Santiago Herrera

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Santiago E. Herrera received his B.Sc. in Chemistry from the University of Buenos Aires in 2013 and his Ph.D. in Chemistry from the same institution in 2018. He completed his doctoral research in the field of electrochemistry and interfacial electron transfer processes under the supervision of Prof. Ernesto Julio Calvo at the Institute of Chemistry, Physics of Materials, Environment and Energy (INQUIMAE). Between 2018 and 2020, he joined the Soft Matter Laboratory as a postdoctoral researcher, working on soft materials for drug delivery and controlled release applications. During this period, he specialized in the physical chemistry of asymmetric coacervates, protein encapsulation, and the development of antigen nanocarriers for vaccine delivery. Since 2020, Dr. Herrera has been a Research Scientist at the Argentine National Scientific and Technical Research Council (CONICET) at INQUIMAE. His research focuses on two main areas: the development of non-aqueous gel electrolytes for next-generation energy storage systems (Li–O₂, Li–S, and sodium-ion batteries), and the study of phase behavior in asymmetric coacervates composed of polyelectrolytes and amphiphilic molecules. 

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Complex coacervates

Study of the phase behavior of chain-length asymmetric polyelectrolyte complexes. Nanocomplexes, biomolecule encapsulation, and the formulation of nanocarriers.

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Next-generation batteries

Li–O₂, Li–S, and sodium-ion batteries. Catalysts, reaction mechanisms, electrode materials, and redox mediators.

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Gel polymer electrolytes

Gelled non-aqueous electrolyte materials for Li–O₂, Li–S, and Li-ion batteries. Synthesis, characterization, and performance evaluation.

