Journal
TETRAHEDRON LETTERS
Volume 59, Issue 47, Pages 4191-4195Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2018.10.035
Keywords
Fe3+ ion detection; Explosives detection; Aggregation-enhanced emission; Polyurethane; Tetraaryl-buta-1,3-diene
Categories
Funding
- National Natural Science Foundation of China [21574003]
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An aggregation enhanced emission (AEE) polyurethane named STMPU-211 containing 0.13% mole con- centration of 4,4'4(1Z,3Z)-1,4-diphenylbuta-1,3-diene-1,4-diyl) dibenzaldehyde (TABDAA) in the soft segments was synthesized and proved to be sensitive to Fe3+ and nitroaromatic explosives. The fluorescence of the AEE polyurethane was reduced in the presence of Fe3+, and almost quenched when 5000 mu M Fe3+ was added. Meanwhile, the fluorescence intensity of STMPU-211 solution in DMF/water mixture was decreased when explosives like 2,4,6-trinitrophenol (PA) and 3-nitro-1,2,4-triazol-5-one (NTO) were applied. Especially, the quenching coefficient K-sv value of PA was 5.7 x 10(6) M-1, confirming that the polyurethane STMPU-211 could be a highly sensitive sensor for the detection of PA. Therefore, AEE polyurethanes with low concentration of TABDAA have promising applications in biological probe, environment monitoring and antiterrorism fields. (C) 2018 Elsevier Ltd. All rights reserved.
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