C6H10N2PbBr4 material as well as preparation method and application thereof

Abstract

The invention relates to the technical field of high-voltage luminescence, and particularly discloses a C6H10N2PbBr4 material as well as a preparation method and application thereof. Comprising the following steps: (1) dissolving PbBr2 in an HBr solution, heating and stirring to obtain a PbBr2 solution; (2) neutralizing 4-(aminomethyl) pyridine with an HBr solution to obtain a 4-(aminomethyl) pyridine solution; and (3) adding the 4-(aminomethyl) pyridine solution in the step (2) into the PbBr2 solution in the step (1), stirring, cooling and drying to obtain the C6H10N2PbBr4 material. According to the present invention, the C6H10N2PbBr4 material is prepared, and the fluorescence peak position can be changed through the pressure, such that the material can correspondingly display different fluorescence colors so as to further enhance the optical performance and the fluorescence regulation performance of the C6H10N2PbBr4 material.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage luminescence, and in particular to a C6H 10 N2PbBr4 material, preparation method and application thereof. Background Art

[0002] With the development of science and technology, optical technology is increasingly used in various fields, such as optical communication, laser technology, biomedical imaging, display technology, etc. However, the optical performance and fluorescence regulation issues in optical systems are becoming more and more important. Optical performance refers to the description of the physical properties of light signals in optical systems, such as intensity, direction, wavelength, polarization state, etc., while fluorescence regulation refers to the regulation and control of the intensity, wavelength, time, etc. of fluorescence signals in optical systems.

[0003] Optical performance and fluorescence regulation have an important impact on the performance and application of optical systems. Good optical performance can ensure the stability, reliability and efficiency of optical systems, while fluorescence regulation can achieve precise control and regulation of optical signals, thereby improving the application value and practical effect of optical systems. In specific applications, the importance of optical performance and fluorescence regulation is reflected in: in optical communication systems, optical performance and fluorescence regulation have an important impact on the transmission quality and stability of signals; in laser technology, optical performance and fluorescence regulation are of great significance to the control of the intensity, direction and wavelength of laser beams; in biomedical imaging, optical performance and fluorescence regulation have an important impact on the quality and resolution of images; in display technology, optical performance and fluorescence regulation have an important impact on the performance indicators of displays such as brightness, contrast and color saturation.

[0004] Since the optical system requires higher optical performance and fluorescence regulation performance for fluorescent materials, the current optical materials cannot achieve precise control and regulation of performance, which severely limits the application of materials. Therefore, it is necessary to provide a C6H 10 N2PbBr4 material and its preparation method and application improve the optical properties and fluorescence regulation properties of the material, and further improve the application ability of the material. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention proposes a C6H 10 N2PbBr4 material and its preparation method and application improve the optical properties and fluorescence regulation properties of the material, and further improve the application ability of the material.

[0006] A first aspect of the present invention provides a C6H 10 Preparation method of N2PbBr4 material.

[0007] Specifically, the following steps are included:

[0008] (1) dissolving PbBr2 in HBr solution, heating, and stirring to obtain a PbBr2 solution;

[0009] (2) neutralizing 4-(aminomethyl)pyridine with the HBr solution to obtain a 4-(aminomethyl)pyridine solution;

[0010] (3) Add the 4-(aminomethyl)pyridine solution of step (2) to the PbBr2 solution of step (1), stir, cool, and dry to obtain C6H 10 N2PbBr4 material.

[0011] Preferably, in step (1), the heating temperature is 115-125°C.

[0012] Further preferably, in step (1), the heating temperature is 115-120°C.

[0013] More preferably, in step (1), the heating temperature is 120°C.

[0014] Preferably, in step (3), the drying temperature is 55 to 65° C. and the drying time is 12 to 36 hours.

[0015] Further preferably, in step (3), the drying temperature is 60-65° C. and the drying time is 24-36 hours.

[0016] More preferably, in step (3), the drying temperature is 60° C. and the drying time is 24 h.

[0017] A second aspect of the present invention provides a C6H 10 N2PbBr4 material.

[0018] Specifically, the C6H 10 The N2PbBr4 material is prepared by the preparation method provided in the first aspect.

[0019] A third aspect of the present invention provides a C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0020] The fourth aspect of the present invention provides a method applied by the third aspect.

[0021] Specifically, the following steps are included:

[0022] C6H 10 The N2PbBr4 material was placed in a sealed sample chamber of a high-pressure device, pressurized to 0.4-11.8 GPa at room temperature, and the fluorescence spectrum was detected.

[0023] Preferably, the high pressure device comprises a diamond anvil.

