Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Space Group Modulated Upconversion and Mechanoluminescence in [YbEu] Cocrystal Complexes. |
| Συγγραφείς: |
Sun, Wei1,2 (AUTHOR), Zhang, Qi'an3 (AUTHOR), Fan, Peng1,2 (AUTHOR), Yin, Fan1,2 (AUTHOR), Tian, Chong‐Bin1 (AUTHOR), Tang, Ke‐Han1 (AUTHOR), Guo, Xiao‐Qing1 (AUTHOR), Duan, Xiao‐Fang1 (AUTHOR) duanxiaofang@fjirsm.ac.cn, Peng, Dengfeng3 (AUTHOR) pengdengfeng@szu.edu.cn, Sun, Qing‐Fu1,2 (AUTHOR) qfsun@fjirsm.ac.cn |
| Πηγή: |
Advanced Optical Materials. 4/10/2026, Vol. 14 Issue 14, p1-9. 9p. |
| Θεματικοί όροι: |
*Photon upconversion, *Space groups, *Optical sensors, *Energy transfer, *Luminescence, *Piezoelectric materials, *Rare earth metals |
| Περίληψη: |
Lanthanide complexes exhibiting stimuli‐responsive luminescence, such as upconversion (UC) and mechanoluminescence (ML), are promising for optoelectronics and sensing applications. However, the simultaneous integration of these two properties within a single material remains a challenge, as their emission mechanisms often have different structural requirements. Herein, we report a space group regulation strategy to optimize both UC and ML in cocrystal assemblies. A known mononuclear [Eu] complex crystallizes in the orthorhombic P212121 space group. Influenced by lanthanide contraction, chirality, and doping ratio, homochiral and racemic [YbEu] heterometallic cocrystal systems are constructed, which crystallize in the P21 and P21/c space groups, respectively. The highly symmetric P212121 structure exhibits strong ML but no UC; the centrosymmetric P21/c lattice affords efficient UC yet quenches ML; most remarkably, the noncentrosymmetric polar P21 architecture uniquely supports both remarkable properties. Cooperative sensitization UC upon 980 nm excitation and an 8.4‐fold enhancement in Eu3+‐centered ML compared to the racemic analog, are attributed to an optimal energy transfer pathway and a piezoelectric‐active structure. Furthermore, the ML intensity shows a linear force‐responsiveness (10–50 N) with high sensitivity, highlighting its sensing potential. This work establishes a strategy for designing multifunctional lanthanide‐organic materials. [ABSTRACT FROM AUTHOR] |
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