Halogen-Bond-Assisted Photoluminescence Modulation in Carbazole-Based Emitter

Halogen bonding between a carbazole-based, pyridine-substituted organic semiconductor and a common halogen-bond donor (pentafluoroiodobenzene) yields efficient halogen-bond-driven fluorescence modulation in solution. Steady-state, time-resolved emission and absorption spectroscopy as well as density...

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Bibliographic Details
Published in:Scientific reports 2018-09, Vol.8 (1), p.14431-8, Article 14431
Main Authors: Salunke, Jagadish K., Durandin, Nikita A., Ruoko, Tero-Petri, Candeias, Nuno R., Vivo, Paola, Vuorimaa-Laukkanen, Elina, Laaksonen, Timo, Priimagi, Arri
Format: Article
Language:English
Subjects:
119/118
140/125
140/131
639/638/440/527/1819
639/638/541/963
Absorption spectroscopy
Carbazole
Fluorescence
Humanities and Social Sciences
multidisciplinary
Photons
Pyridines
Science
Science (multidisciplinary)
Solvents
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Summary:Halogen bonding between a carbazole-based, pyridine-substituted organic semiconductor and a common halogen-bond donor (pentafluoroiodobenzene) yields efficient halogen-bond-driven fluorescence modulation in solution. Steady-state, time-resolved emission and absorption spectroscopy as well as density functional theory studies demonstrate that the fluorescence modulation arises from halogen-bond-induced intramolecular charge transfer. Fluorescence modulation offers a range of possibilities both in solution and in the solid state, for instance providing a potential pathway for the design of tunable luminescent materials for light-emitting devices.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-32830-3