Detection of Amines and Unprotected Amino Acids in Aqueous Conditions by Formation of Highly Fluorescent Iminium Ions
作者:Ellen K. Feuster、Timothy E. Glass
DOI:10.1021/ja036434m
日期:2003.12.1
coumarin aldehydes can be used to detect amines and amino acids under neutral, high ionic strength conditions by the formation of highly fluorescent iminium ions. The fluorescence of one sensor increases by 26-fold upon the addition of glycine. This strong florescent response is attributed to hydrogen bonding of the chromophore carbonyl by the acidic iminium proton.
适当取代的香豆素醛可通过形成高荧光亚胺离子,在中性、高离子强度条件下检测胺和氨基酸。添加甘氨酸后,一个传感器的荧光增加了 26 倍。这种强烈的荧光响应归因于酸性亚胺鎓质子与生色团羰基的氢键。