在DMSO–H 2 O混合溶剂中研究了维生素B 6辅因子吡ido醛(L)的易于制备且结构平面的席夫碱衍生物的聚集诱导发射(AIE)特性。化合物大号呈弱荧光(λ EM = 425纳米)在纯DMSO,但增加水的分数在DMSO由于分子内的旋转(RIR)的限制导致在575纳米的显著荧光增强大号时凝集。SEM分析显示L的毛状胶束状或针状自组装/聚集体的形成。进行DFT计算以检验L的趋势形成自聚集体,结果表明形成了一些分子内非共价相互作用,从而强烈促进了L的自聚集。pH感测研究表明,在碱性pH值下,L聚集体的pH值为5.9至9.0的红色发射变为绿色,估计的p K a值为9.39和10.22。此外,将L的聚集体用于无孔载玻片上的潜在指纹(LFP)的可视化。
Fluorescent Turn-On Sensing of Zinc(II) and Alkaline Phosphatase Activity Using a Pyridoxal-5’-Phosphate Derived Schiff Base
作者:Amit Kumar、Yachana Upadhyay、Rati Kanta Bera、Suban K. Sahoo
DOI:10.1007/s10895-023-03254-8
日期:2023.11
A novel Zn2+ ion and alkaline phosphatase (ALP) selective fluorescence turn-on sensor L was developed by reacting pyridoxal 5’-phosphate (PLP) with hydrazine. Sensor L shows significant flurescence enhancement at 476 nm due to the formation of a L-Zn2+ complex in 1:1 binding stoichiometry with the association constant of 3.1⋅104 M− 1. Using L, the concentration of Zn2+ can be detected down to 2.34
Sahoo, Suban K.; Sharma, Darshna; Bothra, Shilpa, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 2016, vol. 55A, # 1, p. 44 - 50
作者:Sahoo, Suban K.、Sharma, Darshna、Bothra, Shilpa、Roy, Sutapa Mondal、Kumar, Rajender、Ashok Kumar、Nandre, Jitendra P.、Patil, Umesh D.、Callan, John F.
DOI:——
日期:——
An aggregation-induced emission active vitamin B6 cofactor derivative: application in pH sensing and detection of latent fingerprints
作者:Vinita Bhardwaj、Anand Thangaraj、Seshu Varddhan、S. K. Ashok Kumar、Guido Crisponi、Suban K. Sahoo
DOI:10.1039/d0pp00262c
日期:2020.10
Aggregation-induced emission (AIE) properties of an easy-to-prepare and structurally planar Schiff base derivative of the vitaminB6 cofactor pyridoxal (L) were investigated in DMSO–H2O mixed solvents. Compound L showed weak fluorescence (λem = 425 nm) in pure DMSO, but increasing the fraction of water in DMSO resulted in a significant fluorescence enhancement at 575 nm due to the restriction of intramolecular
在DMSO–H 2 O混合溶剂中研究了维生素B 6辅因子吡ido醛(L)的易于制备且结构平面的席夫碱衍生物的聚集诱导发射(AIE)特性。化合物大号呈弱荧光(λ EM = 425纳米)在纯DMSO,但增加水的分数在DMSO由于分子内的旋转(RIR)的限制导致在575纳米的显著荧光增强大号时凝集。SEM分析显示L的毛状胶束状或针状自组装/聚集体的形成。进行DFT计算以检验L的趋势形成自聚集体,结果表明形成了一些分子内非共价相互作用,从而强烈促进了L的自聚集。pH感测研究表明,在碱性pH值下,L聚集体的pH值为5.9至9.0的红色发射变为绿色,估计的p K a值为9.39和10.22。此外,将L的聚集体用于无孔载玻片上的潜在指纹(LFP)的可视化。