Ricardo Oliveira Freire | Chemistry and Materials Science | Best Researcher Award

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Prof. Dr. Ricardo Oliveira Freire | Chemistry and Materials Science | Best Researcher Award

Federal University of Sergipe | Brazil

Dr. Ricardo Oliveira Freire (🎓 b. 29 May 1977, Aracaju, Brazil) is a distinguished Brazilian chemist renowned for his pioneering work in theoretical and computational chemistry, particularly involving lanthanide complexes. A Level 1C Researcher of Productivity at CNPq, Dr. Freire is currently an Associate Professor at the Federal University of Sergipe (UFS). With over two decades of dedication to research and teaching, he has led numerous innovative projects, developed the renowned LUMPAC software package, and significantly advanced the Sparkle model. His scientific influence spans Brazil and beyond through prolific publications, international collaborations, and impactful mentorship.

Author Profile👤

Google Scholar

ORCID

Scopus

Strengths for the Awards✨

Dr. Ricardo Oliveira Freire stands out as a highly accomplished researcher in the field of theoretical and computational chemistry, particularly in lanthanide luminescence and semiempirical quantum methods. With a prestigious CNPq Level 1C Productivity Fellowship, he reflects national recognition for sustained excellence. Dr. Freire has authored over 123 peer-reviewed publications, accumulating over 5,800 citations and achieving a Google Scholar h-index of 39, indicating both productivity and influence. His projects like LUMPAC and Sparkle/RM1 models have made significant contributions to computational chemistry and spectroscopy, especially for lanthanide complexes with biomedical and photonic applications.

He has mentored numerous students at undergraduate, Master’s, Ph.D., and postdoctoral levels, showcasing a robust commitment to research training. His involvement with more than 40 scientific journals as a reviewer and editorial board member, including JACS, Inorganic Chemistry, and J. Phys. Chem., reflects his thought leadership and service to the scientific community. Furthermore, his work has been acknowledged with multiple national and international awards, including listings in AD Scientific Index Top 10,000 Latin American Scientists, a cover feature in Dalton Transactions, and honors for impactful conference presentations and guidance.

🎓 Education

Dr. Freire earned his Bachelor’s degree in Chemistry from the Federal University of Sergipe in 2002, where he explored the theoretical design of highly luminescent lanthanide complexes. He pursued both his M.Sc. (2002–2004) and Ph.D. (2004–2007) at the Federal University of Pernambuco under Prof. Alfredo Mayall Simas, focusing on the development and enhancement of the Sparkle model for lanthanides. His academic trajectory laid a robust foundation for high-level research in physical and theoretical chemistry.

👨‍🏫 Experience

Since 2007, Dr. Freire has been actively involved in teaching and research at UFS, where he has held various academic and administrative roles including Head of the Chemistry Department and Coordinator of the Graduate Program in Chemistry. He also collaborates with the Federal University of Pernambuco and has taught post-graduate courses at leading institutions like UNICAMP and USP. A sought-after reviewer for over 40 top-tier journals, he exemplifies excellence in both pedagogy and peer contribution.

🔍 Research Interests On Chemistry and Materials Science

Dr. Freire’s research delves into semiempirical methods and computational modeling of lanthanide complexes, with notable contributions to the RM1 and Sparkle methods. He leads the LUMPAC (Luminescence Package) project, enabling accurate predictions of photophysical properties. His interdisciplinary work spans materials science, bioinorganic chemistry, and quantum mechanics, collaborating globally with teams from the US, India, Russia, Portugal, and more.

🏆 Awards

Dr. Freire has received numerous accolades including the Latin America Top 10,000 Scientist (2021, 2023), BRICS Top 10,000 Scientist (2021), and recognitions from prestigious institutions like the Royal Society of Chemistry and the Brazilian Chemical Society. He was honored with cover features in journals, mentoring awards, and commendations from academic and government bodies, solidifying his reputation as a leading scientific voice in Latin America.

📄 Publications

  • RM1: A reparameterization of AM1 for H, C, N, O, P, S, F, Cl, Br, and I
    Authors: GB Rocha, RO Freire, AM Simas, JJP Stewart
    Year: 2006
    Cited by: 936

  • Cytotoxicity and slow release of the anti-cancer drug doxorubicin from ZIF-8
    Authors: IB Vasconcelos, TG da Silva, GCG Militão, TA Soares, NM Rodrigues, …
    Year: 2012
    Cited by: 330

  • LUMPAC lanthanide luminescence software: Efficient and user friendly
    Authors: JDL Dutra, TD Bispo, RO Freire
    Year: 2014
    Cited by: 277

  • Sparkle model for the calculation of lanthanide complexes: AM1 parameters for Eu(III), Gd(III), and Tb(III)
    Authors: RO Freire, GB Rocha, AM Simas
    Year: 2005
    Cited by: 195

