Pangannaya Srikala, Purayil Neethu Padinchare, Dabhi Shweta, Mankad Venu, Jha Prafulla K, Shinde Satyam, Trivedi Darshak R
Supramolecular Chemistry Laboratory, Department of Chemistry, National Institute of Technology Karnataka (NITK), Surathkal, India.
Department of Physics, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar 364001, India.
Beilstein J Org Chem. 2017 Feb 6;13:222-238. doi: 10.3762/bjoc.13.25. eCollection 2017.
New colorimetric receptors and with varied positional substitution of a cyano and nitro signaling unit having a hydroxy functionality as the hydrogen bond donor site have been designed, synthesized and characterized by FTIR, H NMR spectroscopy and mass spectrometry. The receptors and exhibit prominent visual response for F and AcO ions allowing the real time analysis of these ions in aqueous media. The formation of the receptor-anion complexes has been supported by UV-vis titration studies and confirmed through binding constant calculations. The anion binding process follows a first order rate equation and the calculated rate constants reveal a higher order of reactivity for AcO ions. The H NMR titration and TDDFT studies provide full support of the binding mechanism. The Hg and F ion sensing property of receptor has been utilized to arrive at "AND" and "INHIBIT" molecular logic gate applications.
已设计、合成了具有羟基官能团作为氢键供体位点的新型比色受体，该受体带有氰基和硝基信号单元的不同位置取代，并通过傅里叶变换红外光谱、核磁共振氢谱和质谱对其进行了表征。这些受体对F⁻和AcO⁻离子表现出显著的视觉响应，可对水介质中的这些离子进行实时分析。紫外-可见滴定研究支持了受体-阴离子配合物的形成，并通过结合常数计算得到了证实。阴离子结合过程遵循一级速率方程，计算得到的速率常数表明AcO⁻离子具有更高的反应活性。核磁共振氢谱滴定和含时密度泛函理论研究为结合机理提供了充分支持。受体的Hg²⁺和F⁻离子传感特性已被用于实现“与”和“抑制”分子逻辑门应用。
