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Nano-assembly and optical properties of difluoroboron dibenzoylmethane-polysilane
Polymer ( IF 4.6 ) Pub Date : 2021-09-14 , DOI: 10.1016/j.polymer.2021.124188
Liviu Săcărescu 1 , Corneliu Cojocaru 1 , Gheorghe Roman 1 , Gabriela Săcărescu 1 , Mihaela Simionescu 1 , Petrişor Samoilă 1 , Andreea Laura Chibac-Scutaru 2
Affiliation  

Aggregation of various fluorophores is a useful approach to build highly sensitive and selective fluorescent sensors. In this work, the ability of oligomeric polydiphenylsilanes to associate with fluorescent low molecular weight organic compound is illustrated by the formation of stable aggregates between poly[diphenyl-co-methyl(H)]silane and dibenzoylmethanatoboron difluoride in solution. The formation of these nano-structures in solution was investigated both experimentally using gel permeation chromatography, σ spectroscopy and fluorescence spectroscopy, and theoretically by molecular modeling. Thin films obtained from this solution have a characteristic morphology in which the nano-aggregates undergo a self-organizing process and form crystalline spherulites. Association between the fluorescent polysilane and the fluorescent diketonato boron complex proceeds with an increase of fluorescence (amplification efficiency up to 90%) through a FRET mechanism as a result of aggregation, a phenomenon that could be used in the development of fluorescent sensors.



中文翻译:

二氟硼二苯甲酰甲烷-聚硅烷的纳米组装和光学性能

各种荧光团的聚合是构建高灵敏度和选择性荧光传感器的有用方法。在这项工作中,低聚聚二苯基硅烷与荧光低分子量有机化合物结合的能力通过聚[二苯基-共-甲基(H)]硅烷和二苯甲酰基甲烷二氟化硼在溶液中形成稳定的聚集体来说明。这些纳米结构在溶液中的形成通过凝胶渗透色谱、σ光谱和荧光光谱进行了实验研究,并通过分子建模进行了理论上的研究。从该溶液中获得的薄膜具有特征形态,其中纳米聚集体经历自组织过程并形成结晶球晶。

更新日期:2021-09-15
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