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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: NATURE COMMUNICATIONS; v. 8, DEC 15 2017.
• Citações Web of Science: 19

Resumo

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)

• Processo FAPESP: 12/09719-5 - Dispositivos eletrônicos baseados em polímeros de coordenação contendo diimidas aromáticas como ligantes
• Beneficiário: Evandro Castaldelli
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 11/22379-6 - Polímeros de coordenação contendo diimidas aromáticas como ligantes e suas propriedades ópticas, fotofísicas e fotoeletroquímicas
• Beneficiário: Evandro Castaldelli
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/12666-1 - Propriedades químicas e físicas de bambus[n]urilas, hemi-cucurbiturilas e calix[4]azulenos: três cavitandos negligenciados
• Beneficiário: Grégoire Jean-François Demets
• Modalidade de apoio: Auxílio à Pesquisa - Regular