1991 Fiscal Year Final Research Report Summary
Electrochemical Formation of Organic Thin Films Based on Dyeing with Vat Dyes
| Project/Area Number |
02650578
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
工業物理化学・複合材料
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| Research Institution | Tokyo Institute of Scientific Research (C) |
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Principal Investigator |
SAJI Tetsuo Tokyo Institute of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (60142262)
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| Project Period (FY) |
1990 – 1991
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| Keywords | Vat dyes / Organic Thin Film / Electrochemistry |
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| Research Abstract |
The formation of organic thin films by controlled-potential electrolysis (oxidation) of an aqueous solution containing a leuco form of vat dye, Na_2S_2O_4, 0.1 M NaOH has been studied. Transparent films of five dyes, Indanthren Brilliant Green FFT, Indigo pure, Thren orenge RRTS, Indanthren Blue RS, Indanthren Olive T are formed. The scanning electron micrograph studies show crystal size of the film increases with electrolysis time, and that these films have a uniform thickness. A plot of the amount of the film versus square root of electrolysis time show a good linear relationship, which suggests that the deposition of vat dye is controlled by the diffusion of leuco form of vat dye. The concentration of Na_2S_2O_4 does not affect the rate of film formation.
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