Multiple hybridized resonances of IR-806 chromonic molecules strongly coupled to Au nanorods.
Multiple hybridized resonances of IR-806 chromonic molecules strongly coupled to Au nanorods.
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DOI：
10.1039/c5nr00051c
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发表时间：
2015-04
期刊：
影响因子：
6.7
通讯作者：
Yafang Zhang;Da-Jie Yang;Jia-Hong Wang;Ya-lan Wang;Si-Jing Ding;Li Zhou;Zhong-Hua Hao;Ququan Wang
中科院分区：
文献类型：
--
作者：
Yafang Zhang;Da-Jie Yang;Jia-Hong Wang;Ya-lan Wang;Si-Jing Ding;Li Zhou;Zhong-Hua Hao;Ququan Wang
等离子体激元和分子的强耦合产生有趣的杂化共振。IR-806分子是一种具有多分子带的近红外菁液晶染料，其可调吸收光谱随浓度变化显著。在本文中，我们研究了Au纳米棒（aunr）与IR-806分子强耦合的多重杂化共振。在AuNR@IR-806杂化体的消光光谱中观察到5个杂化共振峰。首次报道了在840 nm和912 nm处的两个共振峰。同时也证明了多杂化峰与aunr裸等离子体共振波长和分子浓度的关系。本文的观测结果为液晶分子的光学响应调谐提供了等离子体-分子耦合的途径。
Strong coupling of plasmons and molecules generates intriguingly hybridized resonance. The IR-806 molecule is a near-infrared cyanine liquid crystal dye with multiple molecular bands and its tunable absorption spectrum varies dramatically with concentration. In this article, we investigate multiple hybridized resonances of the Au nanorods (AuNRs) strongly coupled to IR-806 molecules. Five hybridized resonance peaks are observed in the extinction spectra of the AuNR@IR-806 hybrids. Two resonance peaks at approximately 840 and 912 nm in the hybrids are reported for the first time. The dependence of the multiple hybridized peaks on the bare plasmon resonance wavelength of AuNRs and the molecular concentration is also demonstrated. The observations presented herein provide a plasmon-molecule coupling route for tuning optical responses of liquid crystal molecules.