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Fluorescent Discrimination of Primary Alkyl Amines by Using a Binaphthyl Ladder Polymer
Author(s) -
Hu Lingling,
Wang Yachen,
Duan Pinghui,
Du Yi,
Tian Jun,
Shi Dan,
Wang Xinjing,
Yu Shanshan,
Yu Xiaoqi,
Pu Lin
Publication year - 2018
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201701774
Subject(s) - fluorescence , chemistry , polymer , amine gas treating , monomer , primary (astronomy) , photochemistry , alkyl , aldehyde , tertiary amine , polymer chemistry , organic chemistry , catalysis , physics , quantum mechanics , astronomy
A 1,1′‐binaphthyl‐based ladder polymer containing fused polyaromatic rings and aldehyde groups in its repeating units has been synthesized. In the presence of primary aliphatic amines, this polymer shows fluorescence enhancement at λ = 655 nm with a significant red shift from its original emission wavelength at λ = 585 nm. However, neither fluorescence enhancement nor shift of the emitting wavelength was observed when the polymer was treated with secondary and tertiary amines as well as with an aromatic amine. Thus, this ladder polymer can be used to selectively recognize primary aliphatic amines with ratiometric detection. The fluorescence response of the ladder polymer is also very different from its precursor polymer as well as its monomeric analogue, which do not show fluorescence enhancement towards primary amines.