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Metal-organic frameworks bearing aromatic diimides as ligands and their optical, photophysical and photoelectrochemical properties

Grant number: 11/22379-6
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2012
Effective date (End): January 27, 2016
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
Principal Investigator:Grégoire Jean-François Demets
Grantee:Evandro Castaldelli
Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
Associated scholarship(s):12/09719-5 - Electronic devices based on metal-organic frameworks bearing aromatic diimides as ligands, BE.EP.DR


1,4,5,8-naphthalene and 3,4,9,10-perylene diimides are organic compounds that possess rich optical and electronic properties and both thermal and chemical stability. They are easily synthesized or modified and are suitable ligands for transition metal complexes or metal-organic frameworks. These frameworks have long-distance organization with many different organizations and geometries which can be tuned according to the metal center or reaction conditions. Usually they have nanosized pores within their regular structure that make them excellent at selective adsorption of gases such as CO2 and N2. Metal-organic frameworks bearing aromatic diimides as ligands show selective adsorption of gases and are luminescent and electrochemically active as well. In theory, they can even form structures that behave like synthetic metals but there is still a lack of unified studies exploring their optical and electronic properties. Hence, the aim of the project is to synthesize, characterize and to systematically study metal-organic frameworks using 1,4,5,8-naphthalene and 3,4,9,10-perylene diimides with different metal centers which can provide desirable properties, such as cobalt, ruthenium, copper, platinum and silver. These compounds can be synthesized using known methods such as the condensation of the diimide dianhydrides with amines and the metal-organic frameworks can self-assemble under appropriated conditions. This work also aims to study the application of these compounds as optical or electrochemical sensors and as components of electrical devices such as transistors and solar cells.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
KING, SIMON G.; CASTALDELLI, EVANDRO; MCCAFFTERTY, LIAM; SILVA, S. RAVI P.; STOLOJAN, VLAD. Micro-Centrifugal Technique for Improved Assessment and Optimization of Nanomaterial Dispersions: The Case for Carbon Nanotubes. ACS APPLIED NANO MATERIALS, v. 1, n. 11, p. 6217-6225, . (12/09719-5, 11/22379-6)
CASTALDELLI, EVANDRO; JAYAWARDENA, K. D. G. IMALKA; COX, DAVID C.; CLARKSON, GUY J.; WALTON, RICHARD I.; LE-QUANG, LONG; CHAUVIN, JEROME; SILVA, S. RAVI P.; DEMETS, GREGOIRE JEAN-FRANCOIS. Electrical semiconduction modulated by light in a cobalt and naphthalene diimide metal-organic framework. NATURE COMMUNICATIONS, v. 8, . (12/09719-5, 11/22379-6, 16/12666-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CASTALDELLI, Evandro. Coordination polymers based on cobalt(II) and N,N\'-bis(4-pyridyl)-1,4,5,8-naphthalene diimide as ligand and their structural, spectroscopic and electronic properties. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (PCARP/BC) Ribeirão Preto.

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