Fluorescent sensor for magnesium ions and preparation method thereof

A fluorescence sensor, magnesium ion technology, applied in fluorescence/phosphorescence, material excitation analysis, etc., can solve the problem of weak research on thin film fluorescence sensor, improve thermal stability and pH applicable range, not easy to age, maintain optical stability. Effect
CN102053079AInactive Publication Date: 2011-05-11BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2011-05-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fluorescent sensor for magnesium ions, which is made of an organic-inorganic composite material, and a preparation method thereof, and belongs to the technical field of fluorescent sensor preparation. Due to exchangeability of anions among hydrotalcite layers, 1-naphthylamine-3,6,8-trisulfonic acid is inserted among the hydrotalcite layers through an ion exchange method, a film is prepared by an electrochemical deposition method, and the fluorescence response of a film sensor to the magnesium ions is examined. In the prepared fluorescent sensor for the magnesium ions, the hydrotalcite is nontoxic and stable, and has high biocompatibility; different from a polymer carrier, an inorganic laminate of the hydrotalcite is difficult to age and can be stored for a long time so as to keep the optical stability of fluorescent ions and obviously improve the thermal stability of the fluorescent ions; and the sensor has high selectivity for the magnesium ions, shows a linear relationship in a certain range, and has repeated operability.
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Description

technical field

[0001] The invention belongs to the technical field of fluorescence sensor preparation, and in particular provides an organic-inorganic composite material as a magnesium ion fluorescence sensor and a preparation method thereof. Background technique

[0002] Fluorescence sensors have attracted people's attention due to their high sensitivity, rich signal collection and convenient use, and have been developed rapidly in recent years. Fluorescence sensors are mainly divided into two categories, namely, homogeneous fluorescence sensors used in solution and thin-film fluorescence sensors that are easily reusable and capable of gas-phase sensing. In recent years, research on thin-film fluorescence sensors has received special attention.

[0003] Borrowing the principle of homogeneous fluorescent chemical sensors, designing and preparing thin-film fluorescent sensors is an effective way to push fluorescent sensors to practical applications or expand their applicati...

Claims

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