Novel oxygen sensor based on terfluorene thin-film and its enhanced sensitivity by stimulated emission

Ter(9,9-diarylfluorene) (TDF) neat film featuring oxygen sensing with advantages of fast response, reversibility and high efficiency is reported. The fast O sub(2) fluorescence quenching process (4.0 10 super(10) M super(-1) s super(-1)) is unique and is mainly due to intact amorphous morphology of...

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Bibliographic Details
Published in:Journal of materials chemistry 2012-01, Vol.22 (27), p.13446-13450
Main Authors: Lin, Hao-Wu, Huang, Ming-Hong, Chen, Yi-Hong, Lin, Wei-Chieh, Cheng, Hsing-Chieh, Wu, Chung-Chih, Chao, Teng-Chih, Wang, Ting-Chih, Wong, Ken-Tsung, Tang, Kuo-Chun, Chou, Pi-Tai
Format: Article
Language:English
Subjects:
Detection
Energy gap
High speed
Lasing
Quenching
Spontaneous emission
Stimulated emission
TDF
Thin films
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Summary:Ter(9,9-diarylfluorene) (TDF) neat film featuring oxygen sensing with advantages of fast response, reversibility and high efficiency is reported. The fast O sub(2) fluorescence quenching process (4.0 10 super(10) M super(-1) s super(-1)) is unique and is mainly due to intact amorphous morphology of the TDF film, providing ample porous sites in nature so that O sub(2) can travel therein freely. This, together with a large S sub(1)-T sub(1) energy gap of TDF, leads to efficient O sub(2) sensitization, i.e.the O sub(2) induced S sub(1)-T sub(1) intersystem crossing. The sensitivity can be further enhanced up to similar to 10-fold and similar to 20-fold in amplified spontaneous emission (ASE) and lasing action, respectively. The work thus demonstrated a new class of organic materials suited for high-speed, high-sensitivity oxygen sensing.
ISSN:0959-9428
1364-5501
DOI:10.1039/c2jm30739a