New paper in Ultrasonics Sonochemistry – Solvent-tuned ultrasonic synthesis of 2D nanostructures

New paper in Ultrasonics Sonochemistry – Solvent-tuned ultrasonic synthesis of 2D nanostructures

24 Dec 2020

New publication in Ultrasonics Sonochemistry journal entitled “Solvent-tuned ultrasonic synthesis of 2D coordination polymer nanostructures and flakes” authored by our former Master student Belén Pepió as a first author and in collaboration with Prof. Ali Morsali from Tarbiat Modares University (Iran).

In this work, the authors reported how the solvent-sonication combination can not only favour the delamination process but also to trigger new reactions and the obtaining of novel chemical nanostructures, otherwise difficult to achieve. In brief, crystals of the novel CP {Cu2(L)(DMF)2}n have been obtained and later on exfoliated into thin flakes. Further resuspensions such flakes in water results in a chemical transformation into rod-shaped nanocrystals and nanospheres.

ABSTRACT: Herein, a new 2-dimensional coordination polymer based on copper (II), {Cu2(L)(DMF)2}n, where L stands for 1,2,4,5-benzenetetracarboxylate (complex 1) is synthesized. Interestingly, we demonstrate that both solvent and sonication are relevant in the top-down fabrication of nanostructures. Water molecules are intercalated in suspended crystals of complex 1 modifying not only the coordination sphere of Cu(II) ions but also the final chemical formula and crystalline structure obtaining {[Cu(L)(H2O)3]·H2O}n (complex 2). On the other hand, ultrasound is required to induce the nanostructuration. Remarkably, different morphologies are obtained using different solvents and interconversion from one morphology to another seems to occur upon solvent exchange. Both complexes 1 and 2, as well as the corresponding nanostructures, have been fully characterized by different means such as infrared spectroscopy, x-ray diffraction and microscopy.

Enjoy our article!