[0024] Preferably, the material used to seal the sample cavity comprises a steel sheet.

[0025] Preferably, the step of detecting the broad spectrum of fluorescence comprises the following steps:

[0026] The ruby ​​standard pressure method was used to record the ruby ​​fluorescence spectrum after pressurization. Then, a confocal high-voltage in-situ photoluminescence test system was used to emit a light beam through the C6H 10 N2PbBr4 material, recording fluorescence spectrum.

[0027] Preferably, the excitation light source of the ruby ​​fluorescence spectrum is a 480-500nm excitation light source.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The present invention prepares a C6H 10 N2PbBr4 material, and the fluorescence peak position can be changed by pressure, so that the material can show different fluorescence colors accordingly, further enhancing the C6H 10 Optical properties and fluorescence regulation properties of N2PbBr4 materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The C6H prepared in Example 1 10 XRD pattern of N2PbBr4 material characterization;

[0031] Figure 2 The C6H prepared in Example 1 10 SEM images of N2PbBr4 material characterization;

[0032] Figure 3 For comparative example 1, at a pressure of 1 atm, C6H 10 Fluorescence spectrum of N2PbBr4;

[0033] Figure 4 The fluorescence spectra of Example 2 and Comparative Example 1 are compared;

[0034] Figure 5 The fluorescence spectra of Example 3 and Comparative Example 1 are compared;

[0035] Figure 6 The fluorescence spectra of Example 4 and Comparative Example 1 are compared;

[0036] Figure 7 The fluorescence spectra of Example 5 and Comparative Example 1 are compared;

[0037] Figure 8 The fluorescence spectra of Example 6 and Comparative Example 1 are compared;

[0038] Fig. 9 The fluorescence spectra of Example 7 and Comparative Example 1 are compared;

[0039] Fig.10 is C6H under the conditions of Examples 2 to 7 and Comparative Example 1 10 Fluorescence color image of N2PbBr4. DETAILED DESCRIPTION

[0040] In order to make the technical scheme of the present invention more clearly understood by those skilled in the art, the following embodiments are listed for illustration. It should be pointed out that the following embodiments do not limit the protection scope of the present invention.

[0041] Unless otherwise specified, the raw materials, reagents or devices used in the following examples can be obtained from conventional commercial sources or by existing known methods.

[0042] Example 1

[0043] A C6H 10 N2PbBr4 material and preparation method thereof.

[0044] The specific steps are as follows:

[0045] (1) Dissolve 0.367 g of PbBr2 in 5.0 mL of HBr solution, heat to 120°C in an oil bath, and then stir vigorously until the solid is completely dissolved to obtain a PbBr2 solution;

[0046] (2) neutralizing 0.216 g of 4-(aminomethyl)pyridine with 1 mL of HBr solution to obtain a 4-(aminomethyl)pyridine solution;

[0047] (3) slowly dropwise adding the 4-(aminomethyl)pyridine solution of step (2) to the PbBr2 solution of step (1), stirring continuously, removing heat, and air cooling without stirring. When slowly cooled at room temperature, needle-shaped colorless precipitate crystals appear. The precipitate crystals are dried in a vacuum oven at 60° C. for 24 h to obtain C6H 10 N2PbBr4 material.

[0048] Example 2

[0049] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0050] The diamond anvil cell (DAC) was used to 10The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 0.4 GPa at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with an emission wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 0.4GPa, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence change at 0.4GPa.

[0051] Example 3

[0052] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0053] The diamond anvil cell (DAC) was used to 10 The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 1.1 GPa at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with a wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 1.1GPa, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence change at 1.1GPa.

[0054] Example 4

[0055] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0056] The diamond anvil cell (DAC) was used to 10 The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 2.3 GPa at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with an emission wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 2.3GPa, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence changes at 2.3GPa.

[0057] Example 5

[0058] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0059] The diamond anvil cell (DAC) was used to 10 The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 4.4 GPa at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with an emission wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 4.4GPa, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence changes at 4.4GPa.

[0060] Example 6

[0061] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0062] The diamond anvil cell (DAC) was used to 10 The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 7.1 GPa at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with a wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 7.1GPa, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence changes at 7.1GPa.

[0063] Example 7

[0064] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0065] The diamond anvil cell (DAC) was used to 10 The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 11.8 GPa at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with a wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 11.8GPa, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence change at 11.8GPa.

[0066] Comparative Example 1

[0067] C6H 10 Application of N2PbBr4 material in pressure calibration field.

