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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >1,3,5-Triazine-Based Pt(II) Metallogel Material: Synthesis, Photophysical Properties, and Optical Power-Limiting Performance
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1,3,5-Triazine-Based Pt(II) Metallogel Material: Synthesis, Photophysical Properties, and Optical Power-Limiting Performance

机译：基于1,3,5-三嗪的PT（II）金属凝胶材料：合成，光药性和光学电压性能

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摘要

A new Pt(II) acetylide metallogel material (Pt-1) with 1,3,5-triazine core and 3,4,5-tris(dodecyloxy)benzamide terminal units was synthesized and characterized. Its photo-physical properties were studied by UV-vis absorption, emission, transient absorption, Z-scan, and nonlinear transmission spectroscopy/technique. Pt-1 exhibits ligand-centered n-pi* and (1)pi-pi* transitions in the UV region, and broad, strong absorption bands mixed with intraligand charge transfer ((ILCT)-I-1)/ligand-to-ligand charge transfer ((LLCT)-L-1)/metal-to-ligand charge transfer ((MLCT)-M-1) in the visible spectral region (forward slashes expression indicates that all three processes can be involved, in any proportion). Meanwhile, it shows much stronger triplet transient absorption from the visible to near-infrared region. Thus, the optical power-limiting (OPL) performance of Pt-1 was demonstrated in solution and gel state for a 532 nm nanosecond laser pulse, both of which exhibit a significant decrease of output energy density when the incident light energy increases. In addition, the gel properties of Pt-1 in 15 solvents were studied and a gel sheet with good optical transparency was obtained after cooling the heating sols in dimethylformamide solution. This study can open a new outlet for OPL gelation materials and devices on the basis of the reverse saturable absorption mechanism.
机译：合成和表征了具有1,3,5-三嗪核和3,4,5-三甲基（十二烷氧基）苯甲酰甲酰胺终端单元的新型Pt（ii）乙酰甲符号材料（Pt-1）。通过UV-Vis吸收，发射，瞬态吸收，Z扫描和非线性传输光谱/技术研究了其光学物理性质。 Pt-1表现出紫外线区域的配体中心的N-PI *和（1）PI-PI *过渡，宽，强大的吸收带与intraligand电荷转移（（ILCT）-i-1）/配体 - 配体电荷转移（（L1CT）-1-1）/金属 - 配体电荷转移（（MLCT）-M-1）在可见光谱区域（正斜线表达表明，所有三种过程都可以涉及任何比例）。同时，它显示出从近红外区域可见的更强烈的三态瞬态吸收。因此，在溶液和凝胶状态下对532nm纳秒激光脉冲的溶液和凝胶状态进行了光学功率限制（OPL）性能，两者在入射光能量增加时表现出输出能量密度的显着降低。此外，研究了15溶剂中Pt-1的凝胶性质，并在冷却二甲基甲酰胺溶液中的加热溶胶后获得具有良好光学透明性的凝胶片。本研究可以基于反向可饱和的吸收机制打开OPL凝胶材料和器件的新出口。

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