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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >A comparative photophysicochemical study of phthalocyanines encapsulated in core-shell silica nanoparticles
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A comparative photophysicochemical study of phthalocyanines encapsulated in core-shell silica nanoparticles

机译：核壳二氧化硅纳米颗粒中酞菁的比较光物理化学研究

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摘要

This work presents the synthesis and characterization of a new zinc phthalocyanine complex tetrasubstituted with 3-carboxyphenoxy in the peripheral position. The photophysical properties of the new complex are compared with those of phthalocyanines tetra substituted with 3-carboxyphenoxy or 4-carboxyphenoxy at non-peripheral positions. Three phthalocyanine complexes were encapsulated within silica matrix to form a core shell and the hybrid nanoparticles particles obtained were spherical and mono dispersed. When encapsulated within the silica shell nanoparticles, phthalocyanines showed improved triplet quantum yields and singlet oxygen quantum yields than surface grafted derivatives. The improvements observed could be attributed to the protection provided for the phthalocyanine complexes by the silica matrix. (c) 2014 Elsevier B.V. All rights reserved.
机译：这项工作提出了在外围位置被3-羧基苯氧基四取代的新型锌酞菁锌配合物的合成和表征。将新配合物的光物理性质与在非外围位置被3-羧基苯氧基或4-羧基苯氧基四取代的酞菁的光物理性质进行了比较。将三种酞菁配合物包封在二氧化硅基质中以形成核壳，并且获得的杂化纳米颗粒为球形且单分散。当被封装在二氧化硅壳纳米颗粒中时，酞菁显示出比表面接枝衍生物更高的三重态量子产率和单重态氧量子产率。观察到的改善可以归因于二氧化硅基质对酞菁配合物的保护作用。 （c）2014 Elsevier B.V.保留所有权利。

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