Ultrafast broadband optical limiting in simple pyrene-based molecules with high transmittance from visible to infrared regions

被引:74
作者
Xiao, Zhengguo [1 ]
Shi, Yufang [2 ]
Sun, Ru [3 ]
Ge, Jianfeng [3 ]
Li, Zhongguo [1 ]
Fang, Yu [3 ]
Wu, Xingzhi [1 ]
Yang, Junyi [3 ]
Zhao, Minggen [2 ]
Song, Yinglin [1 ]
机构
[1] Harbin Inst Technol, Harbin 150001, Peoples R China
[2] Xinzhou Teachers Univ, Xinzhou 034000, Peoples R China
[3] Soochow Univ, Suzhou 215123, Peoples R China
关键词
2-PHOTON ABSORPTION PROPERTIES; EXCITED-STATE ABSORPTION; NONLINEAR ABSORPTION; PUMP-PROBE; POLYMER; PHTHALOCYANINES; SUSPENSIONS;
D O I
10.1039/c5tc04047g
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Pyrene is considered as one of the most promising nonlinear functional building blocks. The nonlinear optical properties of materials can be improved by modifying the main nonlinear group possession ratio occupied in frontier molecular orbitals. Accordingly, we designed and synthesized two isomeric molecules based on pyrene for ultrafast broadband optical limiters. Different pyrene possession ratios occupied in frontier molecular orbitals were calculated through quantum chemical methods between two molecules. The higher average pyrene possession ratio occupied in frontier molecular orbitals exhibited better nonlinear properties in such structures, which was consistent with the experimental data. Excellent optical limiting behaviors were observed under femtosecond laser excitations at multiple wavelengths (range from 515 to 900 nm), which resulted from two-photon absorption (TPA) and TPA induced excited-state absorption (ESA). Moreover, the sample exhibited extremely high transmittance (>91%) from visible to infrared regions (500 to 900 nm). Our results show that pyrene-based derivatives can be considered as promising candidates for broadband ultrafast optical limiters.
引用
收藏
页码:4647 / 4653
页数:7
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