Fabrication of Dipole-Aligned Thin Films of Porphyrin J-Aggregates over Large Surfaces

Adam Weissman, Hodaya Klimovsky, Dor Harel, Racheli Ron, Martin Oheim, Adi Salomon

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish
Pages (from-to)844-851
Number of pages8
JournalLangmuir
Volume36
Issue number4
DOIs
StatePublished - 4 Feb 2020

Bibliographical note

Publisher Copyright:
Copyright © 2020 American Chemical Society.

Funding

This work was supported by the European Union (H2020, EUREKA! Eurostars E!113216 "NANOSCALE" to A.S. and M.O.). A.S. acknowledges mobility support from the French Ministry of Foreign Affairs (Chateaubriand Senior Fellowship) and the French Agence Nationale de la Recherche (ANR-10-INSB-04-01, grands investissements FranceBioImaging, FBI, to M.O. équipements FranceBioImaging). M.O. and A.S. were supported by the CNRS (LIA France-Israel ImagiNano) and the Region Ile de France (Nanotechnology Excellence Cluster DIM C'Nano). This work was supported by the European Union (H2020, EUREKA! Eurostars E!113216 “NANOSCALE”, to A.S. and M.O.). A.S. acknowledges mobility support from the French Ministry of Foreign Affairs (Chateaubriand Senior Fellowship) and the French Agence Nationale de la Recherche (ANR-10-INSB-04-01, grands investissements FranceBioImaging, FBI, to M.O. équipements FranceBioImaging). M.O. and A.S. were supported by the CNRS (LIA France-Israel ImagiNano) and the Region Ile de France (Nanotechnology Excellence Cluster DIM C’Nano).

FundersFunder number
Region Ile de France
Horizon 2020 Framework Programme113216
Federal Bureau of Investigation
European Commission
Agence Nationale de la RechercheANR-10-INSB-04-01
Ministère des Affaires Etrangères
Centre National de la Recherche Scientifique

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