Article
Chemistry, Physical
Alex J. Plajer, Charlotte K. Williams
Summary: Heteronuclear complexes exhibit high catalytic activity in ring opening copolymerizations. By studying a series of trinuclear complexes, it was found that certain catalysts show high activity for specific reactions, such as CHO/CO2 ROCOP and CHO/ PA copolymerization, allowing for controlled polyether block formation. These findings can guide future catalyst design and inspire other CO2 utilization processes.
Article
Multidisciplinary Sciences
Yanyan Zhao, Sheng Dai, Ke R. Yang, Sufeng Cao, Kelly L. Materna, Hannah M. C. Lant, Li Cheng Kao, Xuefei Feng, Jinghua Guo, Gary W. Brudvig, Maria Flytzani-Stephanopoulos, Victor S. Batista, Xiaoqing Pan, Dunwei Wang
Summary: Atomically dispersed catalysts have shown high activity for selective oxidation of carbon monoxide with excess hydrogen, but their stability is not ideal. This study demonstrates that introducing a structural component to minimize the diffusion of the active metal center significantly improves stability without compromising activity. By using a dinuclear iridium heterogeneous catalyst as a study platform, two types of oxygen species, interfacial and bridge, are identified to work together for both activity and stability. This work provides important insights into the synergistic effect between the active metal center and the supporting substrate, with potential broad applications for atomically dispersed catalysts.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Medicinal
Anna Rovira, Enrique Ortega-Forte, Cormac Hally, Mireia Jorda-Redondo, Diego Abad-Montero, Gloria Vigueras, Jesus I. Martinez, Manel Bosch, Santi Nonell, Jose Ruiz, Vicente Marchan
Summary: Photodynamic therapy shows potential as a non-invasive anticancer tool, but the development of highly effective and non-toxic photosensitizers that can work under hypoxic conditions is still needed. In this study, Ir(III)-COUPY conjugates were developed based on the advantageous properties of COUPY fluorophores and cyclometalated Ir(III) complexes, aiming to explore structure-activity relationships. The structural modifications within the coumarin scaffold had a significant impact on the photophysical properties and cellular uptake of the conjugates. All Ir(III)-COUPY conjugates exhibited high phototoxicity under green light irradiation, attributed to the photogeneration of reactive oxygen species (ROS), while remaining non-toxic in the dark. Two hit conjugates showed excellent phototherapeutic indexes in cisplatin-resistant A2780cis cancer cells, indicating the potential of photoactive therapy approaches based on the conjugation of far-red/NIR-emitting COUPY dyes and transition metal complexes to overcome acquired resistance to cisplatin.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Lin-Yan Bao, Rong-Wan Gao, Shuang Wang, Run-Han Li, Bo Zhu, Zhong-Min Su, Wei Guan
Summary: Photoredox/transition-metal dual catalysis is an efficient method for constructing C-N bonds. However, low recovery, low utilization rate, and high cost have hindered its application and development. By utilizing zinc powder, the oxidation state of nickel was successfully regulated, achieving a catalytic cycle without light.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Organic
Dominik Albat, Alicia Koecher, Julia Witt, Hans-Guenther Schmalz
Summary: This study identified a new superior ligand (L24*) through screening a set of chiral phosphoramidites, which enabled the synthesis of amination products with high enantioselectivity under optimized conditions. This ligand also exhibited outstanding diastereoselectivity and negligible matched/mismatched differences in the N-allylation of other amino acid tert-butyl esters.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Xiaonan Hu, Yang Ye, Wenbo Dong, Yichao Huang, Mingshan Zhu
Summary: The photocatalytic behaviors among ten kinds of organic contaminants and two heterojunction photocatalysts were comparatively investigated. The photocatalysts with abundant oxygen vacancies exhibited stronger absorption capacity towards light and weaker redox ability. A quantitative evaluation of structure-activity relationships among different organic contaminants and two photocatalysts were constructed.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Applied
Daniel Becker, Dirk Bockfeld, Matthias Tamm
Summary: In this study, two complexes were obtained by reacting the bidentate [P,N] ligand with [Ir(COD)Cl] and adding different ligands, and further reaction yielded a diiridium tetrahydride. Crystal structure analysis of the three complexes revealed that the position of the hydrogen atoms in one of the complexes could be refined freely. Since the first complex is a validated catalyst, the performance of the two complexes in deuterium labeling reactions was compared.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Yongjia Shi, Yuhuan Yang, Senmiao Xu
Summary: This study presents the first example of transition-metal-catalyzed regio- and stereo-controllable C-H functionalization, achieving a broad range of functional groups and high enantioselectivities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Pei Su, Wenyang Fu, Xuedong Du, Ge Song, Yunping Tang, Minghua Zhou
