Layer-by-Layer Self-Assembly under High Gravity Field

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• 作者：Lanxin Ma ; Mengjiao Cheng ; Guijin Jia ; Youqing Wang ; Qi An ; Xiaofei Zeng ; Zhigang Shen ; Yajun Zhang ; Feng Shi
• 刊名：Langmuir
• 出版年：2012
• 出版时间：June 26, 2012
• 年：2012
• 卷：28
• 期：25
• 页码：9849-9856
• 全文大小：460K
• 年卷期：v.28,no.25(June 26, 2012)
• ISSN：1520-5827

文摘

In the present article, we have developed a facile and rapid method to fabricate a polyelectrolyte multilayer under high gravity field and investigated the difference of mass transfer in the diffusing process between LbL self-assembled technique under high gravity field (HG-LbL) and dipping assembly. Herein, we have employed polyethyleneimine and zinc oxide nanoparticles, which is a well-known UV blocking material with typical absorption properties in the range of 300鈥?00 nm, as building blocks and applied hydrogen bonding as the driving force to construct the multilayer under HG-LbL and dipping assembly. The results show that, compared with dipping assembly, HG-LbL can highly improve the utilization and adsorption efficiency of building blocks by hastening the diffusing process, and meanwhile the resulting multilayer films still achieve comparable quality as those prepared from dipping assembly.