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Synthesis and Investigation of Electrochromic Component Stimuli- Esponsive Based on Aniline Pentamer

Rezaei Zangeneh, Moein | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54015 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Pourjavdi, Ali
  7. Abstract:
  8. The use of polyaniline as an electrochromic conductive polymer was highly regarded. However, due to problems such as poor solubility, the researchers decided to use aniline oligomer as an alternative. Meanwhile, aniline pentamer received more attention due to its good solubility in organic solvents and acceptable conductivity. On the other hand, it is possible to increase the conductivity and also to respond more to stimuli to groups that have certain characteristics. In this study, aniline pentamer and carbazole-derived were used. First, nitro and bromoethanol groups are added to carbazole. Due to its fluorescence properties, carbazole can, in addition to increasing the conductivity, which can control the amount of conductivity by fluorescence. Due to the presence of NH2 group in aniline pentamer, a diazo bond was formed between carbazole and pentamer to create a light-sensitive property, which resulted in a multi-stimulus oligomer (electrochromic, photochromic, etc.). In addition to improving the conductivity properties, this diazotization coupling will increase the solubility, improve the staining power (due to the formation of two groups of nitro and diazo chromophores), increase the stability, etc., which are determined by various tests such as photoluminescence, UV-vis and cyclic voltammetry were investigated for fluorescence, staining and conductivity properties
  9. Keywords:
  10. Carbazole ; Electrochromic ; Multi-Stimulus ; Diazo Bond ; Aniline Pentamer ; Fluorescence ; Paintadhesion ; Conductivity

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