A high-efficiency and low-cost AEE polyurethane chemo-sensor for Fe3+ and explosives detection

作者：Wang, Kun; Lu, Hao; Liu, Beibei; Yang, Jiping^*

来源：Tetrahedron Letters, 2018, 59(47): 4191-4195.

DOI：10.1016/j.tetlet.2018.10.035

• Fe3+ ion detection
• Explosives detection
• Aggregation-enhanced emission
• Polyurethane
• Tetraaryl-buta-1,3-diene

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.

• 出版日期2018-11-21
• 单位北京航空航天大学