Highly Efficient Multiphoton Absorption of Zn-AIEgen Frameworks
Highly Efficient Multiphoton Absorption of Zn-AIEgen Frameworks
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Zn-AIEgen 框架的高效多光子吸收
DOI：
10.1002/anie.202115205
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发表时间：
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通讯作者：
Jianzhuang Jiang
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作者：
Naifang Liu;Zhihui Chen;Wenxuan Fan;Jie Su;Tingting Lin;Si Xiao;Jianqiao Meng;Jun He;Jagadese J. Vittal;Jianzhuang Jiang
通过聚合诱导发射(AIE)-连接剂四-(4-羧基苯基)乙烯(H4TCPE)与锌离子的选择性结合，合成了一系列发光骨架。络合物1由锌-三氯环己烷铰链紧密堆积而成，同结构络合物2-5由锌-三氯环己烷层与柱状配体连接而成。这些配合物表现出高效的多光子激发光致发光(MEPL)和伴随的三次谐波(THG)。1的多光子吸收参数优于包括钙钛矿纳米晶在内的其他多光子发射材料。立柱连接物的加入减缓了锌-三氯乙烯层间的电荷转移，而立柱连接物的芳香族核对相应骨架的抗压强度有很大影响。
A series of luminescent frameworks was synthesized from the selective combination of aggregation induced emission (AIE)‐linker tetra‐(4‐carboxylphenyl)ethylene (H4TCPE) and Zn2+. Complex1was formed by the close packing of Zn‐TCPE hinge, and isostructural complexes2–5were constructed by the linkage of Zn‐TCPE layer and pillar ligands. These complexes exhibit highly efficient multiphoton excited photoluminescence (MEPL) and concomitant third‐harmonic generation (THG). The multiphoton absorption (MPA) parameters of1are superior to other multiphoton emission materials including the perovskite nanocrystals. The incorporation of pillar linkers slows down the charge transfer between layers of Zn‐TCPE, and the aromatic core of pillar linkers has a great influence on the MPA performance of the corresponding frameworks.