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A kind of photoinduced nonlinear expansion coordination polymer and preparation method thereof

A coordination polymer, nonlinear technology, applied in the field of photosensitive materials, to achieve the effects of high volume control accuracy, high reaction conversion rate and mild reaction conditions

Active Publication Date: 2022-07-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Examples of thermal expansion are currently reported in materials such as zeolites, metal cyanides, and coordination polymers (see: Burtch, N.C., S.J. Baxter, J. Heinen, A. Bird, A. Schneemann, D. Dubbeldam, A.P. Wilkinson, Adv. .Funct.Mater,2019,29,1904669.) However, there are few reports on materials whose expansion is controlled by light

Method used

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  • A kind of photoinduced nonlinear expansion coordination polymer and preparation method thereof
  • A kind of photoinduced nonlinear expansion coordination polymer and preparation method thereof
  • A kind of photoinduced nonlinear expansion coordination polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1: Coordination polymer [Zn(iba)(tkpvb)Cl] n1 preparation

[0052] Zinc nitrate hexahydrate (297 mg, 0.1 mmol), 1,2,4,5-tetrakis((E)-2-(4-pyridyl)vinyl)benzene (490 mg, 0.1 mmol) and p-iodobenzoic acid ( 248mg, 0.1mmol) mixture was added to a 25mL thick-walled pressure bottle, and then 10mL of a mixed solvent of N,N-dimethylformamide and deionized water with a volume ratio of 2:3 was added, and the system was adjusted with 0.1M hydrochloric acid. The pH is around 5. Tighten the bottle cap, ultrasonically disperse for 10 minutes, place it in an oven with a programmed temperature of 120 °C for 8 hours, and naturally cool to room temperature to obtain bright yellow bulk crystals [Zn(iba)(tkpvb)Cl] n1 (Zn-1). After washing with ethanol, the crystals were collected and dried in an oven at 60°C, yield: 462.8 mg (65%, based on 1,2,4,5-tetrakis((E)-2-(4-pyridyl)vinyl)benzene calculate).

[0053] Elemental analysis (%): C 41 H 31 ClN 4 O 2 Zn; theoretical: C 69....

Embodiment 2

[0059] Example 2: Coordination polymer [Zn(iba)(poly-bpbpvpcb)Cl] n3 Preparation of (Zn-2a)

[0060] At room temperature, take a small amount of Zn-1 crystal on a clean glass slide, and keep the distance between the light source and the crystal at 2cm, and irradiate it with a 365nm wavelength LED lamp for 30 minutes to obtain 100% converted [2+2] Cycloaddition product [Zn(iba)(poly-bpbpvpcb)Cl] n3 (Zn-2a).

[0061] Elemental analysis (%): C 41 H 31 ClN 4 O 2 Zn; theoretical value: C 69.11, H 4.39, N 7.86; found value: C 69.1H4.23N 7.94

[0062] Infrared spectrum (potassium bromide tablet method): 3440(w), 3066(w), 2938(w), 2359(w), 1938(w), 1824(w), 1640(s), 1504(m) ,1393(s),1223(w),1032(m),919(w),881(m),821(s),745(s),688(m),546(s)cm -1 .

[0063] The product was tested by single crystal X-ray diffraction. Its crystallographic parameters are shown in Table 2, and the single crystal structure diagram is shown in the appendix Figure 5 .

Embodiment 3

[0064] Example 3: Coordination polymer [Zn(iba)(poly-bpbpvpcb)Cl] n3 Preparation of (Zn-2b)

[0065] At room temperature, take a small amount of Zn-1 crystal on a clean glass slide, and keep the distance between the light source and the crystal at 2cm, and irradiate it with a 385nm wavelength LED light for 30 minutes to obtain 100% converted [2+2] Cycloaddition product [Zn(iba)(poly-bpbpvpcb)Cl] n3 (Zn-2b).

[0066] Elemental analysis (%): C 41 H 31 ClN 4 O 2 Zn; theoretical: C 69.11, H 4.39, N 7.86; found: C69.18, H 4.37, N 7.88.

[0067] The product was tested by single crystal X-ray diffraction, and its crystallographic parameters are shown in Table 2.

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Abstract

The invention belongs to the technical field of photosensitive materials, in particular to a photo-induced nonlinear expansion coordination polymer and a preparation method thereof. The coordination polymer is a bright yellow bulk crystal with the chemical formula [Zn(iba)(tkpvb)Cl] n1 , where iba represents p-iodobenzoate, tkpvb represents 1,2,4,5-tetrakis((E)-2-(4-pyridyl)vinyl)benzene, n=3000-60000; crystallographic parameters are : (1) Crystal system: monoclinic system; (2) Space group: Cc; (3) β=127.430(4)°, (4) Z=4; (5) F(000)=1680, R 1 =0.1363, wR 2 =0.3788, GOF=1.620; wherein, iba represents p-iodobenzoate, tkpvb represents 1,2,4,5-tetrakis((E)-2-(4-pyridyl)vinyl)benzene, n1=3000- 60000. The preparation method of the coordination polymer of the invention is simple, the reaction conditions are mild, and the light conversion rate is fast; at the same time, the addition reaction can occur under the irradiation of light of different wavelengths, the photo-induced nonlinear expansion performance of the material is exhibited, and the corresponding isomeric compounds.

Description

technical field [0001] The invention belongs to the technical field of photosensitive materials, in particular to a photo-induced nonlinear expansion coordination polymer and a preparation method thereof. Background technique [0002] When some flexible materials are subjected to some external stimuli, their structure will change dynamically, which will cause the material to undergo mechanical motion at the macroscopic scale, such as bending, rotating, jumping, and bursting. These stimuli include pressure, heat, pH, guest molecules, light, magnetism, etc. Such materials have shown great application prospects in the fields of information storage / transmission, biomedicine, and artificial intelligence. Among many stimuli-responsive materials, light-responsive materials have the advantages of non-contact, adjustable stimulus intensity, and rapid response, which make these materials have great application potential. In order to control the direction of the response and improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00
CPCC08G83/008C08G61/02C08G61/00C08G2261/42C08G2261/334C08G2261/149C08G2261/15C08G2261/143C08G2261/312
Inventor 郎建平杨战永倪春燕
Owner SUZHOU UNIV
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