  • Spectroscopic Study of a UV‐Photostable Organic–Inorganic Hybrids Incorporating an Eu³⁺ β‐Diketonate Complex
    Authors: PP Lima, RA Sá Ferreira, RO Freire, FA Almeida Paz, L Fu, S Alves Jr, …
    Year: 2006
    Cited by: 151

  • 3-phenyl-4-benzoyl-5-isoxazolonate Complex of Eu³⁺ with Tri-n-octylphosphine Oxide as a Promising Light-conversion Molecular Device
    Authors: R Pavithran, NS Saleesh Kumar, S Biju, MLP Reddy, SA Junior, RO Freire
    Year: 2006
    Cited by: 133

  • Sparkle/PM7 Lanthanide Parameters for the Modeling of Complexes and Materials
    Authors: JDL Dutra, MAM Filho, GB Rocha, RO Freire, AM Simas, JJP Stewart
    Year: 2013
    Cited by: 130

  • Sparkle/PM6 Parameters for all Lanthanide Trications from La(III) to Lu(III)
    Authors: RO Freire, AM Simas
    Year: 2010
    Cited by: 124

  • Tb³⁺ → Eu³⁺ Energy Transfer in Mixed-Lanthanide-Organic Frameworks
    Authors: MO Rodrigues, JDL Dutra, LAO Nunes, GF de Sá, WM de Azevedo, …
    Year: 2012
    Cited by: 123

  • Energy transfer mechanisms in organic-inorganic hybrids incorporating europium (III): a quantitative assessment by light emission spectroscopy
    Authors: PP Lima, SS Nobre, RO Freire, SA Junior, RA Sá Ferreira, U Pischel, …
    Year: 2007
    Cited by: 101

  • Sparkle model for AM1 calculation of lanthanide complexes: Improved parameters for europium
    Authors: GB Rocha, RO Freire, NB da Costa Jr, GF de Sá, AM Simas
    Year: 2004
    Cited by: 100

  • Tuning of the excitation wavelength from UV to visible region in Eu³⁺-β-diketonate complexes: Comparison of theoretical and experimental photophysical properties
    Authors: V Divya, RO Freire, MLP Reddy
    Year: 2011
    Cited by: 97

✅ Conclusion

With an illustrious career marked by innovative research, international impact, and unwavering academic leadership, Dr. Ricardo Oliveira Freire exemplifies the qualities of a “Best Researcher Award” recipient. His dedication to advancing theoretical chemistry, mentoring future scientists, and fostering global collaboration positions him as a pillar in the scientific community. This nomination not only honors his achievements but inspires continued excellence in chemical sciences.

Xinhua Ouyang | Chemistry | Best Researcher Award

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Prof. Dr. Xinhua Ouyang | Chemistry | Best Researcher Award

Professor | Fujian Agriculture & Forestry University | China

Dr. Xinhua Ouyang is a distinguished professor at the College of Material Engineering, Fujian Agriculture & Forestry University, China. With extensive expertise in organic and perovskite solar cells, organic light-emitting devices, and nonlinear optical materials, he has significantly contributed to the advancement of photoelectronic materials. His research focuses on the synthesis, fabrication, and theoretical understanding of novel materials for energy applications. Dr. Ouyang has published numerous high-impact papers and has been recognized for his contributions to the field.

Profile👤

ORCID

Strengths for the Awards✨

✅ Outstanding Research Contributions: Xinhua Ouyang has made significant contributions in the fields of organic and perovskite solar cells, organic light-emitting devices, and nonlinear optics. His research has direct implications for renewable energy and advanced materials, aligning well with cutting-edge scientific advancements.

✅ High-Impact Publications: Published in prestigious journals such as Nature Photonics, Advanced Energy Materials, Angewandte Chemie International Edition, and Advanced Functional Materials, which indicates high recognition in the scientific community. These journals have high impact factors, demonstrating the broad influence of his work.

✅ Interdisciplinary Research Approach: His expertise spans materials science, chemistry, and applied physics, demonstrating a well-rounded and innovative research profile.

✅ International Research Exposure: His academic and research experiences include collaborations with institutions like National University of Singapore, showcasing global research collaboration and expertise.

✅ Innovation in Solar Cell Technology: His contributions to defect passivation in perovskite solar cells and efficiency enhancements in organic solar cells suggest significant advancements in renewable energy technologies, making his research valuable for practical applications.

Education 🎓

  • B.S. in Chemistry (1999.9-2003.6) – College of Chemistry and Chemical Engineering, Jishou University, China.
  • M.S. in Organic Chemistry (2003.9-2006.7) – School of Chemistry and Environment, South China Normal University, China (Supervisor: Prof. Heping Zeng).
  • Ph.D. in Applied Chemistry (2006.9-2009.12) – School of Chemistry and Chemical Engineering, South China University of Technology, China (Supervisor: Prof. Heping Zeng).
  • Joint Ph.D. Culture Program in Materials Physics and Chemistry (2008.9-2009.9) – Department of Physics, National University of Singapore, Singapore (Supervisor: Prof. Wei Ji).

