Ultra‐High‐Brightness Ln‐MOFs X‐ray Scintillators by Heavy Atoms, Aggregation Effects, and Hydrogen Bonds Restrict Movement
Abstract
ABSTRACT The synergistic effect of the “four‐in‐one” strategy, which includes the heavy atoms effect, coordination‐induced emission (CIE), hydrogen bonds locking effect, and efficient antenna effect, was utilized to significantly enhance the light yield of Tb‐SDB‐MOF X‐ray scintillator. Notably, the efficient heavy atoms effect enhances the X‐ray absorption efficiency of Tb‐SDB‐MOF, synergistically with CIE, hydrogen bonds locking restriction of intramolecular motion (RIM), and an energy‐matched antenna effect, producing a scintillation light yield of 69,575 photons MeV −1 – a leading level among lanthanide complexes based X‐ray scintillators. Meanwhile, the Tb‐SDB‐MOF X‐ray scintillator exhibited an ultra‐low detection limit (20.86 nGy/s), which is 264 times lower than the clinical standard, making it an “ultra‐low dose” lanthanide complexes based X‐ray scintillator. Moreover, low‐concentration formic acid vapor selectively quenched the antenna effect of Tb 3+ ions within Eu 0.08 Tb 0.92 ‐SDB‐MOF, resulting in multistage multicolor luminescence switching from gold→brown→orange→deep‐red→red. The Eu‐SDB‐MOF@Tb‐SDB‐MOF heterostructure facilitates the development of an advanced multi‐functional anti‐counterfeiting system by utilizing the highly efficient multicolor luminescence properties of a single crystal. Finally, this work not only opens new avenues for the development of lanthanide complexes based X‐ray scintillators with ultrahigh light yield but also expands new horizons for the expansion of multifunctional lanthanide complexes.
Article Details
Authors (9)
Wen‐Kang Jiang
Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guangxi Key Laboratory of Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin P. R. China
Ting‐Ting Huang
Guangxi Key Laboratory of Chemistry and Molecular Engineering of Medicinal Resources Key Laboratory For Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin P. R. China
Ru‐Yan Li
School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Electrochemical Energy Materials Guangxi University Nanning P. R. China
Hai‐Ling Wang
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, IGCME, GBRCE For Functional Molecular, Engineering Sun Yat‐Sen University Guangzhou China
Yun‐Lan Li
Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guangxi Key Laboratory of Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin P. R. China
Hua‐Hong Zou
Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guangxi Key Laboratory of Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin P. R. China
Fu‐Pei Liang
Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guangxi Key Laboratory of Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin P. R. China
De‐Xin Chen
School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Electrochemical Energy Materials Guangxi University Nanning P. R. China
Zhong‐Hong Zhu
School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Electrochemical Energy Materials Guangxi University Nanning P. R. China