Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 7, Pages 7288-7295Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b20179
Keywords
exciton-polaritons; metal-organic framework; strong coupling; multimode coupling; rhodamine B; angle-resolved reflectivity
Funding
- National University of Singapore
- Indian Institute of Technology, Madras
- UGC, New Delhi, India
- Singapore Government
- National University of Singapore: MOE Tier 1 [R144-000-401-114]
- DST, New Delhi, India
- MNRE, New Delhi, India
- SERB, New Delhi, India [YSS/2015/001088/CS]
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We report the observation of multimode exciton-polaritons in single-crystalline microplates of a two-dimensional (2D) layered metal-organic framework (MOF), which can be synthesized through a facile solvothermal approach, thereby eliminating all fabrication complexities usually involved in the construction of polariton cavities. With a combination of experiments and theoretical modeling, we have found that the exciton-polaritons are formed at room temperature as a result of a strong coupling between Fabry-Perot cavity modes formed inherently by two parallel surfaces of a microplate and Frenkel excitons provided by the 2D layers of dye molecular linkers in the MOF. Flexibility in rational selection of dye linkers for synthesizing such MOFs renders a large-scale, low-cost production of solid-state, micro-exciton-polaritonic devices operating in the visible and near-infrared range. Our work introduces MOFs as a new class of potential materials to explore polariton-related quantum phenomena in a cost-effective manner.
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