Events

AUREMN – 20th NMR Users Meeting (2025)

  • Surface and paramagnetic effects in pseudo-cubic NaYF4 nanoparticles by solid state 19F and 23Na NMR combining time and spectral resolution, Thiago Branquinho de Queiroz / Invited talk.

XXIII Brazilian Materials Research Society Meeting (XXIII B-MRS 2025)

  • Engineering the work function of indium tin oxide via self-assembled monolayer for stable organic solar cells: a theoretical study, Leonardo Rodrigues Moreira, Reinaldo V. Dantas Filho, Thiago Branquinho de Queiroz / Poster Section.
  • Design of small donor/acceptor molecular systems for photoinduced charge separation with density functional theory, Reinaldo Vieira Dantas Filho, Thamiris Cescon dos Santos, Leonardo Rodrigues Moreira, Thiago Branquinho de Queiroz / Oral Section.
  • Evaluation of singlet fission in a naphthalene diimide molecular crystal, Renan Gabriel de Assis, Marcos de Oliveira Junior, Marcia Tsuyama Escote and Thiago Branquinho de Queiroz / Poster Section.
  • Engineering Small-Molecule Heterojunctions for Light-Induced Charge Separation, Thamiris Cescon dos Santos, Reinaldo Vieira Dantas Filho, Leonardo Rodrigues Moreira, Alvaro Takeo Omori and Thiago Branquinho de Queiroz / Poster Section.
  • Understanding photoinduced charge separation processes in molecular systems and organic-inorganic interfaces from theoretical and experimental approaches, Renan Gabriel de Assis, Leonardo Rodrigues Moreira, Reinaldo Vieira Dantas Filho, Thamiris Cescon dos Santos, Alvaro Takeo Omori, Marcos de Oliveira Junior, Marcia Tsuyama Escote and Thiago Branquinho de Queiroz / Oral Section.

Thamiris and Thiago visit Prof. Gregório C. Faria’s group at IFSC – USP – Brazil

  • In collaboration with the group of Prof. G. C. Faria, Thamiris has prepared and characterized OPV devices with SN3a-DCV molecular crystals as additive to P3HT/PCBM and PM6/Y6. This intense one week of immersion was increadibly fruitfull and we could probe the enhanced charge transport properties due to the small molecular acceptor SN3a-DCV. Participants: Thamiris C. dos Santos, Yosthyn M. Ariza Florez, Dr. Diego Silva and Prof. Gregório C. Faria and Thiago Branquinho de Queiroz / Scientific Visit on 08-12/09/2025.

Autumn Meeting 2025 – Brazilian Physical Society – Belém – Brazil

  • Effects of O2 plasma power on the surface properties of indium tin oxide, Leonardo Rodrigues Moreira, Rita de Cássia Cipriano Rangel, Thiago Branquinho de Queiroz / Poster Section.
  • Assessment of local range-separated hybrid functionals for describing donor-acceptor molecular systems, Reinaldo Vieira Dantas Filho, Stephan Kümmel and Thiago Branquinho de Queiroz / Oral Section.

E-MRS 2025 Spring Meeting – Strasbourg – France

  • Design of small molecular systems and organic-inorganic interfaces for efficient photoinduced charge separation, Thamiris Cescon dos Santos, Reinaldo Vieira Dantas Filho, Leonardo Rodrigues Moreira, Alvaro Takeo Omori and Thiago Branquinho de Queiroz / Poster Section.
  • Small conjugated molecular crystal for enhanced photovoltaic applications, Thamiris Cescon dos Santos, Reinaldo Vieira Dantas Filho, Fábio Furlan Ferreira, Álvaro Takeo Omori, Thiago Branquinho de Queiroz / Poster Section.

Thamiris visits Dr. Roger C. Hiorns – Université de Pau tt des Pays de l’Adour / CNRS – Pau – France

  • In this intense 3 weeks scientific visit, Thamiris Cescon has prepared SN3-polyfullerenes to be investigated as additive in OPVs aiming enhance charge transport. Participants: Thamiris Cescon dos Santos, Dr. Marco Antônio G. B. Gomes, Dr. Roger C. Hiorns and Thiago Branquinho de Queiroz – Scientific visit on 04-23/05/2025.

Experiments at IMBUIA/SIRIUS/CNPEM – Nano-structure and charge separation domain of donor-acceptor molecular heterojunctions by nano IR-spectroscopy

  • Renan Gabriel de Assis has investigated the molecular domain by nano-IR SNOM in heterlojunctions of donor-acceptor molecular sytems. He has also performed preliminar experiments to characterize charge separation domain in photoinduced processes. Participants: Renan Gabriel de Assis, Dr. Francisco Carlos Barbosa Maia and Thiago Branquinho de Queiroz – Imbuia/Sirius – 13-16/05/2025.

