期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 14, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202116563
关键词
Aluminum; Molecular Rings; Nonlinear Absorption; Optical Limiting
资金
- National Natural Science Foundation of China [92061104, 21771181, 21935010]
- Natural Science Foundation of Fujian Province [2021J06035, 2020J01896]
- Youth Innovation Promotion Association CAS [2017345]
In this study, the effects of functional ligand and ring size regulation on the structures and third-order nonlinear optical properties of crystalline cluster materials were demonstrated. The results showed that the third-order NLO performances are not only determined by general conjugate interactions, but also related to hydrogen bonding, polarizability, and ring sizes.
Crystalline cluster materials, a class of functional motif aggregations, provide a great opportunity for tuning the properties stemming from the flexible and accurate variation of inorganic and organic compositions. In this study, we demonstrate the effects of functional ligand and ring size regulation on the structures and third-order nonlinear optical (NLO) properties. Revealed by the single-crystal X-ray analysis results, aluminum molecular ring expansion is achieved by 2 x 9 and 3 x 6 strategies. In terms of the given organic shells, we further tuned the aluminum molecular ring sizes from 3.0 nm to 1.7 nm. The picosecond Z-scan measurements results revealed that the third-order NLO performances do not only depend on the general conjugate interactions but are also related to hydrogen bonding, polarizability, and ring sizes. The large nonlinear absorption coefficient and onset prove that the observed samples are promising candidates for the field of nonlinear optics.
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