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.

How to arrive

Forthcoming Events


Strong hybridization of plasmons with charge-transfer modes in subnanometric cavities

Pablo García González  read more


La ciencia en la televisión del futuro
Graziella Almendral   read more


Viscosity of 2D Topological Phases
Barry Bradlyn  read more

Reversible Thermochromic Polymeric Thin Films Made of Ultrathin 2D Crystals of Coordination Polymers Based on Copper(I)-Thiophenolates

Javier Troyano, Oscar Castillo, José I. Martínez, Vanesa Fernández-Moreira, Yolanda Ballesteros, Daniel Maspoch, Félix Zamora and Salome Delgado

A one-pot reaction between Cu(BF4)2·xH2O and 4-mercaptobenzoic acid in acetone or methanol gives rise to the formation of lamellar microcrystals of two Cu(I)-thiophenolate-based coordination polymers (CPs) with the formulas [CuCT] n (1) (CT = 4-carboxy-thiophenolate) and [CuMCT]n (2) (MCT = 4-methoxycarbonyl-thiophenolate). Both 1 and 2 show a reversible luminescent thermochromic behavior upon cooling, changing their color from pale yellow to green to orange in the case of 1, and from pale orange to green in the case of 2. It is shown that the lamellar character of these crystals, which exhibit micrometer lateral dimensions and sub-micrometer/nanometer thicknesses, allows processing them with an organic polymer such as polyvinylidene difluoride (PVDF) to form thermochromic 1@PVDF and 2@PVDF thin films. These thermal stimuli-responsive thin films are freestanding, free of macroscopic defects, and robust under mechanical bending stress, opening up the possibility to use them in, for example, 2D imaging sensor films.

Adv. Funct. Mater.

FESEM morphological analysis for 1 and 2. a) Low-magnification image of 1 microcrystals. b) View of an individual sheet of 1 and (inset) edge view of vertically oriented crystals. c) Low-magnification image of elongated plate-like crystals of 2. d) Edge view of vertically oriented and folded 2 nanosheets, showing their flexibility.

ICMM-2018 - Sor Juana Inés de la Cruz, 3, Cantoblanco, 28049 Madrid, Spain. Tel: +34 91 334 9000. info@icmm.csic.es