Supramolecular Light‐Harvesting Antennas of Metal‐Coordinated Bis(8‐Hydroxyquinoline)‐Substituted Porphyrin Networks

• Published in: Chemistry, an Asian journal Vol. 14; no. 15; pp. 2567 - 2572
• Main Authors: Fujimoto, Junko, Hayashi, Sari, Kainuma, Hideyuki, Manseki, Kazuhiro, Udagawa, Taro, Miyaji, Hidekazu
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.08.2019
• Subjects: 8-hydroxyquinoline; Antennas; artificial photosynthesis; biomimetics; Chemistry; Chromophores; Coordination compounds; Hydroxyquinoline; light-harvesting antenna; Networks; Photoelectric effect; Photoelectric emission; Photoelectrochemical devices; porphyrin; Substitutes; Titanium; Titanium dioxide; artificial photosynthesis; porphyrin; 8-hydroxyquinoline; biomimetics; light-harvesting antenna
• ISSN: 1861-4728; 1861-471X
• DOI: 10.1002/asia.201900483

Artificial antenna complexes of metal‐coordinated bis(8‐hydroxyquinoline)‐substituted porphyrin networks that mimic antenna chromophores in plants were organized on titanium dioxide electrodes in photoelectrochemical cells. The generated photocurrents can be optimized according to the two ways of porphyrin self‐assembly due to the “antenna effect”: changing the number of assembled porphyrin monolayers and the number of generations of the metal‐coordinated porphyrin networks. Totally artificial: Artificial antenna complexes of metal‐coordinated bis(8‐hydroxyquinoline)‐substituted porphyrin networks that mimic the antenna complex of plants were organized on a titanium oxide electrode, and their antenna functions were evaluated by photo‐electrochemical method. The photocurrent was improved by an increase in the number of layers or generations of the metal‐coordinated porphyrin networks due to the antenna effect.