Convenient and highly effective fluorescence sensing for Hg2+ in aqueous solution and thin film.
A quinolinocyclodextrin, that is, MQAS-beta-cyclodextrin (MQAS = N-(2-methyl-8-amino- quinolyl)-p-aminobenzene sulfonamide) was synthesized. Further experiments showed that it could form very stable stoichiometric 2:1 complex with Zn(2+) in water. Significantly, the resultant quinolinocyclodextrin/Zn(2+) complex showed the specific fluorescence response to Hg(2+) over other metal ions, which could be readily distinguished in either aqueous solution or the PVA-based thin film. This finding would enable Zn x 3(2) complex as a convenient and highly efficient fluorescence sensor for the detection of Hg(2+).
Liu
Yu
Y
Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China. yuliu@nankai.edu.cn
Yu
Miao
M
Chen
Yong
Y
Zhang
Ning
N
D003505:Cyclodextrins / Q000138:chemical synthesis* / Q000737:chemistry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry; D008628:Mercury / Q000032:analysis*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D012996:Solutions; D013050:Spectrometry, Fluorescence; D013499:Surface Properties; D015032:Zinc / Q000737:chemistry*
D003505:Cyclodextrins; D005456:Fluorescent Dyes; D009942:Organometallic Compounds; D012996:Solutions; D008628:Mercury; D015032:Zinc