Recent
Articles
  • Gastón P. Rizzo, Rodrigo C. Sanches, Camila Chavero, Daiana S. Bianchi, Eugenia Apuzzo, Santiago E. Herrera, Maximiliano L. Agazzi, M. Lorena Cortez, Waldemar A. Marmisollé, Irene A. Keitelman, Analía S. Trevani, Sergio C. Oliveira, Omar Azzaroni, Paola L. Smaldini* y Guillermo H. Docena. Poly(allylamine)/tripolyphosphate nanocomplex coacervate as a NLRP3-dependent systemic and mucosal adjuvant for vaccines. Front. Immunol., 2026, 17:1751634. DOWNLOAD.
  • Agustina Köhler, Sonia A Wirth, M Lorena Cortez, Omar Azzaroni, Julia Alvarez-Malmagro, Francisco Prieto-Dapena, Santiago E Herrera, Fernando Battaglini, Lucy L Coria-Oriundo. Enhancing catalytic oxygen reduction via sulfonate and phosphate crosslinkers in redox polyelectrolyte-based O 2–glucose membraneless enzymatic biofuel cells. J. Mater. Chem. A, 2025, 13, 35632-35644. DOWNLOAD.
  • María M. Fiora, Huihua Xing, Marilina Cathcarth, Octavio Garate, Santiago E. Herrera, Agustín S Picco, Gabriel Ybarra, Martin Conda-Sheridan*, Mario Tagliazucchi*. Fine tuning the morphology of peptide amphiphile nanostructures via co-assembly. Chem. Sci. 2025, 16, 14605-14615. DOWNLOAD.
  • Eugenia Apuzzo, Marilina Cathcarth, Agustín S. Picco, Catalina von Bilderling, Omar Azzaroni, Maximiliano L. Agazzi*, Santiago E. Herrera*. Insights into the Mechanism of Protein Loading by Chain-Length Asymmetric Complex Coacervates. Biomacromolecules. 2025, 26, 2, 1171-1183. DOWNLOAD.
  • Maximiliano L Agazzi*; M Fernanda Paletti Rovey; Eugenia Apuzzo; Santiago E Herrera; Mariana B Spesia; M De Las Mercedes Oliva; Omar Azzaroni*. Lysozyme/tripolyphosphate complex coacervates: Properties, curcumin encapsulation and antibacterial activity. Food Hydrocolloids. 2023, 145, 109134. DOWNLOAD.
  • Eugenia Apuzzo; Maximiliano Agazzi*; Santiago E Herrera*; Agustín Picco; Gastón Rizzo; Camila Chavero; Daiana Bianchi, Paola Smaldini; María Lorena Cortez; Waldemar A Marmisollé; Gisel Padula; Analía Seoane; Maria Lis Alomar; Maria Paula Denofrio; Guillermo Docena; Omar Azzaroni*. Poly (allylamine)-tripolyphosphate Ionic Assemblies as Nanocarriers: Friend or Foe? ACS Appl. Bio Mater. 2023, 6, 11, 4714–4727. DOWNLOAD.
  • Lucy L Coria-Oriundo; Gabriel Debais; Eugenia Apuzzo; Santiago E Herrera*; Marcelo Ceolín; Omar Azzaroni; Fernando Battaglini; Mario Tagliazucchi*. Phase Behavior and Electrochemical Properties of Highly Asymmetric Redox Coacervates. J. Phys. Chem. B 2023, 127, 35, 7636–7647. DOWNLOAD.
  • Santiago Herrera*; Maximiliano L. Agazzi*; Eugenia Apuzzo; María Lorena Cortez; Waldemar Marmisollé; Mario Tagliazucchi y Omar Azzaroni*. Polyelectrolyte-multivalent molecule complexes: physicochemical properties and applications. Soft Matter. 2023, 19, 2013–2041. DOWNLOAD.
  • Lucy L. Coria-Oriundo, María Lorena Cortez, Santiago E. Herrera, Omar Azzaroni y Fernando Battaglini*. Construction of electroactive polyamine-enzyme assemblies nondependent on the electrical charge. Synthetic Metals. 2023, 294, 117308. DOWNLOAD.
  • Santiago E. Herrera*, Mario Tagliazucchi, Federico J. Williams y Ernesto J. Calvo. Pt nanoparticles in polyelectrolyte multilayers: Polymer effects on the electrocatalytic activity for methanol oxidation. Journal of Electroanalytical Chemistry. 2023, 938, 117430. DOWNLOAD.
  • Lucy L. Coria-Oriundo; Santiago E. Herrera; Lucila P. Méndez De Leo; Fernando Battaglini*. Current Response Enhancement According to the Doping Anion’s Nature in Redox Polyelectrolyte─Enzyme Assemblies. ACS Applied Polymer Materials. 2022, 4, 10, 7759–7769. DOWNLOAD.
  • Liliana Maldonado; Santiago E. Herrera*; Federico J. Williams; Mario Tagliazucchi*. Thickness Fluctuations Produce Apparent Long-Range Tunneling in Large-Area Junctions: The Case of Polyelectrolyte Multilayers. Journal of Physical Chemistry C, 2022, 126, 23, 9956–9964. DOWNLOAD.
  • Herrera, S. E.; Agazzi, M. L.; Cortez, M. L.; Marmisollé, W. A.; Tagliazucchi, M.; Azzaroni, O.* Redox-active polyamine-salt aggregates as multistimuli-responsive soft nanoparticles. Physical Chemistry Chemical Physics, 2020, 22 (14), 7440-7450.
  • Agazzi, M. L.; Herrera, S. E.; Cortez, M. L.; Marmisollé, W. A.; Azzaroni, O.* Self-Assembled Peptide Dendrigraft Supraparticles with Potential Application in pH/Enzyme-Triggered Multistage Drug Release. Colloids Surfaces B Biointerfaces, 2020, 190, 110895. DOWNLOAD.
  • Agazzi, M. L.; Herrera, S. E.; Cortez, M. L.; Marmisollé, W. A.; Tagliazucchi, M.; Azzaroni, O.* Insulin Delivery from Glucose‐Responsive, Self‐Assembled, Polyamine Nanoparticles: Smart “Sense‐and‐Treat” Nanocarriers Made Easy. Chemistry – A European Journal, 2020, 26 (11), 2456–2463.
