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Phosphorescent material and preparation method thereof

A technology for phosphorescent materials and organic dyes, applied in the field of phosphorescent materials and their preparation, can solve problems such as molecular design of complex synthesis processes, and achieve the effects of reasonable cost, convenient preparation and large control space

Active Publication Date: 2021-07-16
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods usually require complicated synthetic procedures and delicate molecular design, requiring the modification of heavy atoms, vinyl groups, or other necessary functional groups on the dyes.
So far, it has not been reported that a single polymer matrix can directly convert organic dyes into phosphorescent materials without any modification.

Method used

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  • Phosphorescent material and preparation method thereof
  • Phosphorescent material and preparation method thereof
  • Phosphorescent material and preparation method thereof

Examples

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Embodiment 1

[0037] The method for preparing a phosphorescent material in this embodiment includes the following steps:

[0038] (1) The polydimethyldiallyl ammonium chloride solution (as shown in formula II) of 15mL 35% mass fraction is placed in the potassium bromide solution of 1000mL 15g / L and is dialyzed, and gained product is placed in pure water again For dialysis, repeat the operation of redialysis in potassium bromide solution and pure water three times, and then dialyze in pure water five times to remove excess potassium bromide. The resulting solution was dried to obtain polydimethyldiallylammonium bromide (as shown in formula I-1).

[0039] (2) Mix 40 μL of 2.25mol / L polydimethyldiallylammonium bromide solution and 20 μL of 7.50 mmol / L ethanol solution of naphthalene imine, dry at 40°C for 20 minutes, and then dry at 60°C °C for 10 minutes, and then vacuum-dried at 30 °C for 2 days to obtain a pure organic room-temperature phosphorescent material. Its phosphorescent emission ...

Embodiment 2

[0041] The method for preparing a phosphorescent material in this embodiment includes the following steps:

[0042] (1) The polydimethyldiallyl ammonium chloride solution (as shown in formula II) of 15mL 35% mass fraction is placed in the potassium bromide solution of 1000mL 15g / L and is dialyzed, and gained product is placed in pure water again For dialysis, repeat the operation of redialysis in potassium bromide solution and pure water three times, and then dialyze in pure water five times to remove excess potassium bromide. The resulting solution was dried to obtain polydimethyldiallylammonium bromide (as shown in formula I-1).

[0043] (2) 40 μL of 2.25mol / L polydimethyldiallylammonium bromide solution and 20 μL of 15.00mmol / L ethanol solution of S-binaphthol were mixed uniformly, dried at 40°C for 20 minutes, and then Dry at 60°C for 10 minutes, and then vacuum dry at 30°C for 2 days to obtain a pure organic room temperature phosphorescent material. Its phosphorescent e...

Embodiment 3

[0045] The method for preparing a phosphorescent material in this embodiment includes the following steps:

[0046](1) The polydimethyldiallyl ammonium chloride solution (as shown in formula II) of 15mL 35% mass fraction is placed in the potassium bromide solution of 1000mL 15g / L and is dialyzed, and gained product is placed in pure water again For dialysis, repeat the operation of redialysis in potassium bromide solution and pure water three times, and then dialyze in pure water five times to remove excess potassium bromide. The resulting solution was dried to obtain polydimethyldiallylammonium bromide (as shown in formula I-1).

[0047] (2) Mix 40 μL of 2.25 mol / L polydimethyldiallylammonium bromide solution and 20 μL of 15.00 mmol / L ethanol solution of 6,7-dihydroxycoumarin, and dry at 40°C 20 minutes, and then dried at 60° C. for 10 minutes, and then vacuum-dried at 30° C. for 2 days to obtain a pure organic room-temperature phosphorescent material. Its phosphorescent em...

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Abstract

The invention discloses a phosphorescent material and a preparation method thereof. The phosphorescent material comprises a heavy ion polymer and an organic dye, the heavy ion polymer is one or a mixture of two of polymers represented by formulas (I-1)-(I-2); the organic dye is one or a mixture of more of naphthalimide, binaphthol, a coumarin compound, quinine sulfate, rhodamine B and acridine-3,6-diamine hydrochloride, or other organic dye. The external heavy atom effect and the rigidity effect of ionic bonds are utilized to jointly induce room-temperature phosphorescence, no heavy metal participates in, preparation is convenient, cost and toxicity are low, modification is not needed, and new dye is synthesized.

Description

technical field [0001] The present application relates to the technical field of organic luminescent materials, in particular to a phosphorescent material and a preparation method thereof. Background technique [0002] Luminescent materials, including fluorescent and phosphorescent materials, have become a research hotspot since their discovery. Compared with fluorescent materials, room temperature phosphorescent (Room Temperature Phosphorescence, RTP) materials have attracted extensive attention because of their large Stokes shift and longer lifetime. These advantages facilitate its applications in molecular switches, organic light-emitting diodes (OLEDs), anti-counterfeiting, and bioimaging. Pure organic molecules usually emit phosphorescence at low temperatures (e.g., 77K) and inert environments, so conventional phosphorescent materials focus on inorganic and organometallic systems, and such systems usually rely on heavy metals such as platinum and iridium to facilitate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/00C08F126/02C08K5/3437C08K5/13C08K5/1545C09K11/06
CPCC08F8/00C08K5/13C08K5/1545C08K5/3437C09K11/06C09K2211/1466C08F126/02
Inventor 马骧严子昂田禾
Owner EAST CHINA UNIV OF SCI & TECH
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