Cardano, Francesca

Giordani, Silvia

English

Institutional Research Information System University of Turin

Assembly of Pillared Graphene Oxide MesostructuresFrancesca Cardano1,2,  Marco Frasconi3 and Silvia Giordani*1,4 1 1Istituto Italiano di Tecnologia (IIT), Nano Carbon Materials, via Livorno 60, 10144 Turin, Italy.2University of Genoa, Department of Chemistry and Industrial Chemistry, via Dodecaneso 31, 16146 Genoa, Italy.3 University of Padua, Department of Chemical Sciences, via Marzolo 1, 35131 Padua, Italy.4 Dublin City University, School of Chemical Sciences, Glasnevin, Dublin 9, Ireland.E-mail: francesca.cardano@iit.itOVERVIEWDuring the past years brilliant results have been obtained by the assembly of Hybrid  Multilayers’ Graphene Oxide based mesostructures.1,2 The chemical functionalization of GO with molecular pillars, presenting intrinsic properties and defined shape and size, represent the ideal tool for the achievement of these goals.3,4  Here we show 3 different molecular spacers for the development of GO  based structures with particular properties:1. Tetrapod-like amino spacers to create rigid 3D assembly 2. Aldehyde spacers to generate flexible linkers between the layers 3. Azobenzene spacers to havephoto-controllable materials.GO and TKAm *Pores’ Size SSAONGOING PROJECTS _Flexible assemblies_Aldehyde linkers__Photoresponsive assemblies_Azobenzenes_CONCLUSIONSThese materials show precise distance of the GO layers, specific pores’ size, high surface area, and the eventual possibility to control their properties withexternal stimuli. These peculiarities pave the way for applications in several research fields: from energy storage purposes and membrane preparation toapplications in the biological realm.• Interlayer distance up to ~ 14 Å• SSA up to ~ 660 m2/g• Good Hydrogen SorptioncapabilitiesIncreased LengthIncreased Length & Study the effect ofHeteroatomsGOAL: link the molecules to the materialthrough imine bonds to have mobility in the final assemblyREFERENCES[1] Gadipelli, Z.X. Guo, Progress in Materials Science, 2015, 69, 1.[2] G. Mercier, A. Klechikov, M. Hedenström, D. Johnels, I. A. Baburin, G. Seifert, R. Mysyk, A. Talyzin, J. of Physical Chemistry C, 2015, 119, 27179.[3] J. Sun, F. Morales-Lara, A. Klechicov, A. Talyzin, I.A. Baburin, G. Seifert, F. Cardano, M. Baldrighi, M. Frasconi, S. Giordani, Carbon, 2017, 120, 145.                                     [4] F. Cardano, M. Frasconi, S. Giordani, Frontiers in Chemistry, 2018, 6, 102.ACKNOWLEDGEMENTSIstituto Italiano di Tecnologia (IIT)is acknowledged for financial support.AB moleculesHybridmaterialSynthesisCharacterization of the MaterialPhotoresponsivematerialGOAL• Synthesis of AB differing each other in the number of amino functionality (1 or 2)• Study of  the Hybrid Material defining properties and difference due to the differentfunctionalities• Characterization of the material under Uv light• Bio-applicationsAB1AB2FTIRXRD Uv-VisXPS measurements haveconfirmed the presenceof C/O/N elements. The material assembledwith AB2 shows4% of N while the one prepared with AB1 shows1% of N .Cyclic Voltammetrymeasurements: ongoing4000 3500 3000 2500 2000 1500 1000 5000.00.20.40.60.81.0TransmittanceWavelength (cm-1) GO GRAPHENEA GO-AB2 AB2str NH2str C-H aromstr OHbend NH2str C=Ostr C-C aromstr N=Nstr C-Nweg NH24000 3500 3000 2500 2000 1500 1000 5000.00.20.40.60.81.0TransmittanceWavelenght (cm-1) GO GRAPHENEA GO-AB1 AB1str OHstr NH2str CHaromstr C-C aromstr C=Obend NH2str N=Nstr C-Nweg NH200.20.40.60.811.21.4250 350 450 550 650 750Absorbance (a.u.)Wavelength (nm)GO pristineGO-AB1GO-AB2AB1AB2RAMAN*Tetrakis(4-aminophenyl)methaneACHIEVED RESULTS

Assembly of pillared graphene oxide mesostructures

https://iris.unito.it/bitstream/2318/1883862/1/FRANCESCA%20CARDANO_poster_.pdf

Assembly of pillared graphene oxide mesostructures

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