[0068] The diamond anvil cell (DAC) was used to 10 The N2PbBr4 sample was subjected to pressure test, and dimethyl silicone oil was added as the pressure transmission medium to fully ensure that the pressure in the cavity was hydrostatic pressure. The ruby ​​pressure method was used to pressurize the sample to 1 atm at room temperature, and the corresponding fluorescence spectrum was recorded. The light beam was emitted by a UV laser with an emission wavelength of 355 nm through the C6H 10 N2PbBr4, record the fluorescence spectrum corresponding to 1atm, and use the camera to capture the C6H 10 Fluorescence photograph of N2PbBr4 material, observing the fluorescence changes at 1atm.

[0069] Performance testing:

[0070] Figure 1 The C6H prepared in Example 1 10 XRD pattern of N2PbBr4 material characterization. By comparing the XRD pattern with the simulated standard XRD pattern, it is further explained that the synthesized C6H 10 The N2PbBr4 material is phase pure.

[0071] Figure 2 It is based on the synthesis of C6H 10 The SEM image of N2PbBr4 material shows that the material has good morphology.

[0072] Figure 3 The comparative example 1 is C6H at a pressure of 1 atm 10 The fluorescence spectrum of N2PbBr4 has a peak at 584nm;

[0073] Figure 4 Example 2 is C6H at a pressure of 0.4 GPa 10 The fluorescence spectrum of N2PbBr4 has a peak at 564nm;

[0074] Figure 5 Example 3: C6H at a pressure of 1.1 GPa 10 The fluorescence spectrum of N2PbBr4 has a peak at 544nm;

[0075] Figure 6 Example 4: C6H at a pressure of 2.3 GPa 10 The fluorescence spectrum of N2PbBr4 has a peak at 524nm;

[0076] Figure 7 Example 5: C6H at a pressure of 4.4 GPa 10The fluorescence spectrum of N2PbBr4 has a peak at 514nm;

[0077] Figure 8 Example 6 is C6H at a pressure of 7.1 GPa 10 The fluorescence spectrum of N2PbBr4 has a peak at 504nm; Fig. 9 Example 7: C6H at a pressure of 11.8 GPa 10 The fluorescence spectrum of N2PbBr4 shows that it does not emit light at 11.8GPa. Fig.10 Clearly showing the C6H from 1atm to 11.8GPa 10 The fluorescence color of N2PbBr4 changes from yellow to cyan. According to the change of pressure and fluorescence color, the C6H 10 N2PbBr4 can effectively adjust the fluorescence properties and fluorescence color, and effectively explore the means of improving fluorescence properties and the application prospects of materials.

[0078] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution obtained by any modification, equivalent replacement, improvement, etc. made by a person skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection determined by the claims.

Claims

1. A C6H 10 The preparation method of N2PbBr4 material is characterized in that: The following steps are involved: (1) dissolving PbBr2 in HBr solution, heating, and stirring to obtain a PbBr2 solution; (2) neutralizing 4-(aminomethyl)pyridine with the HBr solution to obtain a 4-(aminomethyl)pyridine solution; (3) Add the 4-(aminomethyl)pyridine solution of step (2) to the PbBr2 solution of step (1), stir, cool, and dry to obtain C6H 10 N2PbBr4 material.

2. The preparation method according to claim 1, characterized in that: In step (1), the heating temperature is 115-125°C.

3. The preparation method according to claim 1, characterized in that: In step (3), the drying temperature is 55 to 65° C. and the drying time is 12 to 36 hours.

4. A C6H 10 N2PbBr4 material, characterized in that The C6H 10 The N2PbBr4 material is prepared by the preparation method described in any one of claims 1 to 3.

5. C6H described in claim 4 10 Application of N2PbBr4 material in pressure calibration field.

6. The method of use as claimed in claim 5, characterized in that The following steps are involved: C6H 10 The N2PbBr4 material was placed in a sealed sample chamber of a high-pressure device, pressurized to 0.4-11.8 GPa at room temperature, and the fluorescence spectrum was detected.

7. The method according to claim 6, characterized in that The high pressure device includes a diamond anvil.

8. The method according to claim 6, characterized in that The material for sealing the sample cavity comprises a steel sheet.

9. The method according to claim 6, characterized in that The step of detecting the broad spectrum of fluorescence comprises the following steps: The ruby ​​standard pressure method was used to record the ruby ​​fluorescence spectrum after pressurization. Then, a confocal high-voltage in-situ photoluminescence test system was used to emit a light beam through the C6H 10 N2PbBr4 material, recording fluorescence spectrum.

10. The method according to claim 9, characterized in that The excitation light source of the ruby ​​fluorescence spectrum is a 480-500nm excitation light source.

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