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Excitation-dependent fluorescence from atomic/molecular layer deposited sodium-uracil thin films

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Abstract

Atomic/molecular layer deposition (ALD/MLD) offers unique possibilities in the fabrication of inorganic-organic thin films with novel functionalities. Especially, incorporating nucleobases in the thin-film structures could open new avenues in the development of bio-electronic and photonic devices. Here we report an intense blue and widely excitation-dependent fluorescence in the visible region for ALD/MLD fabricated sodium-uracil thin films, where the crystalline network is formed from hydrogen-bonded uracil molecules linked via Na atoms. The excitation-dependent fluorescence is caused by the red-edge excitation shift (REES) effect taking place in the red-edge of the absorption spectrum, where the spectral relaxation occurs in continuous manner as demonstrated by the time-resolved measurements.
Original languageEnglish
Article number6982
Pages (from-to)1-7
Number of pages7
JournalScientific Reports
Volume7
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

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    • Novel hybrid materials by ALD/MLD: from fundamentals towards applications

      Karppinen, M. (Principal investigator), Revitzer, H. (Project Member), Multia, J. (Project Member), Khayyami, A. (Project Member), Sederholm, L. (Project Member), Aleksandrova, I. (Project Member), Ghazy, A. (Project Member), Medina, E. (Project Member), Tiittanen, T. (Project Member), Thomas, C. (Project Member), Haggren, A. (Project Member), Mustonen, O. (Project Member), Madadi, M. (Project Member) & Johansson, L.-S. (Project Member)

      01/09/2016 → 31/08/2020

      Project: Academy of Finland: Other research funding

    • Conversion of light to transport fuels through integrated optoelectronic cell factories

      Tittonen, I. (Principal investigator), Vaelma, M. (Project Member), See, E. (Project Member), Pale, V. (Project Member), Vänskä, O. (Project Member), Romppainen, H. (Project Member), Hällström, L. (Project Member), Elonsalo, I. (Project Member), Tossi, C. (Project Member), Koskinen, T. (Project Member) & Selin, J. (Project Member)

      01/01/2015 → 31/12/2018

      Project: Academy of Finland: Other research funding

    • Molecular-Layer-Engineered Inorganic-Organic Hybrid Materials

      Karppinen, M. (Principal investigator), Johansson, L.-S. (Project Member), Hagen, D. (Project Member), Medina, E. (Project Member), Tripathi, T. (Project Member), Lepikko, S. (Project Member), Tenhunen, M. (Project Member), Multia, J. (Project Member), Haggren, A. (Project Member), Puikkonen, P. (Project Member), Jin, H. (Project Member), Niemelä, J.-P. (Project Member), Vähä-Pietilä, E. (Project Member), Krahl, F. (Project Member), Matikainen, A. (Project Member), Heiska, J. (Project Member), Khayyami, A. (Project Member), Tiittanen, T. (Project Member), Mustonen, O. (Project Member), Aleksandrova, I. (Project Member), Stenholm, M. (Project Member), Thomas, C. (Project Member), Nisula, M. (Project Member), Marin, G. (Project Member), Giedraityte, Z. (Project Member), Ghazy, A. (Project Member), Chou, T.-L. (Project Member), Philip, A. (Project Member), Safdar, M. (Project Member) & Ahvenniemi, E. (Project Member)

      23/12/2013 → 31/01/2019

      Project: EU: ERC grants

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