Novel,N-ethyl-2-styrylquinolinum iodides as fluorophores for monitoring of polymerization process,Part I |
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| Authors: | Agnieszka Bajorek Janina Kabatc Jerzy P?czkowski |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China;2. Department of Chemistry and Material Sciences, Hubei Engineering University, Xiaogan 432000, PR China;3. College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, PR China;1. Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang, Jiangxi, 330031, China;2. School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China;3. College of Chemistry, Nanchang University, Nanchang, Jiangxi, 330031, China;4. College of Chemistry and Environmental Engineering and Jiujiang Key Laboratory of Basin Management and Ecological Protection, Jiujiang University, Jiujiang, Jiangxi, 332005, China;1. School of Chemical Engineering and Light Industry, School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, PR China;2. The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou 510700, PR China;3. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, PR China;4. School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, PR China;5. The State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China |
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| Abstract: | A series of of p-substituted 2-styrylquinolinium iodides were prepared by the condensation of N-ethyl-2-methylquinolinium salts with p-substituted benzaldehydes. The spectroscopic properties of the styryl quinolinium dyes are characterized in organic solvents of varying polarities. The electronic absorption and fluorescence emission spectra of the dyes demonstrate their high sensitivity to the nature of substituents introduced into the aromatic ring. The dyes were investigated as fluorescent probes for monitoring the progress of the photochemically initiated free-radical polymerization of a mixture of 2-ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate and 1-methyl-2-pyrrolidinone. During the course of the polymerization an increase in the fluorescence intensity of the dyes by at least one order of magnitude was recorded; a feature which renders the dyes as good fluorescent probes for such polymerization reactions. The term “probe sensitivity” has been defined and appears in the range from 0.08 to 11 for the styryl dyes. |
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