Synthesis, Crystal Structure, Spectral and Thermodynamic Properties of One Benzoindole Pentamethine Cyanine Dye
作者： Xiu-Fu Zhang , Jun-Long Zhao , Wei-Bin Bi , Dan-Dan Zhang , Zhi-Yuan Yang
关键词:
摘要: One benzoindole pentamethine cyanine dye was synthesized and characterized by 1H NMR, IR, MS UV-Vis spectra. The absorption fluorescence spectra of the in chloroform, dimethyl sulfoxide, acetone, ethanol methanol were investigated, λmax region 682.0–689.0 nm with large molar extinction coefficients (ϵ > 105 M−1cm−1) different solvents. structure also analyzed X-ray diffraction. Crystallographic data revealed that belonged to orthorhombic, space group P212121, a = 10.059(2) A, b 15.098(4) c 24.989(6) V 3794.8(15) A3, Z 4. C-H···F intermolecular hydrogen bonds displayed molecular system, which effective packing. aggregation behavior thermodynamic properties aqueous solution studied means spectroscopy methods. results indicated existed monomer-dimer equilibrium solutions. fundamental dye, such as dimeric association constant KD, free energy ΔGD, entropy ΔSD, enthalpy ΔHD determined. –46.0 kJ mol−1.
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