Fabrication of Dipole-Aligned Thin Films of Porphyrin J-Aggregates over Large Surfaces
- Adam WeissmanAdam WeissmanDepartment of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, IsraelMore by Adam Weissman
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- Hodaya KlimovskyHodaya KlimovskyDepartment of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, IsraelMore by Hodaya Klimovsky
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- Dor HarelDor HarelDepartment of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, IsraelMore by Dor Harel
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- Racheli RonRacheli RonDepartment of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, IsraelMore by Racheli Ron
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- Martin OheimMartin OheimUniversité de Paris, SPPIN − Saints-Pères Paris Institute for the Neurosciences, CNRS, F-75006 Paris, FranceMore by Martin Oheim
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- Adi Salomon*Adi Salomon*E-mail: [email protected]Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, IsraelMore by Adi Salomon
Abstract
We report a new approach for large-scale alignment of micron-sized J-aggregates of a derivative of porphyrin onto planar glass substrates. We applied a unidirectional nitrogen flow to an aqueous dye drop deposited onto a glass substrate to form an about 5 nm thick film of aligned J-aggregates over macroscopic surface areas up to several millimeters. The inter-aggregate distance is ∼500 nm, and it scales with the nitrogen pressure. We verified the film thickness and J-aggregate alignment using multimodal microscopy and spectroscopy techniques. Our technique is fast, simple, and cost-effective for producing large two-dimensional (2-D) arrays of aligned emitters.
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