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

Evandro Castaldelli (), K. D. G. Imalka Jayawardena, David C. Cox, Guy J. Clarkson, Richard I. Walton, Long Le-Quang, Jerôme Chauvin, S. Ravi P. Silva () and Grégoire Jean-François Demets ()
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Evandro Castaldelli: Universidade de São Paulo
K. D. G. Imalka Jayawardena: University of Surrey
David C. Cox: University of Surrey
Guy J. Clarkson: University of Warwick
Richard I. Walton: University of Warwick
Long Le-Quang: CIRE/DCM Université de Grenoble Alpes
Jerôme Chauvin: CIRE/DCM Université de Grenoble Alpes
S. Ravi P. Silva: University of Surrey
Grégoire Jean-François Demets: Universidade de São Paulo

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: 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 × 105 A W−1.

Date: 2017
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DOI: 10.1038/s41467-017-02215-7

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