Triple molten porphyrin dimer covalent functionalized single-walled carbon nanotube nonlinear nano hybrid material and preparation method thereof

Abstract

The invention relates to a triple molten porphyrin dimer covalent functionalized single-walled carbon nanotube non-linear nano hybrid material and a preparation method thereof. The non-linear nano hybrid material is formed by connecting a triple molten porphyrin dimer TFP to the surface of SWCNT through covalent bonds. Compared with the prior art, the organic-inorganic covalent functionalized nanofunctional material is prepared by connecting TFP to the surface of SWCNT through covalent bonds and the azo salt free radical addition reaction instead of simply and physically mixing the two different optical functional materials, and compared with a traditional material, the prepared material not only has enhanced nonlinear optical properties in the nanosecond visible light field, but also canconvert saturated absorption of a traditional material into anti-saturated absorption in the femtosecond near-infrared field, and has a very wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic functional composite materials and military strong laser protection materials, and relates to a triple-fused porphyrin dimer covalently functionalized single-wall carbon nanotube nonlinear nano-hybrid material and its preparation. Background technique [0002] Since the invention of strong light sources based on laser principles in 1960, strong laser technology has been widely used in civil, military and scientific fields as an important means of modern high-tech; Nonlinear optics research on intense laser-sensitive materials, especially those sensitive to femtosecond lasers, has attracted great attention. At present, ultrafast femtosecond laser technology has been applied in many fields, such as material diagnosis, biomedicine and microprocessing. However, there are very few femtosecond nonlinear optical functional materials that can be practically applied at present. Therefore, the de...

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Problems solved by technology

The disadvantage is that the RSA of a monomeric porphyrin depends on the ratio of its excited state absorption cross section to its ground state absorption cross section

However, with the increase of the conjugated structure, the solubility of the molecule will gradually decrease. At the same time, the strong oxidizing agent and reducing agent used in the triple melting process largely limit the existence of active groups in the periphery of the molten porphyrin, thus seriously hindering the formation of TFP. Chemical functionalization of carbon-based materials

So far, there have been few studies on introducing TFP into carbon-based or other two-dimensional materials and developing their photophysical properties, let alone systematically studying their nonlinear behavior under femtosecond lasers in the near-infrared region.

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