synthesis of a dehydroabietyl derivative bearing a 2-(2′-hydroxyphenyl) benzimidazole unit and its selective cu2+ chemosensingdehydroabietyl导轴承的合成2 -(2u2032羟苯基)苯并咪唑单元及其选择性cu2 +化学感受.pdfVIP

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synthesis of a dehydroabietyl derivative bearing a 2-(2′-hydroxyphenyl) benzimidazole unit and its selective cu2+ chemosensingdehydroabietyl导轴承的合成2 -(2u2032羟苯基)苯并咪唑单元及其选择性cu2 +化学感受.pdf

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synthesisofadehydroabietylderivativebearinga2-(2′-hydroxyphenyl)benzimidazoleunitanditsselectivecu2chemosensingdehydroabietyl导轴承的合成2-(2u2032羟苯基)苯并咪唑单元及其选择性cu2化学感受

Molecules 2011, 16, 100-106; doi:10.3390/molecule OPEN ACCESS molecules ISSN 1420-3049 /journal/molecules Article Synthesis of a Dehydroabietyl Derivative Bearing a 2-(2′-Hydroxyphenyl) Benzimidazole Unit and Its Selective Cu2+ Chemosensing Ying-Chun Wang 1, Lu-Zhi Liu 2, Ying-Ming Pan 2 and Heng-Shan Wang 2,* 1 College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, Hunan Province, China; E-Mail: wang_yingchun2010@ (Y-C.W.) 2 Key Laboratory of Medicinal Chemical Resources and Molecular Engineering, College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi Province, China; E-Mails: liuluzhi2010@ (L.-Z.L.); panym2004@ (Y.-M.P.) * Author to whom correspondence should be addressed; E-Mail: wang_hengshan@; Tel.: +86-773-212-0958; Fax: +86-773-212-0958 Received: 17 November 2010; in revised form: 9 December 2010 / Accepted: 16 December 2010 / Published: 28 December 2010 Abstract: A dehydroabietyl derivative 2 bearing a 2-(2′-hydroxyphenyl)benzimidazole unit was synthesized and its sensing behaviors toward metal ions were investigated by UV-Vis and fluorescence spectroscopy methods. In THF solution, compound 2 exhibited excellent selectivity for Cu(II) over miscellaneous other metal ions including Cr(II), Mn(II), Co(II), Ni(II), Zn(II), Cd(II), Al(III), Mg(II), Pb(II), Hg(II), Na(I), Li(I) and K(I) evidenced through the quenching of the fluorescence of the benzimidazole fragment. The reaction between 2 and C