کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
591932 | 1453887 | 2015 | 6 صفحه PDF | دانلود رایگان |
• The RB-doped alumina sol was used to prepare dip-coated film.
• In the concentrated sol H-dimers are formed whereas in the corresponding film J-dimers prevail.
• As the dip-coated films exposed to high humidity environment and isopropanol vapor, J-dimer to H-dimer transition and J-dimer dissociation are observed respectively.
The alumina sol doped with rhodamine B (RB) was concentrated to different degree and then dip-coated to prepare thin film. Dimerization of RB happens in the concentrated sol and the dip-coated thin film. As the sol concentrated, H-dimers are presented whereas in the dip-coated film J-dimers are displayed. When the dip-coated film is exposed to high humidity environment, J-dimer will transfer to H-dimer. Put the film in isopropanol vapor, J-dimer dissociates to monomer.
Dimer formation, transformation, and dissociation in dip-coated film.Figure optionsDownload as PowerPoint slide
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 486, 5 December 2015, Pages 139–144