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Wang L, Wei W, Guo Y, Xu J, Shao S. Nitro-substituted 3,3′-bis(indolyl)methane derivatives as anion receptors: Electron-withdrawing effect and tunability of anion binding properties. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 2011 Feb;78(2):726–31. doi: 10.1016/j.saa.2010.12.004. |