Strong Enhancement of Circular Dichroism in a Hybrid Material Consisting of J-Aggregates and Silver Nanoparticles

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• 作者：Dzmitry Melnikau ; Diana Savateeva ; Yurii K. Gun鈥檏o ; Yury P. Rakovich
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：July 3, 2013
• 年：2013
• 卷：117
• 期：26
• 页码：13708-13712
• 全文大小：334K
• 年卷期：v.117,no.26(July 3, 2013)
• ISSN：1932-7455

文摘

We report on the chiroptical (circular dichroism) properties of hybrid organic/inorganic nano- and microstructures consisting of dye molecules in J-aggregate states (arranged in direct and reverse micelles) and silver nanoparticles. The main results are formation of micelles in a system of interacting J-aggregates and silver nanoparticles and strong (up to 8 times) enhancement in the optical activity of complexes of J-aggregates and silver nanoparticles as compared to the CD signal from the original J-aggregates. These experimental results might have potential applications in chiral species sensing and can provide some insights on mechanisms of self-assembly of supermolecular structures and the induction of their optical activity.