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Preparation method of ultraviolet light-sensitive calcium-manganese oxide sol and thin film micro-pattern of ultraviolet light-sensitive calcium-manganese oxide sol

A calcium-manganese oxygen sol and ultraviolet photosensitive technology, which is applied in chemical instruments and methods, manganese compounds, inorganic chemistry, etc., to achieve the effects of regular structure, broad application prospects, and stable performance

Active Publication Date: 2019-10-29
XIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation of CaMn by UV-sensitive sol-gel method 7 o 12 The literature and patents of thin-film micro-patterns have not been reported yet

Method used

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  • Preparation method of ultraviolet light-sensitive calcium-manganese oxide sol and thin film micro-pattern of ultraviolet light-sensitive calcium-manganese oxide sol
  • Preparation method of ultraviolet light-sensitive calcium-manganese oxide sol and thin film micro-pattern of ultraviolet light-sensitive calcium-manganese oxide sol

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preparation example Construction

[0026] Concretely, the preparation method of ultraviolet-sensitive calcium manganese oxygen sol comprises the following steps:

[0027] Step 1: Add Ca(NO 3 ) 2 4H 2 O was added to anhydrous methanol, and stirred evenly at room temperature for 5-10 minutes to obtain A solution;

[0028] Mn(CH 3 COO) 2 4H 2 O was added to anhydrous methanol, and stirred at room temperature until it was completely dissolved for 30-40 minutes to obtain solution B;

[0029] Dissolve 2,2'-bipyridine in anhydrous methanol to obtain C solution;

[0030] Step 2: According to the Ca in A solution, B solution and C solution 2+ :Mn 2+ : The molar ratio of 2,2′-bipyridine is 1:7:3.5~7, mix A solution, B solution and C solution evenly, then add acrylic acid, stir at room temperature for 30~40min, add appropriate amount of anhydrous methanol to adjust to total The concentration of metal ions is 0.4-0.6mol / L. After aging, UV-sensitive CaMn 7 o 12 Sol.

[0031] In the present invention, bipyridine ...

Embodiment 1

[0048] Preparation of UV-sensitive CaMn 7 o 12 Sol:

[0049] Step 1: Add Ca(NO 3 ) 2 4H 2 O was added to anhydrous methanol to make Ca 2+ The molar ratio with anhydrous methanol is 1:20, stir at room temperature for 5 minutes to make it evenly mixed to form A solution;

[0050] Mn(CH 3 COO) 2 4H 2 O was added to anhydrous methanol to make Mn 2+ The molar ratio to anhydrous methanol is 1:15, stir at room temperature for 35 minutes to completely dissolve and form B solution;

[0051] The chemical modifier 2,2′-bipyridine was added to anhydrous methanol in an amount of 2,2′-bipyridine and Mn(CH 3 COO) 2 4H 2 The molar ratio of O is 1:1, stir well to get C solution;

[0052] Step 2: The A solution, B solution, and C solution obtained in step 1 are divided into Ca 2+ :Mn 2+ : 2,2′-bipyridine molar ratio is 1:7:7 mixed, add appropriate amount of acrylic acid, acrylic acid and Mn 2+ The molar ratio is 2:1, stirred at room temperature for 30min, and then an appropriate...

Embodiment 2

[0057] Preparation of UV-sensitive CaMn 7 o 12 Sol:

[0058] Step 1: Add Ca(NO 3 ) 2 4H 2 O was added to anhydrous methanol to make Ca 2+ The molar ratio with anhydrous methanol is 1:10, and stirred at room temperature for 10 minutes to make it evenly mixed to form A solution;

[0059] Mn(CH 3 COO) 2 4H 2 O was added to anhydrous methanol to make Mn 2+ The molar ratio to anhydrous methanol is 1:20, stir at room temperature for 30 minutes to completely dissolve to form B solution;

[0060] The chemical modifier 2,2′-bipyridine was added to anhydrous methanol in an amount of 2,2′-bipyridine and Mn(CH 3 COO) 2 4H 2 The molar ratio of O is 0.75:1, stir well to form C solution;

[0061] Step 2: The A solution, B solution, and C solution obtained in step 1 are divided into Ca 2+ :Mn 2+ : 2,2′-bipyridine molar ratio is 1:7:5.25 mixed, add appropriate amount of acrylic acid, acrylic acid and Mn 2+ The molar ratio is 2:1, stirred at room temperature for 40min, and then ...

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Abstract

The invention discloses a preparation method of an ultraviolet light-sensitive calcium-manganese oxide sol and thin film micro-pattern of the ultraviolet light-sensitive calcium-manganese oxide sol. The preparation method comprises the following steps: separately preparing Ca(NO3)2.4H2O, Mn(CH3COO)2.4H2O and 2,2'-bipyridyl into methanol solutions, then mixing the methanol solutions according to aratio, adding acrylic acid, and carrying out volume determining and aging to obtain an ultraviolet light-sensitive CaMn7O12 sol; preparing a sol thin film on a substrate by a dipping pulling method byusing the ultraviolet light-sensitive CaMn7O12 sol, and carrying out drying, exposure, dissolving washing and heat treatment to obtain the CaMn7O12 thin film micro-pattern. The CaMn7O12 is a single-phase multiferroic material and has a strong magnetoelectric coupling effect, and the sol has a strong absorption peak at 298 nm. According to the ultraviolet light-sensitive CaMn7O12 gel thin film obtained through the dipping pulling method, the thickness of the thin film is easy to control, the size is large, the profile is clear, the structure is regular, the thin film is free of pollution, andperformance is stable.

Description

technical field [0001] The invention belongs to the technical field of novel information storage and multifunctional electronic equipment preparation, and specifically relates to an ultraviolet-sensitive calcium-manganese oxygen sol, and also relates to a method for preparing thin-film fine patterns by using the ultraviolet-sensitive calcium-manganese oxygen sol. Background technique [0002] Calcium manganese oxide (CaMn) originating from the perovskite family structure system 7 o 12 ) is a single-phase multiferroic material that is both ferroelectric and ferromagnetic. Because of its high ferroelectric critical temperature (90K), large spontaneous ferroelectric polarization (2870μC / m 2 ), strong intrinsic magnetoelectric coupling effect, and its own special magnetoelectric physical mechanism, making it a hot spot in material science research. CaMn 7 o 12 As a single-phase multiferroic material with strong magnetoelectric effect, it provides great potential for the dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/00
CPCC01G45/00C01P2002/84C01P2004/01
Inventor 王允威赵高扬武传宝段宗范
Owner XIAN UNIV OF TECH
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