Electrical semiconduction modulated by light in a cobalt and naphthalene diimide metal-organic framework

Author(s)

Castaldelli, Evandro ^{[1, 2]} ; Jayawardena, K. D. G. Imalka ^[1] ; Cox, David C. ^[1] ; Clarkson, Guy J. ^[3] ; Walton, Richard I. ^[3] ; Le-Quang, Long ^[4] ; Chauvin, Jerome ^[4] ; Silva, S. Ravi P. ^[1] ; Demets, Gregoire Jean-Francois ^[2]

Affiliation

^[1] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey - England

^[2] Univ Sao Paulo, FFCLRP, Dept Quim, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

^[3] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands - England

^[4] Univ Grenoble Alpes, CIRE DCM, CS 40700, F-38058 Grenoble 9 - France

• Document type: Journal article
• Source: NATURE COMMUNICATIONS; v. 8, DEC 15 2017.
• Web of Science Citations: 19

Abstract

Metal-organic frameworks (MOFs) have emerged as an exciting class of porous materials that can be structurally designed by choosing particular components according to desired applications. Despite the wide interest in and many potential applications of MOFs, such as in gas storage, catalysis, sensing and drug delivery, electrical semiconductivity and its control is still rare. The use and fabrication of electronic devices with MOF-based components has not been widely explored, despite significant progress of these components made in recent years. Here we report the synthesis and properties of a new highly crystalline, electrochemically active, cobalt and naphthalene diimide-based MOF that is an efficient electrical semiconductor and has a broad absorption spectrum, from 300 to 2500 nm. Its semiconductivity was determined by direct voltage bias using a four-point device, and it features a wavelength dependant photoconductive-photoresistive dual behaviour, with a very high responsivity of 2.5 x 105AW(-1). (AU)

• FAPESP's process: 12/09719-5 - Electronic devices based on metal-organic frameworks bearing aromatic diimides as ligands
• Grantee: Evandro Castaldelli
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 11/22379-6 - Metal-organic frameworks bearing aromatic diimides as ligands and their optical, photophysical and photoelectrochemical properties
• Grantee: Evandro Castaldelli
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 16/12666-1 - Chemical and physical properties of bamabusurils, semi-cucurbiturils and calix4azulenes: three neglected cavitands
• Grantee: Grégoire Jean-François Demets
• Support Opportunities: Regular Research Grants