Turn-on fluorescence sensor for mono- and di-phosphonic acid derivatives using anthracene-based diamidine and its detection of amidinium-phosphonate and amidinium formation
di-phosphonic acid and mono-phosphonic acid derivatives using the anthracene-based diamidine 1 has been investigated. The diamidine 1 forms 1:1 and 1:2 complexes with the di-phosphonic acid and mono-phosphonic acid derivatives, respectively, and showed a blue fluorescence (λem = 432–442 nm) in a DMSO solution. The formation of amidinium-phosphonate (complexformation) and dissociated amidinum (λem = 468 nm as a
使用基于蒽二脒二膦酸和单-膦酸衍生物的荧光检测1进行了研究。的二脒1种形式1:1和1:2个络合物分别与二膦酸和单-膦酸衍生物,并呈现出蓝色荧光(λ EM 中的DMSO溶液= 432-442纳米)。脒鎓膦酸酯(复合物形成)和离解amidinum的形成(λ EM = 468纳米作为宽带)通过在荧光波长的差异区分,并且通过DOSY NMR光谱和TD-DFT计算证实。与二am 1形成1:2络合物 提出了在甲基膦酸之间具有另外的分子间氢键的甲基膦酸。
Recognition of carboxylic acids and phosphonic acids using 1,8-diphenylnaphthalene-based diguanidine
addition of 1,3-benzenediacetic acids 3. However, after the addition of other types of aliphatic dicarboxylic acids, such as α,ω-dicarboxylic acids, only a weak yellowish fluorescence was observed and selective recognition of the 1,3-benzenediacetic acids 3 was developed. On the other hand, for the recognition of diphosphonic acid derivatives (5–7), a light blue, blue or pinkish fluorescence was observed