Material of light emitting layer, manufacturing method thereof, and electroluminescent device

Abstract

A material of a light emitting layer, a manufacturing method thereof, and an electroluminescent device are disclosed. The material of the light emitting layer includes a spiral nanotube structure and luminescent particles. The manufacturing method of the material of the light emitting layer includes steps of manufacturing the spiral nanotube structure and steps of manufacturing a guest-host structure. The manufacturing method is easily achieved, and a compatibility of the material is high.

1 . A material of a light emitting layer, comprising: a spiral nanotube structure and luminescent particles uniformly distributed in the spiral nanotube structure. 
     
     
         2 . The material of the light emitting layer according to  claim 1 , wherein a particle diameter of the luminescent particles ranges from 1 nm to 100 nm. 
     
     
         3 . The material of the light emitting layer according to  claim 1 , wherein material of the spiral nanotube structure is a single chirality nanotube material. 
     
     
         4 . The material of the light emitting layer according to  claim 3 , wherein a chemical structural formula of the spiral nanotube structure is: 
       
         
           
           
               
               
           
         
       
     
     
         5 . The material of the light emitting layer according to  claim 1 , material of the luminescent particles includes at least one of quantum dot luminescent particles, lanthanide nanocrystals, and perovskite nanocrystals. 
     
     
         6 . A manufacturing method of material of a light emitting layer, comprising steps of:
 manufacturing a spiral nanotube structure and providing luminescent particles; and   mixing a quantity of the spiral nanotube structure with a quantity of the luminescent particles to obtain a mixture, adding the mixture to a dimethylformamide solvent, and heating the mixture and the dimethylformamide solvent in a closed environment until the mixture is dissolved in the dimethylformamide solvent, followed by standing and cooling the mixture to a room temperature, so that the luminescent particles are uniformly distributed in the spiral nanotube structure.   
     
     
         7 . The manufacturing method of the material of the light emitting layer according to  claim 6 , wherein
 when a particle diameter of the luminescent particles ranges from 20 nm to 40 nm, a proportion of the spiral nanotube structure to the luminescent particles is (10 to 17):1; and   when the particle diameter of the luminescent particles is equal to or greater than 1 nm and less than 20 nm, and/or is greater than 40 nm and equal to or less than 100 nm, the proportion of the spiral nanotube structure to the luminescent particles is (5 to 30):1.   
     
     
         8 . The manufacturing method of the material of the light emitting layer according to  claim 6 , wherein the step of manufacturing the spiral nanotube structure includes:
 placing N-tert-butoxycarbonyl-L-glutamic acid, octadecylamine, and a catalyst into a reaction vessel to fully react and obtain a first reaction solution, and adding tetrahydrofuran into the first reaction solution to dissolve residual reactants, thus purifying and obtaining intermediate compounds;   placing the intermediate compounds, dichloromethane, and trifluoroacetic acid into a reaction vessel to fully react and obtain a second reaction solution, using a rotary evaporator to remove excess solvent in the second reaction solution, and dissolving residual reactants in tetrahydrofuran, followed by adding the residual reactants into sodium bicarbonate solution, thus obtaining a target compound being a white and solid substance;   adding the target compound into tetrahydrofuran, and performing recrystallization purification; and   mixing a quantity of the purified target compound with a quantity of alcohol solvent to obtain a mixture, heating the mixture to boil in a closed environment, and cooling the mixture to a room temperature, thus forming the spiral tube structure.   
     
     
         9 . An electroluminescent device, comprising: a light emitting layer, wherein the light emitting layer includes the material of the light emitting layer according to  claim 1 . 
     
     
         10 . The electroluminescent device according to  claim 9 , further comprising: a circular polarizer disposed on the light emitting layer.