α-CD/Crown-Appended Diazophenol for Selective Sensing of Amines
摘要:
[GRAPHICS]Azophenol dyes having the permethylated cyclodextrin and/or crown moieties have been synthesized. Compound 1 provides critical information on discriminating 1-3 degrees amines with unique color changes. Addition of 1 degrees and 2 degrees amines to 1 shifts the absorbance maximum of 1 from 380 to similar to 580 and similar to 530 nm, respectively, but no change is observed with 3 degrees amines. The high selectivity of 1 is mainly due to H-bonding between the ammonium H atoms of the amine and oxygen atoms of the crown-6.
α-CD/Crown-Appended Diazophenol for Selective Sensing of Amines
作者:Jong Hwa Jung、Soo Jin Lee、Jong Seung Kim、Woo Song Lee、Yoshiteru Sakata、Takahiro Kaneda
DOI:10.1021/ol060923k
日期:2006.7.1
[GRAPHICS]Azophenol dyes having the permethylated cyclodextrin and/or crown moieties have been synthesized. Compound 1 provides critical information on discriminating 1-3 degrees amines with unique color changes. Addition of 1 degrees and 2 degrees amines to 1 shifts the absorbance maximum of 1 from 380 to similar to 580 and similar to 530 nm, respectively, but no change is observed with 3 degrees amines. The high selectivity of 1 is mainly due to H-bonding between the ammonium H atoms of the amine and oxygen atoms of the crown-6.
A color version of the Hinsberg test: permethylated cyclodextrin and crown-appended azophenol for highly selective sensing of amines
作者:Jong Hwa Jung、Hye Young Lee、Sung Ho Jung、Soo Jin Lee、Yoshiteru Sakata、Takahiro Kaneda
DOI:10.1016/j.tet.2008.05.013
日期:2008.7
have been synthesized. Compounds 1 and 2 provide critical information for discrimination among 1°–3° amines by unique color changes. Addition of 1° and 2° amines to solutions of 1 or 2 in chloroform shifts the absorbance maximum of the initial solutions from 380 nm to ∼580 nm and ∼530 nm, respectively, but no change is observed with 3° amines. The high selectivity of 1 is mainly due to H-bonding between