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Phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film and preparation method thereof

A polyoxometalate and third-order nonlinear technology, which is applied in chemical instruments and methods, synthetic resin layered products, and layered products, can solve the problems of difficult control of film thickness, complicated equipment, and high cost, and achieve cost-effectiveness. The effect of rich film material, compact packing and high stability

Inactive Publication Date: 2014-08-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing methods for preparing nonlinear optical films, such as spin coating, pulling, and LB, have disadvantages such as complex equipment, high cost, difficult operation, and difficult control of film thickness. Layer-by-layer self-assembly (LBL) is a simple and easy The preparation method of the ordered film of operation is widely used, but the limitation is that this method is only applied to aqueous solution at present. Therefore, the application of LBL method is extended to non-aqueous solvents and the preparation of phthalocyanine films with excellent third-order nonlinear optical properties is a very challenging subject

Method used

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  • Phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film and preparation method thereof
  • Phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film and preparation method thereof
  • Phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) prepare the aqueous solution of polyallylamine hydrochloride and NaCl, the concentration of polyallylamine hydrochloride is 1.0 * 10 -2 mol / L, the NaCl concentration is 1M, and the pH is adjusted to 2.5 with hydrochloric acid; the prepared concentration is 1.0×10 -2 mol / L sodium polystyrene sulfonate aqueous solution; the preparation concentration is 1.0×10 -3 mol / L DMF (N,N-dimethylformamide) solution of 2,9,16,23-tetraaminocopper phthalocyanine; the preparation concentration is 1.0×10 -3 mol / L of H 5 PMo 10 V 2 o 40 Aqueous solution, adjust pH=2.5 with hydrochloric acid;

[0026] (2) Put the processed quartz sheet into the aqueous solution of polyallylamine hydrochloride and NaCl, soak for 20min, take it out, wash it with deionized water and dry it with nitrogen;

[0027] (3) Then soak the quartz sheet in an aqueous solution of sodium polystyrene sulfonate for 20 minutes, take it out, wash it with deionized water and blow it dry with nitrogen; then put it in...

Embodiment 2

[0036] (1) prepare the aqueous solution of polyallylamine hydrochloride and NaCl, the concentration of polyallylamine hydrochloride is 1.0 * 10 -2 mol / L, the concentration of NaCl is 1M, adjust the pH=1 with hydrochloric acid; the prepared concentration is 1.0×10 -2 mol / L sodium polystyrene sulfonate aqueous solution; the preparation concentration is 1.0×10 -3 mol / L DMF (N,N-dimethylformamide) solution of 2,9,16,23-tetraaminocopper phthalocyanine; the preparation concentration is 1.0×10 -3 mol / L of H 3 PMo 12 o 40 Aqueous solution, adjust pH=1 with hydrochloric acid;

[0037] (2) Put the treated monocrystalline silicon chip into the aqueous solution of polyallylamine hydrochloride and NaCl, soak for 20min, take it out, wash it with deionized water and dry it with nitrogen;

[0038] (3) Soak the monocrystalline silicon wafer in an aqueous solution of sodium polystyrene sulfonate for 20 minutes, take it out, wash it with deionized water and dry it with nitrogen; then soak i...

Embodiment 3

[0045] (1) prepare the aqueous solution of polyallylamine hydrochloride and NaCl, the concentration of polyallylamine hydrochloride is 1.0 * 10 -3 mol / L, the concentration of NaCl is 1M, adjust the pH=5 with hydrochloric acid; the prepared concentration is 1.0×10 -3 mol / L sodium polystyrene sulfonate aqueous solution; the preparation concentration is 1.0×10 -4 mol / L DMF solution of 2,9,16,23-tetraaminocopper phthalocyanine; the preparation concentration is 1.0×10 -2 mol / L of H 3 PW 12 o 40 Aqueous solution, adjust pH=5 with hydrochloric acid;

[0046] (2) Put the treated non-woven fabric into the aqueous solution of polyallylamine hydrochloride and NaCl, soak for 10min, take it out, wash it with deionized water and dry it with nitrogen;

[0047] (3) Then soak the substrate in an aqueous solution of sodium polystyrene sulfonate for 30 minutes, take it out, wash it with deionized water and blow it dry with nitrogen; then soak it in an aqueous solution of polyallylamine hydr...

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Abstract

The invention discloses a phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film and a preparation method of the phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film and belongs to the technical field of preparation of function materials. The self-assembled film has third-order nonlinear optical properties including self-defocusing and saturated absorption under a nanosecond laser condition and comprises a substrate, a precursor film and an alternative deposition layer from bottom to top, wherein the precursor film is formed by the alternating deposition of polyallylamine hydrochloride layers and polystyrene sulfonate layers, the bottommost layer of the precursor film is the polystyrene sulfonate layer and is connected with the substrate, and the uppermost layer of the precursor film is the polystyrene sulfonate layer and is connected with the alternative deposition layer; the alternative deposition layer is formed by the alternating deposition of a polyoxometallate layer and a phthalocyanine layer, and the bottommost layer of the alternative deposition layer is the polyoxometallate layer. According to the preparation method, the phthalocyanine-polyoxometallate third-order nonlinear optical self-assembled film is obtained by carrying out alternative assembling in a non-aqueous solvent by virtue of a layer-by layer-self-assembly method and has high stability and the excellent nonlinear optical properties.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a phthalocyanine and polyoxometalate self-assembled film with self-defocusing and saturated absorption third-order nonlinear optical properties under nanosecond laser conditions and a preparation method thereof. Background technique [0002] The research and development of nonlinear optical materials has important practical significance for nonlinear optical phenomena and theoretical research, and greatly affects optical information processing, optical communication, data storage, short-wave pulse generation, all-optical switching, and optical limiting. Amplitude, spatial light modulation and other high-tech development. Inorganic crystals are the earliest studied nonlinear optical materials, and have been used in the development of devices, but their long response time, difficult preparation process, single types of options, and easy deliq...

Claims

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Application Information

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IPC IPC(8): B32B27/30C03C17/42C04B41/52D06M13/21D06M15/356D06M11/13D06M15/233D06M11/70D06M13/352
Inventor 周云山屈宁宁张立娟史宗海
Owner BEIJING UNIV OF CHEM TECH
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