About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Hybrid Organic-Inorganic Materials for Alternative Energy
|
| Presentation Title |
N-11: Reducing Interfacial Impedance at the Metal-Organic Molecule Joint via Electrografting |
| Author(s) |
Camila Jaillita, Henrique De Aguiar Minami, Jorge Seminario, Noe Alvarez |
| On-Site Speaker (Planned) |
Camila Jaillita |
| Abstract Scope |
Diazonium grafting is a technique that allows chemical bonding of organic molecules onto multiple metal and carbon substrates. Selected grafted organics can form covalent bonds to metal atoms on substrates and alter their physical properties of surfaces at the molecular level, causing changes in their interfacial response to the electrolytes in the medium. However, due to the high reactivity of most diazonium salts, the formation of multilayer grafted molecules negatively affects the impedance at the interface. This project is about reducing the impedance and understanding the effects of different functional groups in aryl diazonium salts- metal interface. We aim to demonstrate that amino phenyl diazonium, compared to nitrobenzene diazonium grafted on gold substrates, lowers the barrier to charge transport and reduces the impedance when maintaining thin layers and high surface coverage. This has been achieved by controlling parameters related to the radical formation, overpotential, and deposition time. |