Agenda

Anciens événements

08
oct

Colloidal synthesis for nanoparticles with enhanced plasmonic performance

Ouvert au grand public Colloque / Congrès / Forum
08.10.2025 16:45
Présentiel

The technological prospects of metal nanoparticles have stimulated intense research over the last three decades into their growth mechanisms, the relationship between their morphology and optical properties, control over surface chemistry, and bottom-up fabrication through self-assembly. Today, it is commonly agreed that without control over the quality of nanoparticles, bottom-up nanofabrication remains a distant goal, as do the deep-tech-based innovative solutions.1 In this seminar, we will discuss the current mechanisms behind the liquid-phase growth of metallic nanoparticles into desired sizes and morphologies.2,3 We will also discuss the importance of controlling surface chemistry, which ultimately determines the fate of nanoparticles in the context of targeted applications. Finally, by identifying the current limitations in colloidal nanofabrication, we aim to answer the question of whether the use of modern tools arising from the digital transition 4,5 can provide a new breath of fresh air in the field, advancing research into precision nanochemistry without compromising scientific integrity.
References
(1) Mirkin, C. A.; et al. 33 Unresolved Questions in Nanoscience and Nanotechnology. ACS Nano 2025. https://doi.org/10.1021/acsnano.5c12854.
(2) Sánchez-Iglesias, A.; Winckelmans, N.; Altantzis, T.; Bals, S.; Grzelczak, M.; Liz-Marzán, L. M. High-Yield Seeded Growth of Monodisperse Pentatwinned Gold Nanoparticles through Thermally Induced Seed Twinning. J. Am. Chem. Soc. 2017, 139 (1), 107–110. https://doi.org/10.1021/jacs.6b12143.
(3) Sánchez-Iglesias, A.; Grzelczak, M. Expanding Chemical Space in the Synthesis of Gold Bipyramids. Small 2025, 21 (2), 2407735. https://doi.org/10.1002/smll.202407735.
(4) Rao, A.; Grzelczak, M. Revisiting El-Sayed Synthesis: Bayesian Optimization for Revealing New Insights during the Growth of Gold Nanorods. Chem. Mater. 2024, 36 (5), 2577–2587. https://doi.org/10.1021/acs.chemmater.4c00271.
(5) Montaño-Priede, J. L.; Rao, A.; Sánchez-Iglesias, A.; Grzelczak, M. Accelerated Design of Gold Nanoparticles with Enhanced Plasmonic Performance. Sci. Adv. 2025, 11 (33), eadx2299. https://doi.org/10.1126/sciadv.adx2299.


Quand? 08.10.2025 16:45 - 
Où? PER 08 0.51
Chemin du Musée 3, 1700 Fribourg 
Intervenants Prof. Marek Grzelczak
Centro de Física de Materiales, and Donostia International Physics Center, Donostia-San Sebastián, Spain
Invited by group Acuna
Contact Département de Physique
Prof. Guillermo Acuna
guillermo.acuna@unifr.ch
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