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Application of azanthene derivatives as single-photon weak-light upconversion luminescent materials

A derivative, the technology of axanthene, applied in the field of application of azaanthene derivatives as single-photon absorption upconversion luminescent materials, can solve the blank structure-property relationship of OPA-UC materials, OPA-UC few reports, etc. question

Active Publication Date: 2020-11-06
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the research in the direction of weak light upconversion is carried out around TTA-UC, and the research on OPA-UC is rarely reported, and the research on the structure-property relationship of OPA-UC materials is still blank.

Method used

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  • Application of azanthene derivatives as single-photon weak-light upconversion luminescent materials
  • Application of azanthene derivatives as single-photon weak-light upconversion luminescent materials
  • Application of azanthene derivatives as single-photon weak-light upconversion luminescent materials

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this example, the UV-Vis absorption spectrum was measured on a UV-2600 UV-Vis spectrometer from Shimadzu Corporation of Japan; the fluorescence spectrum was measured on a FLS 920 Fluorescence / Phosphorescence Emission Spectrometer from Edinburgh Corporation.

[0034] figure 1 is the solvent effect UV-Vis absorption spectrum of azanthene derivatives, under the same concentration (concentration is 1×10 -5 M), the absorption peaks of the three compounds are red-shifted, PSF is red-shifted by 7 nm from 530 nm to 537 nm, SFT is red-shifted by 6 nm from 532 nm to 538 nm, and MTV is red-shifted from 556 nm to 560 nm 4 nm, it can be seen that the π-π * jump.

[0035] figure 2The UV-Vis absorption spectra of azanthene derivatives at different concentrations were tested. In the solvent DMSO, the absorption values ​​of the three azaanthene derivatives increase with the increase of the concentration, and when the concentration increases to 1×10 -4 At M, a platform peak ap...

Embodiment 2

[0039] One-component up-conversion (OPA-UC) spectra of azaanthene derivatives were tested. In this embodiment, a diode-pumped solid-state red laser from Changchun New Industry Optoelectronics Technology Co., Ltd. and a PR655 SpectraScan spectrometer from PhotoResearch, USA were used to test the upconversion spectrum. A comparative test was carried out with PSF and MTV to study the effect on OPA-UC, and the solvent was DMSO (dimethyl sulfoxide).

[0040] Using a 655 nm CW semiconductor laser as a light source, the up-conversion spectra of two azaanthene derivatives (concentration of 50 μM) were measured, as shown in Figure 5 shown. in Figure 5 (a and b) are the power density-upconversion spectra of PSF and MTV, respectively. It can be seen that the upconversion intensity of each azanthene derivative increases with the increase of power density. Figure 5 (c and d) Log-linear plots of upconverted integrated intensity-power density for PSF and MTV, respectively. at power de...

Embodiment 3

[0044] One-component upconversion (OPA-UC) efficiency and performance comparison of azanthene derivatives.

[0045] Taking ZnPc as a reference, the fluorescence quantum yield in DMF solvent is Φ r =32%. pass Figure 8 The excitation spectra of the azanthene derivatives were tested, and their respective excitation intensity values ​​at 655 nm were obtained, which were substituted into the following formula to calculate the upconversion efficiencies of each at different concentrations.

[0046]

[0047] Different concentrations are listed in Table 1 (low concentration 1×10 -5 M and High Concentration 1×10 -3 M) Various parameters for calculation of OPA-UC efficiency of azanthene derivatives. combine Figure 9 It can be seen from the concentration-up-conversion efficiency curve that the up-conversion efficiency increases significantly as the solution concentration of the azanthene derivative increases. From low concentration to high concentration, the OPA-UC efficiency...

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Abstract

The invention relates to an application of an azaanthracene derivative as a single-photon weak light up-conversion luminescence agent material. By using the azaanthracene derivative as a luminescent agent material for single-photon absorption up-conversion, red light can be excited at 655nm, a red-to-yellow single-photon absorption up-conversion fluorescent color-changing effect of orange light ofabout 610nm can be obtained, up-conversion color change can be achieved without deoxygenation, and the types of luminescent agent materials in the field of single-photon absorption up-conversion areenriched.

Description

technical field [0001] The invention relates to a heterocyclic compound, which is an azanthene derivative, and specifically relates to the application of an azanthene derivative as a single-photon absorption up-conversion luminescent material. Background technique [0002] Organic upconversion (Upconversion, UC) refers to a phenomenon in which an organic molecular system emits short-wavelength (high-energy) light by absorbing long-wavelength (low-energy) light. According to the excitation light source, there are strong light and weak light, and up-conversion is also called strong light up-conversion and weak light up-conversion. The former, such as two-photon absorption upconversion (TPA-UC), requires excitation light source intensity up to MW cm in the process of TPA-UC -2 Even GW cm -2 Obviously, such a high-intensity excitation light source limits the practical application of strong two-photon absorption upconversion. Weak light up-conversion refers to the -2 Under t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D241/46
CPCC07D241/46C09K11/06C09K2211/1044
Inventor 王筱梅朱琳居晓雷叶常青梁作芹周宇扬陈硕然
Owner SUZHOU UNIV OF SCI & TECH
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