材料科学
四苯基卟啉
谱线
卟啉
吸收光谱法
分子物理学
Z扫描技术
吸收(声学)
波长
光学
克尔效应
单晶
Crystal(编程语言)
作者
Zhen Li,Yali Hu,Tingbin Li
标识
DOI:10.1080/15421406.2014.884403
摘要
Tetraphenylporphyrin (TPP) and its nickel(II) (NiTPP) complex have been synthesized, their crystal structures have been determined by means of X-ray single crystal diffraction. The TPP possesses good planarity in the porphyrin core, while in the complex the planarity disappeared. The central nickel(II) ion coordinates with four nitrogen atoms, which constructed a distorted square environment. Their third-order nonlinear optical properties have been studied using Z-scan technique at wavelength 532 nm and 1064 nm in picosecond (ps) domain. At 532 nm nonlinear absorption were observed, TPP shows two-photon absorption (TPA) combined with saturable absorption (SA), while NiTPP shows SA. At 1064 nm nonlinear refraction were observed, the molecular second hyperpolarizability γ of the NiTPP was about 1.4 times larger than that of the TPP.
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