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

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2017
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Language
en
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7
1-7
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Scientific Reports, Volume 7
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.
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Pale , V , Giedraityte , Z , Chen , X , Lopez Acevedo , O , Tittonen , I & Karppinen , M 2017 , ' Excitation-dependent fluorescence from atomic/molecular layer deposited sodium-uracil thin films ' , Scientific Reports , vol. 7 , 6982 , pp. 1-7 . https://doi.org/10.1038/s41598-017-07456-6