Synthesis and electrochemical studies of ortho-substituted porphyrins

• Main Authors: Shew-Ching CHung, 鍾秀卿
• Other Authors: Yuhlong Oliver Su
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/22009110973059149260

碩士 === 國立暨南國際大學 === 應用化學系 === 97 === We have synthesized free-base porphyrins with nitrophenyl, aniline, 1,3-diphenylurea, and nicotinanilide on the meso-position successfully. The cyclicvoltammetry and spectroelectrochemical studies have also been investigated. By cyclic voltammetry and spectroelectrochemistry studies, the electron-donatinggroup (aniline) would make the reduction potential of the porphyrin ring negatively. Oppositely, the electron-withdrawing group (nitrophenyl, 1,3-diphenylurea,nicotinanilide) made the reduction of the porphyrin positively. With the increasing ofthe meso-substituents, the substituent effect was obvious easily. The effect of internal hydrogen binding on the structure of free-base porphyrins (H2(o-APurea)2(mesityl)2P, H2(o-APnic)2(mesityl)P) also could be observed by Cyclic voltammetry. Key words： porphyrin、Cyclic voltammetry、optically transparent thin-layer electrode (OTTLE)