Application of cycloalkane alcohol as additive in preparation of quantum dot ink, quantum dot ink and preparation method of quantum dot ink
A technology of naphthenic alcohol and quantum dots, which is applied in the field of quantum dot luminescence, and can solve problems such as unsatisfactory, difficult control of process parameters, and difficult operation.
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[0045] The embodiment of the present invention also provides a preparation method of an embodiment of the above-mentioned quantum dot ink, including the following steps:
[0046] After mixing the quantum dots with the solvent, cycloalkane alcohol is added and mixed to obtain the quantum dot ink.
[0047] The order of mixing the quantum dots, the solvent and the cycloalkane alcohol is not strictly limited, preferably, the quantum dots are mixed with the solvent, and then the cycloalkane alcohol is added for mixing. Because oil-soluble quantum dots are better dispersed in nonpolar or weakly polar solvents, the present invention first disperses quantum dots in solvents, and then adds a small amount of additives, which will not affect the dispersion of quantum dots; if cycloalkane Alcohol and quantum dots are mixed first. Although cycloalkane alcohol has a certain dispersibility to quantum dots, the dispersibility is not as good as that of non-polar solvents, and cycloalkane alcoh...
Embodiment 1
[0055] Mix 78g of cyclohexylbenzene and 2g of CdS quantum dots whose surface ligand is oleylamine evenly, stir in a 250mL round bottom flask for 30min, then add 20g of terpineol, and stir for another 30min at room temperature to obtain quantum dot ink, such as figure 1 (a) shown. The quantum dot ink has been placed for 100 days without precipitation, such as figure 1 As shown in (b), it shows that the stability of the quantum dot ink is good.
[0056] With reference to the preparation method of Example 1, keep the solid content ratio of CdS quantum dots constant, change the ratio of terpineol in quantum dot ink (from 0 to 30%), prepare a series of quantum dot inks and test viscosity and surface tension, as a result figure 2 As shown, with the increase of the amount of cycloalkane alcohol added, the viscosity of the obtained quantum dot ink can be adjusted from the initial 2.55Cp to 3.55, while the surface tension is still maintained at about 33mN / m.
Embodiment 2
[0060] Mix 43g of cyclohexylbenzene, 40g of diethylbenzene, and 2g of CdS quantum dots whose surface ligand is oleylamine evenly, stir in a 250mL round bottom flask for 30min, then add 15g of terpineol, and stir for another 30min at room temperature to obtain Quantum dot ink.
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