Fluorescent conjugated polymer silicon oxide nanoparticle preparation method and application thereof

Abstract

The invention discloses a fluorescent conjugated polymer silicon oxide nanoparticle preparation method and an application thereof. In the method, the silicon oxide nanoparticle is used as nucleus, decorated with 4-iodo-benzo on the surface, and initiated to perform polymerization to have fluorescent conjugated polymer grafted on the surface. The preparation method comprises the two following steps: firstly, decorating the surface of the silicon oxide nanoparticle with 4-iodobenzene; secondly, initiating aromatic alkynyl benzene and aromatic monomer containing sulfonic acid side chain to perform polymerization on the surface of the silicon oxide nanoparticle to prepare the fluorescent conjugated polymer silicon oxide nanoparticle under the condition of the catalyzing by the organic metallic compound. The nanoparticle can be used to detect the content of TNT in a solution. In the method of the invention, the nanoparticle is introduced into a fluorescence sensor, thus obviously increasing the specific area and improving the contact probability of fluorescent conjugated polymer and TNT to be detected and the fluorescent quenching of conjugate polymer is enlarged, thus improving the detection sensitivity of the sensor and realizing the high sensitivity detection to the explosive TNT.

Description

Preparation method and application of fluorescent conjugated polymer silicon oxide nanoparticles technical field The invention relates to the field of chemical sensing materials, in particular to a preparation method and application of fluorescent conjugated polymer silicon oxide nanoparticles. Background technique In today's society, peaceful development is the common theme of all countries in the world. However, terrorist activities have been rampant in recent years, and using explosives to carry out terrorist attacks is a common method of terrorists, which seriously threatens national security. The research on explosive sensors is not only of great significance to the detection of various explosive weapons on the battlefield, but also has far-reaching significance in the protection of the country and the people's security in a peaceful society, especially in anti-terrorism. There are many kinds of explosives, and most explosives and other dangerous goods contain nitro...

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Problems solved by technology

However, terrorist activities have been rampant in recent years. Using explosives to carry out terrorist attacks is a common method of terrorists, which seriously threatens national security.

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