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Fluorescent compound and preparation method and application thereof, and writing medium

A fluorescent compound and compound technology, applied in the field of fluorescent compounds and writing media, to achieve the effect of easy adjustment of display time, low energy consumption, fast and simple

Active Publication Date: 2020-06-09
重庆平创半导体研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the current rewritable materials, the duration of information displayed under specific stimuli is often random, and it is impossible to obtain a series of materials with different durations of information in a simple way, and to change the duration of information in a simple way. time

Method used

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  • Fluorescent compound and preparation method and application thereof, and writing medium
  • Fluorescent compound and preparation method and application thereof, and writing medium
  • Fluorescent compound and preparation method and application thereof, and writing medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Combine quaternary ammonium salt or quaternary phosphonium salt with SbCl 3 Mix according to the ratio shown in Table 1, add an organic solvent, stir continuously until the reaction is complete, then wash with absolute ethanol two to three times at room temperature, heat and dry to remove the organic solvent to obtain the corresponding sample. The sample numbers, reactant ratios, and products are shown in Table 1.

[0078] Table 1 Relationship between sample numbers, raw material ratios, preparation conditions and products

[0079]

[0080] Among them, DMF is N,N-dimethylformamide, and its chemical formula is: HCON(CH 3 ) 2 , is an excellent organic solvent, miscible with water and most organic solvents.

[0081] Sample 1#, sample 2# and sample 3# were characterized by x-ray single crystal diffraction, and the sample structure was analyzed by crystal structure analysis software (eg: Shelxtl97). In some cases, excitation and emission spectra were performed on a Pe...

Embodiment 2

[0088] Doping a variety of crystalline compounds in the fluorescent compound in the base material (such as paper), or coating a variety of crystalline compounds in the fluorescent compound on the base material to form a writing medium, can make the writing medium in Under the 365nm ultraviolet lamp, it emits light of the corresponding color.

[0089] Specifically, the sample 1# was evenly applied to paper to make a reusable writing medium (called fluorescent paper 1#), and the fluorescent paper could respectively emit bright orange light under a 365nm ultraviolet lamp.

Embodiment 3

[0091] On the basis of Example 2, further, the reusable writing medium is placed in the vapor of the volatile liquid for a certain period of time, which can cause the change of fluorescence or color; wherein, the change of fluorescence includes the change of fluorescence wavelength Changes and / or changes in fluorescence intensity, changes in color include changes in the range of UV-Vis absorbed light and / or changes in the intensity of UV-Vis absorbed light. It is understood that the volatile liquid is a liquid volatile compound, such as H 2 O, Methanol, etc.

[0092] Further, the change in fluorescence includes the quenching of fluorescence.

[0093] Specifically, the reusable fluorescent paper 1# was placed in a container filled with water, and exposed to water vapor for 1 hour to quench the fluorescence of the fluorescent paper 1#. That is, water is used as the extinguishing agent, and the molecules of sample 1# interact with the extinguishing agent molecules to form a coo...

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Abstract

The invention provides a fluorescent compound and a preparation method and application thereof, and a writing medium. The fluorescent compound comprises a crystalline compound formed by quaternary ammonium salt (phosphonium) cations and metal halide anions, and has a structural formula of [R<1>R<2>R<3>R<4>X][MY<c>][Z]<d>, wherein X is nitrogen or phosphorus; M is a main group metal element or a transition metal element; Y is halogen or pseudo-halogen; Z is a volatile compound; a is a natural number in a range of 1 to 6; b is a natural number in a range of 1 to 6; c is a natural number ina range of 3 to 20; d is a natural number in a range of 0 to 6; substituent groups R<1>, R<2>, R<3> and R<4> of X are respectively, independently and optionally selected from a group consisting of hydrogen, C1-C18 alkyl groups, C2-C18 alkenyl groups, C2-C18 alkynyl groups, aromatic compound groups and heterocyclic compound groups. The fluorescent compound provided by the invention can be combinedwith volatile liquid molecules to cause the change of fluorescence or color, and is separated from the volatile liquid molecules under heat treatment to recover the fluorescence or color, so the effect of repeatable writing is realized; the preparation method is simple; and the mode of changing fluorescence duration is simple.

Description

technical field [0001] The present invention relates to the technical field of functional materials, in particular to a fluorescent compound, a method for preparing the fluorescent compound, an application of the fluorescent compound, and a writing medium containing the fluorescent compound. Background technique [0002] Currently, in general, rewritable materials need to switch between “on” and “off” colors or fluorescent colors under specific stimuli. Such stimuli include light, heat, mechanical force, chemical substances (water, acid, alkali), etc., and the types of materials include organic dyes, metal-organic coordination polymers, organic-inorganic hybrid materials, etc. Among them, fluorescent materials are of great significance in human and social development. [0003] However, in the current rewritable materials, the duration of information displayed under specific stimuli is often random, and it is impossible to obtain a series of materials with different duration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/63C07C209/00C07F9/54C09K11/06
CPCC07C211/63C07F9/5442C09K11/06C07B2200/13C09K2211/1014C09K2211/1007
Inventor 王泽平陈显平
Owner 重庆平创半导体研究院有限责任公司
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