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

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Original languageEnglish
Article number14431
JournalScientific Reports
Publication statusPublished - 26 Sep 2018
Publication typeA1 Journal article-refereed


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.

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Field of science, Statistics Finland

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