Experience 🌿

  • Professor (2016.7-present) – Fujian Agriculture & Forestry University.
  • Associate Professor (2011.3-2016.6) – Ningbo Institute of Materials Technology and Engineering.
  • Research Fellow (2009.10-2011.2) – National University of Singapore.

Research Interests On Chemistry 🔬

  • Solar Cells: Design, synthesis, and properties of organic and perovskite materials; fabrication of high-efficiency solar devices; theoretical investigations.
  • Organic Light-Emitting Devices: Development of novel emitters, carrier transport materials, and interfacial materials; dopant and non-dopant device fabrication; theoretical analysis using Gaussian software.
  • Nonlinear Optical Materials: Synthesis and property evaluation; transient optical property analysis using advanced laser path design.
  • Photoelectronic Materials: Understanding novel mechanisms and structure-property relationships for cutting-edge applications.

Awards & Honors 🏆

Dr. Ouyang has received numerous awards recognizing his pioneering research in photoelectronic materials, including national and international honors for his contributions to organic and perovskite solar cells.

Publications 📚

Dr. Ouyang has authored many influential papers in top-tier journals. Below are some of his representative works:

  1. Dimethylacridine Based Emitters for Non‐Doped Organic Light‐Emitting Diodes with Improved Efficiency

    • Authors: Min Zhang, Xingye Zhang, Ning Yang, Yibing Wu, Xinhua Ouyang
    • Year: 2025

  2. Efficient perovskite solar cells based on polyoxyethylene bis(amine) and NaPF6 modified SnO2 layer with high open-circuit voltage

    • Authors: Xiangning Xu, Zhichao Lin, Qili Song, Hairui Duan, Hongye Dong, Xiaowen Gao, Osamah Alsalman, Cheng Mu, Xinhua Ouyang
    • Year: 2024

  3. In Situ Photogenerated Radicals of Hydroxyl Substituted Pyrene‐Based Triphenylamines with Enhanced Transport and Free Doping/Post‐Oxidation for Efficient Perovskite Solar Cells

    • Authors: Xiaohui Wang, Zhixin Xie, Rongxin Wang, Ye Xiao, Kai Yan, Yu Zhao, Rui Lin, Carl Redshaw, Yonggang Min, Xinhua Ouyang et al.
    • Year: 2024

  4. Simultaneous dual-interface modification based on mixed cations for efficient inverted perovskite solar cells with excellent stability

    • Authors: Chunjian Wu, Rongxin Wang, Zhichao Lin, Ning Yang, Yibing Wu, Xinhua Ouyang
    • Year: 2024

  5. Tailoring the permittivity of passivated dyes to achieve stable and efficient perovskite solar cells with modulated defects

    • Authors: Rongxin Wang, Zhichao Lin, Xinhua Ouyang
    • Year: 2024

  6. Improved charge transport based on donor-acceptor type solid additive with large dipole moment for efficient organic solar cells

    • Authors: Rui Lin, Hui Zhou, Xuee Xu, Xinhua Ouyang
    • Year: 2024

  7. Boosting the efficiency of organic solar cells based on a highly planar π-conjugated solid additive working as the sensitizer

    • Authors: Rui Lin, Hui Zhou, Xuee Xu, Xinhua Ouyang
    • Year: 2024

  8. Highly Stable Perovskite Solar Cells Based on the Efficient Interaction between Pb2+ and Cyano Groups of 4‐Aminophthalonitrile

    • Authors: Hairui Duan, Zhichao Lin, Xiangning Xu, Qili Song, Hongye Dong, Xiaowen Gao, Cheng Mu, Xinhua Ouyang
    • Year: 2023

  9. Ecofriendly Hydroxyalkyl Cellulose Additives for Efficient and Stable MAPbI3‐Based Inverted Perovskite Solar Cells

    • Authors: Xuefeng Zhu, Rui Lin, Hao Gu, Huichao Hu, Zheng Liu, Guichuan Xing, Yibing Wu, Xinhua Ouyang
    • Year: 2023

  10. Excited-state intramolecular proton transfer emitter for efficient violet-blue organic light-emitting diodes with hybridized local/charge transfer channel

  • Authors: Yibing Wu, Rongxin Wang, Rui Lin, Xuee Xu, Xingye Zhang, Osamah Alsalman, Yu Qiu, Ashraf Uddin, Xinhua Ouyang
  • Year: 2023

Conclusion 🌟

Dr. Xinhua Ouyang is a leading researcher in photoelectronic materials, with a strong background in organic and perovskite solar cells, organic light-emitting devices, and nonlinear optics. His extensive research contributions and innovative approaches continue to shape the future of sustainable energy materials. With a dedication to advancing science and technology, Dr. Ouyang remains at the forefront of material engineering, driving the development of next-generation photoelectronic applications.