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Light-operated fluorescent switch based on coordination polymer as well as preparation method and application of light-operated fluorescent switch

A technology of coordination polymers and fluorescent switches, which is applied in optical recording/reproduction, chemical instruments and methods, luminescent materials, etc., can solve the problems of few optical switches, compounds without photosensitive activity, poor thermal stability and other applications , to achieve the effect of mild reaction conditions, high yield and simple process

Inactive Publication Date: 2018-04-06
HUAIBEI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are relatively few types of optical switches, mainly because most compounds do not have photosensitivity, and some photosensitive compounds have limited their applications due to poor thermal stability.

Method used

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  • Light-operated fluorescent switch based on coordination polymer as well as preparation method and application of light-operated fluorescent switch
  • Light-operated fluorescent switch based on coordination polymer as well as preparation method and application of light-operated fluorescent switch
  • Light-operated fluorescent switch based on coordination polymer as well as preparation method and application of light-operated fluorescent switch

Examples

Experimental program
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Embodiment Construction

[0029] Non-limiting examples are described as follows:

[0030] 4,4'-diiodo-trans-stilbene, 1,4-benzenediacetic acid, 4-pyridineboronic acid, cesium carbonate, and tetrakis(triphenylphosphine)palladium were all purchased from Shanghai Bailingwei Chemical Technology Co., Ltd., sodium hydroxide, Anhydrous magnesium sulfate, dichloromethane and N,N′-dimethylformamide were purchased from Sinopharm Chemical Reagent Co., Ltd.

[0031] 1. Preparation of organic ligands

[0032] 4.32g (10mmol) of 4,4'-diiodo-trans-stilbene, 2.95g (24mmol) of 4-pyridineboronic acid, 0.14g (2mol%) of tetrakis(triphenylphosphine)palladium, 8.15g (25mmol%) of cesium carbonate ) and N,N'-dimethylformamide (40mL) were added to a 100mL Schlenk flask, and the air in the flask was replaced with high-purity nitrogen, then stirred at a temperature of about 90°C, and the reaction was complete in about 12 hours.

[0033] After the reaction stopped, add excess water to the above reaction flask, extract three time...

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Abstract

The invention discloses a light-operated fluorescent switch based on a coordination polymer as well as a preparation method and an application of the light-operated fluorescent switch. The light-operated fluorescent switch is a coordination polymer 1--[zinc(1,4-benzene diacetoxyl)(4,4'-di(4-pyridyl)-trans-stilbene)]n or a coordination polymer 2--[zinc(1,4-benzene diacetoxyl)(1,2,3,4'-tetra(4-phenyl-4'-pyridyl)cyclobutane)0.5]n. 4,4'-di(4-pyridyl)-trans-stilbene molecules and 1,2,3,4'-tetra(4-phenyl-4'-pyridyl)cyclobutane molecules in the coordination polymer can be freely switched under radiation of light with different wavelengths, and the coordination polymer has remarkable difference in fluorescence-emission intensity before and after conversion. Therefore, the coordination polymer is atypical light-operated fluorescent switch and can be applied to the field of light information storage as a rewritable optical recording material.

Description

technical field [0001] The invention relates to the preparation and application of a novel fluorescent material, in particular to a light-controlled fluorescent switch based on a coordination polymer and its preparation method and application. Background technique [0002] Materials that can undergo reversible reactions under external stimuli often show huge differences in their chemical and physical properties before and after the reaction, so they are widely used in advanced optical, electrical, magnetic and mechanical devices. Fabrication of controllable optical switches is one of the most interesting areas because molecules can be reversibly switched between two stable states by excitation with light. The precise and controllable optical properties of optical switches make them widely used in optically controlled fluorescent switches, rewritable optical information storage devices, optical sensors, and high-resolution microscopes. Optical switches require materials to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06G11B7/241
CPCC08G83/008C09K11/06G11B7/241
Inventor 刘东陈敬敏葛宇候艺璇周乾坤王琳
Owner HUAIBEI NORMAL UNIVERSITY
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