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首页> 外文期刊>Chemistry: A European journal >Formation of a Nonlinear Optical Host-Guest Hybrid Material by Tight Confinement of LDS722 into Aluminophosphate 1D Nanochannels
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Formation of a Nonlinear Optical Host-Guest Hybrid Material by Tight Confinement of LDS722 into Aluminophosphate 1D Nanochannels

机译：通过将LDS722严格限制成磷酸铝一维纳米通道形成非线性光学主宾混合材料

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摘要

In this work, hemicyanine dye LDS722 is encapsulated into the 1D elliptical nanochannels of MgAPO-11 aluminophosphate by a crystallization inclusion method. The synthesis of the hybrid material has been optimized through a systematic variation of the crystallization conditions in order to obtain pure and large crystals (around 20mx30m) suitable for optical applications. The tight fitting between the molecular size of the guest dye and the pore dimensions of the host has favored a rigid planar conformation of the dye, restricting its inherent flexibility, which is confirmed by molecular simulations. Consequently, the encapsulation of LDS722 into MgAPO-11 has led to an astonishing enhancement of the fluorescence with respect to the dye into MgAPO-5, with slightly larger cylindrical channels, and with respect to the dye in solution. Moreover, the perfect alignment of LDS722 (dye with intrinsic nonlinear-optical properties) along the channels of MgAPO-11 has revealed attractive second-order nonlinear properties, such as second harmonic generation, proven through microscopy measurements in single crystals.
机译：在这项工作中，半花菁染料LDS722通过结晶包含方法封装到MgAPO-11铝磷酸盐的1D椭圆纳米通道中。通过系统地改变结晶条件，可以优化杂化材料的合成，以获得适合光学应用的纯净大晶体（约20mx30m）。客体染料的分子大小与主体的孔尺寸之间的紧密配合有利于染料的刚性平面构型，从而限制了其固有的柔韧性，这已通过分子模拟得到证实。因此，将LDS722封装到MgAPO-11中，相对于染料进入MgAPO-5，具有稍大的圆柱状通道，以及相对于溶液中的染料，荧光的惊人增强。此外，LDS722（具有固有非线性光学特性的染料）沿MgAPO-11通道的完美对准已揭示出有吸引力的二阶非线性特性，例如二次谐波的产生，这已通过单晶的显微镜测量得到证明。

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