Synthesis of a Dehydroabietyl Derivative Bearing a 2-(2′-Hydroxyphenyl) Benzimidazole Unit and Its Selective Cu2+ Chemosensing

Molecules

Ying-Chun Wang¹  Lu-Zhi Liu¹  Ying-Ming Pan¹ 

[1] ¹College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, Hunan Province, China ²Key Laboratory of Medicinal Chemical Resources and Molecular Engineering, College of Chemistry and Chemical Enginesering, Guangxi Normal University, Guilin 541004, Guangxi Province, China

关键词: dehydroabietic acid;    absorption;    fluorescence;    copper;    metal-ion recognition;   

DOI  :  10.3390/molecules16010100

来源: mdpi

【 摘 要 】

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 Cu²⁺ was found to be stoichiometric with the formation of a 1:1 complex.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.