  • Herrera, S. E.; Agazzi, M. L.; Cortez, M. L.; Marmisollé, W. A.; Tagliazucchi, M.; Azzaroni, O.* Multitasking Polyamine/Ferrioxalate Nano-Sized Assemblies: Thermo-, Photo-, and Redox-Responsive Soft Materials Made Easy. Chemical Communications, 2019, 55 (97), 14653–14656. DOWNLOAD.
  • Herrera, S. E.; Agazzi, M. L.; Cortez, M. L.; Marmisollé, W. A.; Azzaroni, O.* Layer-by-layer formation of polyamine-salt aggregate multilayer. Loading and controlled release of probe molecules from assembled supramolecular networks. Journal of Macromolecular Chemistry and Physics, 2019, 220 (15), 1900094. DOWNLOAD.
  • Davia, F. G.; Herrera, S. E.; Calvo, E. J.* Gaussian Distribution of Electron Transfer Distance in Redox Terminated Self-Assembled Thiol Monolayers. Journal of Physical Chemistry C, 2019, 123 (22), 13939–13943. DOWNLOAD.
  • Herrera, S. E.; Davia, F. G.; Williams, F. J.; Calvo, E. J.* Metal Nanoparticle Enhancement of Electron Transfer to Tethered Redox Centers through Self-Assembled Molecular Films. Langmuir, 2019, 35 (19), 6297–6303. DOWNLOAD.
  • Herrera, S. E.; Agazzi, M. L.; Cortez, M. L.; Marmisollé, W. A.; Tagliazucchi, M.; Azzaroni, O.* Polyamine Colloids Cross‐ Linked with Phosphate Ions: Towards Understanding the Solution Phase Behavior. ChemPhysChem, 2019, 20 (8), 1044– 1053. DOWNLOAD.
  • Agazzi, M. L.; Herrera, S. E.; Cortez, M. L.; Marmisollé, W. A.; von Bilderling, C.; Pietrasanta, L. I.; Azzaroni, O.* Continuous Assembly of Supramolecular Polyamine–Phosphate Networks on Surfaces: Preparation and Permeability Properties of Nanofilms. Soft Matter, 2019, 15 (7), 1640–1650.
Funding
  • Federal High-Impact Networks Program (2023). Awarded funding: USD 1,000,000. Funding agency: Ministry of Science and Technology. Role: Principal Investigator / Node Coordinator. Project title: Federal initiative for the development of sustainable materials and processes for energy storage.
  • PICT 2022 – Recently Established Research Group, Track I. Project code: PICT 2022-00788. Awarded funding: ARS 4,000,000. Funding agency: National Agency for the Promotion of Research, Technological Development and Innovation. Role: Principal Investigator. Project title: Asymmetric polyelectrolyte nanocomplexes: phase behavior, stability, optimization of protein encapsulation, and potential applications in vaccines.
  • PDE 2023. Project code: PDE_40_2023. Awarded funding: ARS 350,000. Project title: Design, synthesis, characterization, and fabrication of Aero-Eutectic (Aero-Graphite, AG) and electrolyte materials for advanced lithium batteries. Role: Research Team Member. Funded by the University of Buenos Aires (UBA).
  • PIBAA 2022–2023. Project code: 28720210100613CO. Awarded funding: ARS 450,000. Project title: Organic gels based on glymes and oligoamines for use as electrolytes in Li–O₂ batteries. Role: Principal Investigator. Funded by CONICET.
  • PICT 2020 – Early Career Investigator. Project code: PICT-2020-SERIEA-00035. Awarded funding: ARS 900,743.92. Project title: Non-aqueous hybrid gels as electrolytes for Li–O₂ batteries. Role: Principal Investigator. Funded by the National Agency for the Promotion of Research, Technological Development and Innovation.
  • PICT 2020 – Emerging Research Group. Project code: PICT-2020-SERIEA-01758. Awarded funding: ARS 1,909,845. Project title: Supramolecular platforms containing metal nanoparticles embedded in polymers: development and physicochemical characterization. Role: Responsible Research Group. Funded by the National Agency for the Promotion of Research, Technological Development and Innovation.
  • PIP 2020 – Research Group. Project code: 11220200102008CO. Awarded funding: ARS 1,320,000. Project title: Metal nanoparticles to optimize charge transport in electroactive polymers: construction of model systems and mechanistic studies. Role: Responsible Research Group. Funded by CONICET.
  • FONARSEC Project: Development of the Argentine Subunit Vaccine ARGENVAC for the Prevention of COVID-19. Awarded funding: ARS 60,000,000. Funding agency: National Agency for the Promotion of Research, Technological Development and Innovation (Agencia I+D+i). Role: Researcher. Project Manager: Guillermo Docena. As a member of the research team, my responsibilities included the development of protein-antigen nanocarriers (antigens developed by Cecilia D’Alessio and Javier Santos at FCEN–UBA) with adjuvant properties, as well as the transfer of the technology to INTI (responsible for scale-up and GMP certification) and GHION S.A. (responsible for final production).

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