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题名: Synthesis and photophysical behaviors of temperature/pH-sensitive polymeric materials. I. Vinyl monomer bearing 9-aminoacridine and polymers
作者: Guan, XL; Liu, XY(刘兴妤); Su, ZX(苏致兴)
收录类别: SCIE ; EI
出版日期: 2007-07
刊名: EUROPEAN POLYMER JOURNAL
卷号: 43, 期号:7
出版者: ELSEVIER
出版地: OXFORD
英文摘要: A novel acrylic monomer bearing acriclinyl group, acridine-9-N-acrylamide (Ac-9AA) was synthesized from 9-aminoacridine (9AA) and acryloyl chloride in the presence of triethylamine in dry dichloromethane (CCl2) at room temperature. The synthesized Ac-9AA was identified by IR, MS and H-1 NMR spectra. Homopolymer of Ac-9AA was obtained using AIBN as a thermal initiator in THF under 65-70 degrees C and the average molecular weights (M-w) of poly(Ac-9AA) obtained was very low, being in the order of ca. 10(3). Copolymer of Ac-9AA and acrylamide was synthesized with thermal initiator and poly(Ac-9AA-co-AM) was characterized by the method of IR, UV-vis and DSC. The photophysical behaviors of Ac-9AA and its polymers were explored by recording the fluorescence spectra in solution, solid and film. In addition, the pH and temperature dependence on fluorescence of the water-soluble poly(Ac-9AA-co-AM) were investigated in detail. The results showed that the relative fluorescence intensity of poly(Ac-9AA-co-AM) had an excellent linear response to temperature in the range of 0-60 degrees C. Moreover, the fluorescence intensity increased continuously from low pH to high pH while the excitation maxima at 388 nm and emission maxima at 400 nm had redshift after the addition of HCl or NaOH, which results from the fact that the predominance of tautomeric forms of Ac-9AA changed at different medium. This investigation may provide a convenient way to prepared multifunctional macromolecule biomaterial bearing aminoacridine to probe pH and temperature in biological system. (c) 2007 Elsevier Ltd. All rights reserved.
关键词: acridine-9-N-acrylamide ; poly(acridine-9-N-acrylamide) ; poly(acridine-9-N-acrylamide-co-acrylamide) ; fluorescence ; temperature/pH-sensitive
作者部门: Lanzhou Univ, Coll Chem & Chem Engn, Inst Polymer Sci Engn, Lanzhou 730000, Peoples R China
通讯作者: Su, ZX (reprint author), Lanzhou Univ, Coll Chem & Chem Engn, Inst Polymer Sci Engn, Lanzhou 730000, Peoples R China.
学科分类: Polymer Science
文章类型: Article
语种: 英语
DOI: 10.1016/j.eurpolymj.2006.12.014
ISSN号: 0014-3057
WOS记录号: WOS:000248641400034
EI记录号: 20072710694917
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/78410
Appears in Collections:化学化工学院_期刊论文

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Guan, XL; Liu, XY; Su, ZX.Synthesis and photophysical behaviors of temperature/pH-sensitive polymeric materials. I. Vinyl monomer bearing 9-aminoacridine and polymers,EUROPEAN POLYMER JOURNAL,2007,43(7):
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