Functionalized nanomaterials: tuning shape and surface chemistry for advanced applications

Date

Jun 26, 2025

Time

1:00 PM - 3:00 PM

Speaker

Sara Cerra

Affiliation

Sapienza University of Rome, Italy

Series

TUD nanoSeminar

Language

en

Main Topic

Physik

Other Topics

Physik

Host

Arezoo Dianat

Description

Materials in the nanoscale range exhibit fascinating properties compared to their bulk counterparts, i.e., light absorption and scattering, high surface-to-volume ratio, surface reactivity, and peculiar electrical and magnetic properties. Among these, functionalized noble metal (AuNPs, AgNPs, PdNPs), metal oxide (TiO2NPs, Fe2O3NPs), polymeric nanoparticles (PNPs), and relative hybrid organic/inorganic nanocomposites depict a suitable platform for developing multi-functional responsive systems with applications in nanomedicine [1,2], biotechnology [3,4], sensing [5], and optoelectronics [6]. The synthetic versatility allows their functionalization with neutral or charged, hydrophilic or hydrophobic, organic or organometallic mono- and bi-functional thiols, using both single or mixed ligands. According to the ligand type, nanoparticles can be manipulated to have single, isolated nanoparticles or to induce their self-assembly into complex 2D or 3D networks with collective and synergic properties. In this seminar, how key properties of nanoparticles can be tailored by altering their physical geometries (spherical and anisotropic shapes) or modulating surface functionality using wet chemical approaches will be presented. The study of the structure-function relationships using conventional and advanced morphostructural characterization techniques elucidates the role of stabilizing agents in shaping the final nanomaterial application.
 
 References
 
 [1] S. Cerra et al. Mater. Sci. Eng. C 2020, 117, 111337. https://doi.org/10.1016/j.msec.2020.111337. 
 [2] T.A. Salamone et al. J. Colloid Interface Sci. 2023, 649, 264–278. https://doi.org/10.1016/j.jcis.2023.06.078. 
 [3] L. Chronopoulou et al., Int. J. Biol. Macromol. 2020, 146, 790–797. https://doi.org/10.1016/j.ijbiomac.2019.10.047. 
 [4] M. Mercurio et al. ACS Appl. Nano Mater. 2024, 7, 21124−21140. https://doi.org/10.1021/acsanm.4c04409.
 [5] S. Cerra et al., Colloids Surf. B 2021, 203, 111727. https://doi.org/10.1016/j.colsurfb.2021.111727. 
 [6] S. Cerra et al. Inorg. Chim. Acta 2025, 579, 122553. https://doi.org/10.1016/j.ica.2025.122553.

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Last modified: Apr 26, 2025, 7:37:31 AM