadens the material scope of MOF-based scintillators and facilitates the exploration of efficient MOF-based scintillators for potential radiation detection applications.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.