Experimental verification of nanonization enhanced solubility for poorly soluble optoelectronic molecules

doi:10.1016/j.cjche.2023.02.017

Chinese Journal of Chemical Engineering ›› 2023, Vol. 60 ›› Issue (8): 8-15.DOI: 10.1016/j.cjche.2023.02.017

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Experimental verification of nanonization enhanced solubility for poorly soluble optoelectronic molecules

Jingzhou Guo^1,2, Yuanzuo Zou^1,2, Bo Shi^1,2, Yuan Pu², Jiexin Wang^1,2, Dan Wang^1,2, Jianfeng Chen^1,2

1. State Key Laboratory of Organic Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;
2. Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China

Received:2022-11-28 Revised:2023-02-12 Online:2023-10-28 Published:2023-08-28
Contact: Yuan Pu,E-mail:puyuan@mail.buct.edu.cn;Dan Wang,E-mail:wangdan@mail.buct.edu.cn
Supported by:
We are grateful for financial support from National Natural Science Foundation of China (22288102) and the Fundamental Research Funds for the Central Universities of China (buctrc202016).

Experimental verification of nanonization enhanced solubility for poorly soluble optoelectronic molecules

Jingzhou Guo^1,2, Yuanzuo Zou^1,2, Bo Shi^1,2, Yuan Pu², Jiexin Wang^1,2, Dan Wang^1,2, Jianfeng Chen^1,2

1. State Key Laboratory of Organic Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;
2. Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China

通讯作者: Yuan Pu,E-mail:puyuan@mail.buct.edu.cn;Dan Wang,E-mail:wangdan@mail.buct.edu.cn
基金资助:
We are grateful for financial support from National Natural Science Foundation of China (22288102) and the Fundamental Research Funds for the Central Universities of China (buctrc202016).

Abstract

Abstract: Solubility enhancement has been a priority to overcome poor solubility with optoelectronic molecules for solution-processable devices. This study aims to obtain experimental data on the effect of particle sizes on the solubility properties of several typical optoelectronic molecules in organic solvents, including the solubility results of 1,3-bis(9-carbazolyl)benzene (mCP), 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene (TPBi) and 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole (PBD) in ethanol and acetonitrile, respectively. Nanoparticles of mCP, TPBi and PBD with sizes from dozens to several hundred nanometers were prepared by solvent antisolvent precipitation method and their solubility were determined by using isothermal saturation method. The saturation solubility of nanoparticles of three kinds of optoelectronic molecules exhibited increase of 12.9%-25.7% in comparison to the same raw materials in the form of microparticles. The experimental evidence indicates that nanonization technology is a feasible way to make optoelectronic molecules dissolve in liquids with enhanced solubility.

Key words: Nanonization, Solubility enhancement, Optoelectronic molecules, Solution processing

摘要： Solubility enhancement has been a priority to overcome poor solubility with optoelectronic molecules for solution-processable devices. This study aims to obtain experimental data on the effect of particle sizes on the solubility properties of several typical optoelectronic molecules in organic solvents, including the solubility results of 1,3-bis(9-carbazolyl)benzene (mCP), 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene (TPBi) and 2-(4-tert-butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole (PBD) in ethanol and acetonitrile, respectively. Nanoparticles of mCP, TPBi and PBD with sizes from dozens to several hundred nanometers were prepared by solvent antisolvent precipitation method and their solubility were determined by using isothermal saturation method. The saturation solubility of nanoparticles of three kinds of optoelectronic molecules exhibited increase of 12.9%-25.7% in comparison to the same raw materials in the form of microparticles. The experimental evidence indicates that nanonization technology is a feasible way to make optoelectronic molecules dissolve in liquids with enhanced solubility.

关键词: Nanonization, Solubility enhancement, Optoelectronic molecules, Solution processing

Jingzhou Guo, Yuanzuo Zou, Bo Shi, Yuan Pu, Jiexin Wang, Dan Wang, Jianfeng Chen. Experimental verification of nanonization enhanced solubility for poorly soluble optoelectronic molecules[J]. Chinese Journal of Chemical Engineering, 2023, 60(8): 8-15.

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Experimental verification of nanonization enhanced solubility for poorly soluble optoelectronic molecules

Experimental verification of nanonization enhanced solubility for poorly soluble optoelectronic molecules

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