XXII Brazilian Materials Research Society Meeting (XXII B-MRS 2024)

  • Design and preparation of non-fullerene acceptor for photoinduced charge separation systems, Thamiris Cescon dos Santos, Reinaldo Vieira Dantas Filho, Alvaro Takeo Omori and Thiago Branquinho de Queiroz / Poster Section.
  • Preparation and characterization of N,N’-bis(3- triethoxysilylpropyl)-1,4,5,8-naphthalenediimide(NDI) molecular crystal and NDI mesoporous organosilicas for durable organo-electronic systems, Renan Gabriel de Assis, Marcos de Oliveira Junior, Marcia Tsuyama Escote, Javier Acuña, Fabio Furlan Ferreira, Luana Sucupira Pedroza, Sergio Brochsztain and Thiago Branquinho de Queiroz / Poster Section.

Escola Ricardo Rodrigues de Luz Síncroton (ER2LS 2024)

  • Design of naphthalenediimide with phenothiazine derivatives as photoinduced charge separating junction, Renan G. de Assis, Márcia Tsuyama Escote, Thiago Branquinho de Queiroz / Poster Section – 2nd award scientific initiation.

XXI Brazilian Materials Research Society Meeting (XXI B-MRS 2023)

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  • Preparation and characterization of cesium carbonatedoped indium tin oxide for low work function electrode, Leonardo Rodrigues Moreira  and Thiago Branquinho de Queiroz, Organic Electronics, Photonics and Bioelectronics: Fundamentals, Applications and Emerging Technologies / Poster Section.
  • Investigation of naphthalenediimide with phenothiazineas photoinduced charge-separating junction II, Renan Gabriel de Assis, Sérgio Brochsztain, Márcia Tsuyama Escote, Thiago Branquinho de Queiroz, Organic Electronics, Photonics and Bioelectronics: Fundamentals, Applications and Emerging Technologies / Poster Section.
  • One-pot synthesis of pinacolone derivatives from acetophenones, Andréia Joice Oliveira Meira, Thiago Branquinho de Queiroz, Alvaro Takeo Omori, Organic Electronics, Photonics and Bioelectronics: Fundamentals, Applications and Emerging Technologies / Poster Section.
  • Designing low-bandgap S,N-Heteroacene oligomers, Reinaldo Vieira Dantas Filho e Thiago Branquinho de Queiroz / Poster Section.
  • Screened optimally tuned range separated hybridfunctionals for solvated molecular systems, Thiago Branquinho de Queiroz and Reinaldo Vieira Dantas Filho, Organic Electronics, Photonics and Bioelectronics: Fundamentals, Applications and Emerging Technologies / Oral presentation.

TDDFT School and Workshop: Excited States and Dynamics (2023)

  • Optimal tuned range separated hybrid functional approaches for solvation effects in low bandgap molecular systems, Reinaldo Vieira Dantas Filho and Thiago Branquinho de Queiroz / Poster Section.

Autumn Meeting of the Brazilian Physical Society (EOSBF-2023)

  • Electronic and optical properties of S,N-Heteroacenes from screened range-separated hybrid functionals, Reinaldo V. Dantas Filho, Thiago B. de Queiroz, ELECTRONIC STRUCTURE METHODS II / MACHINE LEARNING / Poster Section.
  • Tuning the work function of indium tin oxide by thermal evaporation of cesium carbonate, Leonardo Rodrigues Moreira, Thiago Branquinho de Queiroz , ENERGY STORAGE, CONVERSION AND PHOTOVOLTAICS / Poster Section.
  • Investigation of naphthalenediimide with phenothiazine as photoinduced charge-separating junction I, Renan Gabriel de Assis, Sérgio Brochsztain, Márcia Tsuyama Escote, Thiago Branquinho de Queiroz, ELECTRONIC STRUCTURE METHODS II / MACHINE LEARNING / Poster Section.
  • Investigating light harvesting and charge separation in non-fullerene donor-acceptor molecular systems, Reinaldo V. Dantas Filho, Thiago B. de Queiroz, ELECTRONIC STRUCTURE METHODS II / Oral presentation.

Workshop on Advanced Solid-State NMR (IFSC/USP-2023)

  • 19F and 23Na relaxation processes in pseudo-cubic NaYF4 nanoparticles: NMR as a tool to investigate surface and paramagnetic effects, Thiago B. de Queiroz, Oral presentation.

II ICTP-SAIFR Condensed Matter: Theory in the Metropolis (IFT 2022)

  • Revealing mechanisms of light harvesting and charge separation in molecular systems: challenges for time-dependent density functional theory, Thiago B. de Queiroz, Oral presentation.