About

The Instituto de Ciencia de Materiales de Madrid (ICMM) is an institute of the Consejo Superior de Investigaciones Cientificas (CSIC) (Spanish National Research Council) founded in December 1986, that belongs to the Area of Science and Technology of Materials, one of the eight Areas in which the CSIC divides its research activities.

 

Our mission is to create new fundamental and applied knowledge in materials of high technological impact, their processing and their transfer to the productive sectors at local, national and European scales (the true value of materials is in their use), the training of new professionals, and the dissemination of the scientific knowledge.

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Forthcoming Events

SEP29/12:00

Graphene as a membrane: mechanical properties
Cristina Gómez Navarro  read more

OCT05/12:00

Global Science: Exploring the Chemistry and Applications of Metal-Organic Frameworks throughout the World
Kyle E. Cordova  read more

OCT06/12:00

Atomic and nanometer-scale mapping of soft matter-liquid interfaces
Ricardo García  read more

News

Descubierto un segundo anillo en la Nebulosa del Insecto (RTVE). Entrevista a Miguel Santander, grupo de Astrofísica Molecular, ICMM.

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Protagonistas de la ciencia, charla con Pilar López Sancho del ICMM.

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Thermal selectivity of intermolecular versus intramolecular reactions on surfaces

Cirera, B; Gimenez-Agullo, N; Bjork, J; Martinez-Pena, F; Martin-Jimenez, A; Rodriguez-Fernandez, J; Pizarro, AM; Otero, R; Gallego, JM; Ballester, P; Galan-Mascaros, JR; Ecija, D

On-surface synthesis is a promising strategy for engineering heteroatomic covalent nanoarchitectures with prospects in electronics, optoelectronics and photovoltaics. Here we report the thermal tunability of reaction pathways of a molecular precursor in order to select intramolecular versus intermolecular reactions, yielding monomeric or polymeric phthalocyanine derivatives, respectively. Deposition of tetra-aza-porphyrin species bearing ethyl termini on Au(111) held at room temperature results in a close-packed assembly. Upon annealing from room temperature to 275°C, the molecular precursors undergo a series of covalent reactions via their ethyl termini, giving rise to phthalocyanine tapes. However, deposition of the tetra-aza-porphyrin derivatives on Au(111) held at 300°C results in the formation and self-assembly of monomeric phthalocyanines. A systematic scanning tunnelling microscopy study of reaction intermediates, combined with density functional calculations, suggests a [2+2] cycloaddition as responsible for the initial linkage between molecular precursors, whereas the monomeric reaction is rationalized as an electrocyclic ring closure.

Nature Communications 2016

Figure 1: Self-assembly of OETAP on Au(111) after deposition at room temperature.

Publications Highlights

ICMM-2016 - Sor Juana Inés de la Cruz, 3, Cantoblanco, 28049 Madrid, Spain. Tel: +34 91 334 9000. Fax: +34 91 372 0623. info@icmm.csic.es