In the laboratory of materials science, silicon-based compounds are undergoing a silent revolution. Phenyl silicone and liquid silicone rubber, as representatives of the organosilicon family, are reshaping the boundaries of industrial applications with their finely tuned molecular structures. The introduction of phenyl groups is not a simple chemical modification, but rather the construction of regularly arranged aromatic microdomains on the surface of silica gel through silanization reaction.

This structure endows silica gel with unique hydrophobicity and selectivity for aromatic compounds. In the field of chromatographic analysis, scientists have found that the surface of silica gel modified with phenyl groups can accurately capture polycyclic aromatic hydrocarbons through π - π interactions, increasing the sensitivity of pollutant detection in environmental monitoring by several times. For example, when detecting benzo [a] pyrene in drinking water, a phenyl silica gel column can reduce the detection limit of trace pollutants to 0.1 nanograms per liter, which is much lower than the performance of traditional C18 chromatography columns.

At the same time, the fluidity and biocompatibility of liquid silicone rubber are opening up a Xintiandi in the medical field. Its low-temperature curing characteristics allow for the 3D printing of complex instruments, from customized artificial organs to minimally invasive surgical catheters, making the interface fusion between flexible electronics and biological tissues unprecedentedly smooth.

Researchers have successfully used liquid silicone rubber to print artificial blood vessels with microfluidic channels, with an inner wall roughness of less than 0.5 microns, significantly reducing the risk of thrombosis. What is even more remarkable is that by adjusting the cross-linking density, this material can simulate the elastic modulus gradient of human tissue, providing an ideal biomechanical environment for cartilage repair scaffolds. This molecular level 'customized chemistry' not only optimizes material properties, but also promotes the deep integration of interdisciplinary research.

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