Photochromic naphthalimide Cd-MOF, preparation method thereof, photochromic printing paste and application

A naphthalimide-based, photochromic technology, applied in the fields of its preparation, photochromic printing paste, and photochromic naphthalimide-based Cd-MOF, can solve the problem of poor fatigue resistance, damage to user comfort, The problem of limited interaction is achieved, and the preparation method is simple, easy to operate, easy to operate, and has broad development prospects.

Active Publication Date: 2020-12-08
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic photochromic materials have the characteristics of sensitive color change and bright color, but the fabric is prone to oxidation and deterioration, poor fatigue resistance, and the price is also high
And it will lead to many problems related to the dyeing process, such as dye degradation, due to low dye uptake and reduced diffusion of dye into the fiber, limited interaction between dye and fiber matrix, inhibition of photochromism generation, limiting photoinduced Application and promotion of color-changing fabric
Although inorganic photochromic materials are not easily affected by the environment, and have good light resistance and fatigue resistance, there is a lack of interaction sites between the inorganic photochromic unit and the fabric, which makes it difficult to combine the color changing unit with the fabric.
Printing techniques or microencapsulation processes are commonly used to process inorganic photochromic units into pigments. Although this method tends to increase the stability of photochromic compounds, it usually imparts a certain roughness and stiffness to the fabric, which impairs the user's Comfort

Method used

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  • Photochromic naphthalimide Cd-MOF, preparation method thereof, photochromic printing paste and application
  • Photochromic naphthalimide Cd-MOF, preparation method thereof, photochromic printing paste and application
  • Photochromic naphthalimide Cd-MOF, preparation method thereof, photochromic printing paste and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 0.1mmol of Cd(NO 3 ) 2 4H 2 O, 0.1 mmol of H 2 NDI and 0.1 mmol H 2 BDC is ultrasonically dissolved in a mixed organic solvent, the mixed organic solvent is a mixed solvent of N,N-dimethylformamide and deionized water, and the volume percentage of N,N-dimethylformamide and deionized water is 2:8 ;

[0034] (2) The above solution was placed in an oven at 120°C for solvothermal reaction for 48 hours to obtain a yellow blocky crystalline material, and then the photochromic naphthalimide-based Cd-MOF was obtained by solid-liquid separation.

[0035] figure 1 It is the crystal structure diagram of the photochromic naphthalimide-based Cd-MOF in Example 1. It can be seen from the single crystal X-ray crystal structure analysis that: Cd-MOF belongs to the triclinic space group P-1, and Cd-MOF does not The symmetric unit is composed of a Cd(II) ion, a H 2 NDI ligand, and a BDC 2- composition. in H 2 In the NDI ligand, only two nitrogen atoms in the 3,5-dimethyl...

Embodiment 2

[0039] (1) Add 0.1mmol of CdSO 4 8 / 3H 2 O, 0.1 mmol of H 2 NDI and 0.1 mmol H 2 BDC is ultrasonically dissolved in a mixed organic solvent, the mixed organic solvent is a mixed solvent of N,N-dimethylformamide and deionized water, and the volume percentage of N,N-dimethylformamide and deionized water is 2:8 ;

[0040] (2) The above solution was placed in an oven at 120°C for solvothermal reaction for 48 hours to obtain a yellow microcrystalline material, and then solid-liquid separation was performed to obtain a photochromic naphthalimide-based Cd-MOF.

[0041] Due to the small size of the microcrystalline material, it is difficult to test its specific structure by an instrument. Therefore, the powder diffraction pattern (XRD) of the microcrystalline material is directly tested by powder X-ray diffraction test, and compared with the XRD pattern of the ligand and metal salt, it is found that the microcrystalline The XRD pattern of the material does not recombine with its li...

Embodiment 3

[0043] (1) 0.1mmol of CdCl 2 ·5 / 2H 2 O, 0.1 mmol of H 2 NDI and 0.1 mmol H 2 BDC is ultrasonically dissolved in a mixed organic solvent, the mixed organic solvent is a mixed solvent of N,N-dimethylformamide and deionized water, and the volume percentage of N,N-dimethylformamide and deionized water is 2:8 ;

[0044] (2) The above solution was placed in an oven at 120° C. for solvothermal reaction for 48 h to obtain a yellow powder material, and then solid-liquid separation was performed to obtain a photochromic naphthalimide-based Cd-MOF.

[0045] Due to the small particle size of the powder material, it is difficult to test its specific structure through the instrument, so the powder diffraction pattern (XRD) is directly measured by powder X-ray diffraction test, and compared with the XRD pattern of the ligand, metal salt and block crystal, It was found that the XRD patterns of the powder material and the ligand were basically consistent, indicating that no coordination re...

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Abstract

The invention discloses a photochromic naphthalimido Cd-MOF, a preparation method thereof, photochromic printing paste and application, and belongs to the field of functional photosensitive fabrics. The molecular formula of the photochromic naphthalimido Cd-MOF is Cd (BDC) (H2NDI). 4H2O, wherein H2NDI is 2, 7-(3, 5-dimethyl- 1H-pyrazole)-1, 4, 5, 8-naphthalene tetracarboxylic diimide, and H2BDC isterephthalic acid. The preparation method disclosed by the invention is simple, feasible and convenient to operate, does not generate toxic gas in the whole process, is green and environment-friendly, conforms to the concept of sustainable development, has no special requirements on equipment, can be used for large-scale production, and has a good and wide development prospect. The photochromic MOFs material is innovatively combined with the traditional textile, so that the characteristics of the textile before and after finishing are kept, the advantages of the MOFs in structure regulation and control can be inherited, and the photochromic behavior and color change of the photosensitive textile are regulated and controlled by utilizing the change of photochromic structure elements.

Description

technical field [0001] The invention belongs to the technical field of textile dyes, and in particular relates to a photochromic naphthalimide-based Cd-MOF, a preparation method thereof, a photochromic printing paste and applications. Background technique [0002] With more and more domestic consumers pursuing high-quality and personalized clothing and increasing requirements for functional textiles, the development of more new photosensitive color-changing materials for fabrics will have broad market application prospects and good prospects. business prospects. [0003] According to the type of photochromic groups combined with textiles, it can be divided into two types: organic photochromic materials and inorganic photochromic materials. Organic photochromic materials have the characteristics of sensitive color change and bright color, but the fabric is easy to oxidize and deteriorate, has poor fatigue resistance, and is also expensive. And it will lead to many problems ...

Claims

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Application Information

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IPC IPC(8): C08G83/00D06P1/52C09K9/02
CPCC08G83/008D06P1/5264C09K9/02C09K2211/188C09K2211/1466
Inventor 李子银陶金林玲周天池
Owner YANCHENG INST OF TECH
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