Fluorescence-enhanced nano-probes and preparation method thereof, and optical microscope imaging method of rock micro-nano pore

A technology of fluorescence enhancement and nanoprobes, which is applied in the fields of fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of low luminous intensity and poor stability, and achieve the effect of strong fluorescence and stable luminescence
CN109765205AInactive Publication Date: 2019-05-17CHENGDU UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU UNIVERSITY OF TECHNOLOGY
Publication Date
2019-05-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses fluorescence-enhanced nano-probes and a preparation method thereof, and an optical microscope imaging method of rock micro-nano pores. Each nano-probe comprises a nano-particle, a silicon dioxide modified layer and fluorochrome; the silicon dioxide modified layer is attached to the surface of the nano-particle; the fluorochrome is bound to the surface of the silicon dioxidemodified layer. The optical microscope imaging method of rock micro-nano pores comprises the following steps: injecting the fluorescence-enhanced nano-probe into cracks and pores of the rock; and performing optical microscope imaging on the pores, filled with the fluorescence-enhanced nano-probes, of the rock. The fluorescence-enhanced nano-probes are injected into the rock, the fluorescence molecules are hard to escape and have obvious color difference from the rock matrix and the cement; the identification on the pores and the throat are extremely favorable under the optical microscope; andthe fluorescence-enhanced nano-probes can be used for a long time without considering the influence of the weakening of the fluorescence along the time, and the pore structure of the rock can be accurately and conveniently reflected for a long time.
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Description

technical field

[0001] The invention relates to the fields of geological resources and geological engineering, in particular to a fluorescence-enhanced nanometer probe, a preparation method thereof, and an optical microscope imaging method for rock micro-nano pores. Background technique

[0002] The characterization of rock pore structure is the basis for the fine description of geological resources, and plays a guiding role in correctly understanding the characteristics of rock reservoirs. At the same time, it plays a decisive role in correctly understanding geological resources and their efficient and rational development. The existing materials that use composite nanoparticles to characterize the rock pore structure are mainly synthesized by coating method. The implementation process is to disperse nanoparticles and dye molecules in tetraethyl silicate (TEOS) solution, and then add absolute ethanol to make them TEOS is decomposed into a substance similar to a network stru...

Claims

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