title: Multiple hybridized resonances of IR-806 chromonic molecules strongly coupled to Au nanorods.
abstract: 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.
authors.affiliation: Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P. R. China. qqwang@whu.edu.cn zhouli@whu.edu.cn zhhao@whu.edu.cn.
authors.forename: Ya-Fang
authors.initials: YF
authors.lastname: Zhang
authors.forename: Da-Jie
authors.initials: DJ
authors.lastname: Yang
authors.forename: Jia-Hong
authors.initials: JH
authors.lastname: Wang
authors.forename: Ya-Lan
authors.initials: YL
authors.lastname: Wang
authors.forename: Si-Jing
authors.initials: SJ
authors.lastname: Ding
authors.forename: Li
authors.initials: L
authors.lastname: Zhou
authors.forename: Zhong-Hua
authors.initials: ZH
authors.lastname: Hao
authors.forename: Qu-Quan
authors.initials: QQ
authors.lastname: Wang