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Application of a Dithienylethylene-Higher Order Rylene Molecule in Nondestructive Readout

A dithienylethylene, non-destructive readout technology, applied in the direction of recording/reproducing by optical methods, including the reproduction of reflectance/absorbance/color changes, instruments, etc., can solve the problem of low light resistance, limited application, strong Issues such as bistable fluorescence and low fluorescence switching ratios

Active Publication Date: 2021-08-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But they all have certain disadvantages, such as low fluorescence quantum yield, low photostability, strong bistable fluorescence and low fluorescence switch ratio, dependence on polar solvents, etc., which will greatly limit their application in optical storage.

Method used

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  • Application of a Dithienylethylene-Higher Order Rylene Molecule in Nondestructive Readout
  • Application of a Dithienylethylene-Higher Order Rylene Molecule in Nondestructive Readout
  • Application of a Dithienylethylene-Higher Order Rylene Molecule in Nondestructive Readout

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] (1) Synthesis of compound TDI-4DTE

[0084] A near-infrared fluorescent molecular switch shown in formula (eight), wherein the substituent R 1 for R 2 is a hydrogen atom; R 3 for

[0085]

[0086] The preparation method of this molecule comprises the steps:

[0087] (1) 1-(5-bromo-2-methylthiophen-3-yl)-2-[5-(4-hexyloxyphenyl)-2-methylthiophen-3-yl]perfluorocyclopentane Synthesis of alkenes (compound A, structural formula shown in formula (A)).

[0088] Add 1,2-bis(5-bromo-2-methylthiophen-3-yl)perfluorocyclopentene (3.16g, 6mmol), 4-hexyloxyphenylboronic acid (1.23 g, 6mmol), anhydrous sodium carbonate (3.18g, 30mmol), water (12ml) and ethylene glycol dimethyl ether (DME, 48ml) were stirred with a magnetic force, nitrogen gas was blown into the mixture for 20min to fully remove the solvent and the reaction system of oxygen. Then add the zero-valent palladium catalyst Pd(PPh 3 ) 4 (0.34g, 0.30mmol), immediately use a double-row tube to carefully evacuate...

Embodiment 2

[0118] The near-infrared fluorescent molecular switch shown in formula (eight) was synthesized according to the steps of the preparation method in Example 1, wherein the substituent R 1 for R 3 for

[0119]

[0120] The molecule was made into a thin film and used for lossless readout, and it was found that the molecule can be used as a near-infrared fluorescent molecular switch for lossless readout.

Embodiment 3

[0122] for molecules

[0123]

[0124] where R1 is R 3 for

[0125] The molecule was made into a thin film and used for lossless readout, and it was found that the molecule can be used as a near-infrared fluorescent molecular switch for lossless readout.

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Abstract

The invention belongs to the technical field of new materials, and more specifically relates to the application of a dithienylethylene-higher-order rylene molecule in non-destructive readout. The bithienylethylene-higher-order rylene molecule includes a higher-order rylene group and a bithienylethylene group connected through non-conjugation, wherein the higher-order rylene is one, and the bithienyl There are one or more vinyl groups; the high-order rylene group is a fluorophore, and the dithienyl vinyl group is a photochromic unit for controlling the luminescence and quenching of the fluorophore. The near-infrared fluorescent molecular switch has extremely strong near-infrared fluorescence, high fluorescence on / off ratio, good reversibility and fatigue resistance, and the PET mechanism proves that the fluorescence quenching of TDI‑4DTE is complete.

Description

technical field [0001] The invention belongs to the technical field of new materials, and more specifically relates to the application of dithienylethylene-higher-order rylene molecules in non-destructive readout. Background technique [0002] In recent years, photochromic molecules have attracted extensive attention due to their potential applications in optical memory, molecular switches, and super-resolution imaging. Among various photochromic molecules, diarylethene (DTE)-based photochromic derivatives have been extensively studied for their thermal bistability and anti-fatigue properties. Lossless readout capability is an indispensable performance of optical memory. To achieve lossless readout, several methods have been proposed, such as infrared absorption readout, optical rotation readout, supramolecular conformational change readout, etc. While some of them can achieve lossless readout, their inherent sensitivity, stability, and efficiency limitations hinder their ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/005G11B7/245G11B7/246C07D471/06C09K11/06
CPCC07D471/06C09K11/06C09K2211/1007C09K2211/1029C09K2211/1092G11B7/0052G11B7/245G11B7/246G11B2007/24624
Inventor 李冲熊凯朱明强谢诺华
Owner HUAZHONG UNIV OF SCI & TECH
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