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A kind of free radical doped coordination polymer and its preparation method and application

A coordination polymer and coordination technology, applied in the field of polymer materials, can solve the problems of weak antibacterial performance and low nanozyme activity, and achieve the effects of enhanced charge transfer, increased charge transfer degree, and excellent photobacterial activity

Active Publication Date: 2022-07-05
PINGXIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned nanozymes use doped carbon dots as active substances and do not contain noble metals, the activity of nanozymes is low and their antibacterial properties are weak

Method used

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  • A kind of free radical doped coordination polymer and its preparation method and application
  • A kind of free radical doped coordination polymer and its preparation method and application
  • A kind of free radical doped coordination polymer and its preparation method and application

Examples

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Effect test

preparation example 1

[0059] A naphthalimide derivative, the structure is as follows:

[0060]

[0061] The preparation method includes the following steps:

[0062]

[0063] 1,4,5,8-Naphthalenetetracarboxylic dianhydride (1.41 g, 5.26 mmol) and taurine (2-aminoethanesulfonic acid, 1.316 g, 10.52 mmol) were heated in 65 mL of dimethylformamide DMF The temperature was kept at an absolute temperature of 423K for about 19 hours; after the reaction solution was cooled to room temperature, a yellow crystalline solid was precipitated, which was filtered and washed to obtain the naphthalimide derivative.

[0064] The nuclear magnetic spectrum of the naphthalimide derivative is as follows figure 1 As shown, the specific chemical shifts are: 1 H-NMR (400 MHz, DMSO-d 6 ): δ8.66 (s, 4H), 4.43-4.18 (m, 4H), 2.95-2.27 (m, 4H).

Embodiment 1

[0066] A free-radically doped coordination polymer comprising a naphthalimide derivative ligand With the calcium ion center, the molar ratio of the ligand to the calcium ion center is 1:1; the coordination polymer also includes coordination water, and the mole ratio of the coordination water to the ligand is 1:1.

[0067] The preparation method is as follows:

[0068] Take 0.1 g (0.2 mmol) of naphthalimide derivative (Preparation Example 1) and 0.05 g (0.2 mmol) of Ca(NO 3 ) 2 In a 20 mL reaction flask, 5 mL of deionized water was added, the temperature was kept at 100° C. for 48 hours, and the temperature was lowered to room temperature to obtain colorless and transparent bulk crystals, that is, a free-radical-doped coordination polymer.

[0069] The free-radical-doped coordination polymer provided in this example was characterized by a single crystal diffraction experiment (Rigaku XtaLAB Synergy microfocus X-ray single crystal diffractometer from Rigaku Corporation), and ...

Embodiment 2

[0071] A free-radically doped coordination polymer comprising a naphthalimide derivative ligand With potassium ion centers, the molar ratio of ligand to potassium ion center is 1:2.

[0072] The preparation method is as follows:

[0073] Take 0.1 g (0.2 mmol) of naphthalimide derivative (Preparation Example 1) and 0.03 g (0.4 mmol) of KNO 3 In a 20 mL reaction flask, 5 mL of deionized water was added, the temperature was kept at 130° C. for 24 hours, and the temperature was lowered to room temperature to obtain colorless and transparent bulk crystals, that is, a free-radical-doped coordination polymer.

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Abstract

The present invention provides a free radical doped coordination polymer, a preparation method and application thereof. The coordination polymer comprises a naphthalimide derivative ligand and a metal ion center, and the naphthalimide derivative has As shown in the structure of formula I, the metal ions are selected from alkali metal ions and / or alkaline earth metal ions. The coordination polymer is obtained by the coordination reaction of a naphthalimide derivative, a metal salt and a solvent, and contains weak interactions such as anion-π and lone pair electron-π, which provide the charge transfer inside the coordination polymer. It is an effective way to generate a large number of free radicals after photoexcitation, with photochromic properties and efficient photobacterial activity. The free-radical-doped coordination polymer provided by the invention has low cost, does not need to add additional bactericidal substances, has a bacterial inhibition rate of 77-99% under light conditions, and can be applied to photochromic materials, antibacterial materials or self-cleaning materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a free-radical-doped coordination polymer and a preparation method and application thereof. Background technique [0002] The more widely used disinfectants in daily life include alcohol and 84 disinfectant. Although these two types of disinfectants have good inhibitory activity against microorganisms such as bacteria and viruses, there are many inconveniences in the use process. For example, when using alcohol with a concentration of 75% for indoor disinfection, the wiping method should be adopted, and spray disinfection should be prohibited; spillage should be avoided during the disinfection process, and indoor ventilation should be maintained to prevent fires. Fireworks must be strictly prohibited when spraying disinfection is adopted outdoors to prevent the local spraying concentration from being too high and burning in case of open flames. 84 Disinfectant has str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K9/02A01N43/90A01N59/00A01P1/00
CPCC08G83/008C09K9/02A01N43/90A01N59/00C09K2211/181Y02A50/30
Inventor 柯华廖建珍
Owner PINGXIANG UNIV
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