Details

Autor(en) / Beteiligte

• Liu, Li Hua
• Li, Wen Bin
• Gao, Fei
• Huo, Tian Rui

Titel

Adduct of magnesium tetraphenylporphyrin with aniline for colorimetric detection of SO2

Ist Teil von

• Chinese chemical letters, 2012-02, Vol.23 (2), p.208-212

Ort / Verlag

College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• O621.2; Adduct of magnesium tetraphenylporphyrin (MgTPP) with aniline for colorimetric detection of SO2.was investigated in CH2Cl2 by steady-state fluorescence and UV-vis absorption spectroscopic techniques.The UV-vis spectra showed that the increasing aniline concentrations resulted in red shift of 3 nm for MgTPP Soret absorption band.Once introduced,SO2 competes with MgTPP for aniline,which eventually leads to the release of MgTPP and changes in the solution color/absorption.The fluorescence spectra suggested that MgTPP interacted with aniline to form 1∶1 molecular adducts,and showed that the binding of MgTPP with aniline with the binding constants of 1.58-1.64 is not only endothermal but entropy-driven with △H=1.622 kJ mol -1,△S=9.389 J mol-1 K -1,and △G=-1.585 kJ mol -1 at T=298.15 K.