Self-Assembled Organic Nanocrystals with Strong Nonlinear Optical Response

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• 作者：Shaked Rosenne ; Eran Grinvald ; Elijah Shirman ; Lior Neeman ; Sounak Dutta ; Omri Bar-Elli ; Regev Ben-Zvi ; Eitan Oksenberg ; Petr Milko ; Vyacheslav Kalchenko ; Haim Weissman ; Dan Oron ; Boris Rybtchinski
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：November 11, 2015
• 年：2015
• 卷：15
• 期：11
• 页码：7232-7237
• 全文大小：512K
• ISSN：1530-6992

文摘

Facile molecular self-assembly affords a new family of organic nanocrystals that, unintuitively, exhibit a significant nonlinear optical response (second harmonic generation, SHG) despite the relatively small molecular dipole moment of the constituent molecules. The nanocrystals are self-assembled in aqueous media from simple monosubstituted perylenediimide (PDI) molecular building blocks. Control over the crystal dimensions can be achieved via modification of the assembly conditions. The combination of a simple fabrication process with the ability to generate soluble SHG nanocrystals with tunable sizes may open new avenues in the area of organic SHG materials.