Summary: The study prepared Fe particles encapsulated in carbon nanotubes as catalysts for degrading phenol and its derivatives. The confinement effect significantly improved the degradation efficiency, especially at 5 nm inner diameter of CNTs. This finding suggests a new paradigm for selective oxidation of pollutants with electron-withdrawing groups using suitable heterogeneous catalysts with significant confinement effect.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Hao Dong, Yihui Zou, Kewei Zhang, Yuanyuan Sun, Bin Hui, Dongjiang Yang, Liping Cai, Jian Li
Summary: This study presents a rational design of urchin-like Cu2O/CuO heterojunction on a multi-channeled wood carbon as a heterogeneous catalyst, which shows enhanced catalytic activity and cyclic utilization for degradation of aromatic organic pollutants. The wood carbon-based catalysts exhibit high efficiency in degrading pollutants within a wide pH range and show excellent durability. The unique bionic structure of the Cu2O/CuO heterojunction, induced by wood carbon, plays a crucial role in the efficient degradation process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Marius Peters, Dirk Bockfeld, Matthias Tamm
Summary: This study reports the synthesis of novel iridium complexes and their application in catalytic reactions. Neutral and cationic complexes were obtained through reactions with specific ligands, and these complexes exhibited high activity in catalytic reactions of aromatic substrates.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Review
Chemistry, Physical
Mona Abdelgaid, Giannis Mpourmpakis
Summary: This article discusses the importance of heterogeneous catalysts in industrial chemical transformations, with a focus on metal oxides as catalysts and the application of computational chemistry in catalyst discovery. Through structure-activity relationships, promising catalytic materials can be rapidly predicted to guide experimental research. The article also provides detailed insights into the applications of oxides in industrial reactions such as methane activation and conversion, alkane dehydrogenation, and alcohol dehydration.
Article
Chemistry, Inorganic & Nuclear
Jian-Gong Huang, Jiamin Jin, Qin-Zhen Yuan, Xue-Xiao Yang, Deng-Ke Cao, Chungen Liu
Summary: Upon irradiation with 415 nm light, the complex [Ir(pbt)(2)(dppn)]Cl(1) exhibits high photo-oxidation activity (87% conversion yield for 1 and 15% for the free ligand dppn) and light-controlled luminescence. Two complexes, [Ir(pbt)(2)(dppn)]Cl (1) and [Ir(pt)(2)(dppn)]Cl (2), have been synthesized to investigate the influence of cyclometalating ligands on the photo-oxidation activity and explore their photo-oxidation-induced luminescence.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Arjun Vijeta, Carla Casadevall, Souvik Roy, Erwin Reisner
Summary: Ni-deposited mesoporous graphitic carbon nitride (Ni-mpg-CNx) is introduced as an inexpensive, robust, easily synthesizable and recyclable material that functions as an integrated dual photocatalytic system. It overcomes the limitations of traditional reactions by providing new opportunities for dual catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Enis Oguzhan Eren, Saim Ozkar
Summary: This review provides an overview of recent advances in developing highly efficient heterogeneous catalysts for the selective electroreduction of CO2 to CO, considering mechanistic investigations and basic catalytic requirements. It compares the efficiency of different combinations of transition metals with various supporting materials, and addresses the current challenges in designing future research in this field.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Jongsik Kim, David B. Go, Jason C. Hicks
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Yolanda Bonita, Jason C. Hicks
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Engineering, Chemical
Yolanda Bonita, Timothy P. O'Connell, Holly E. Miller, Jason C. Hicks
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Physics, Applied
Francisco A. Herrera, Gabriel H. Brown, Patrick Barboun, Nazli Turan, Prateek Mehta, William F. Schneider, Jason C. Hicks, David B. Go
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Chemistry, Multidisciplinary
Patrick Barboun, Prateek Mehta, Francisco A. Herrera, David B. Go, William F. Schneider, Jason C. Hicks
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Review
Chemistry, Physical
Prateek Mehta, Patrick Barboun, David B. Go, Jason C. Hicks, William F. Schneider
ACS ENERGY LETTERS
(2019)
Article
Engineering, Chemical
Feiyang Geng, Yolanda Bonita, Varsha Jain, Matthew Magiera, Neeraj Rai, Jason C. Hicks
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Physics, Applied
Nazli Turan, Patrick M. Barboun, Pritam K. Nayak, Jason C. Hicks, David B. Go
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Chemistry, Physical
Prateek Mehta, Patrick M. Barboun, Yannick Engelmann, David B. Go, Annemie Bogaerts, William F. Schneider, Jason C. Hicks
Article
Engineering, Chemical
Jeonghyun Ko, Jessica A. Muhlenkamp, Yolanda Bonita, Nicole J. LiBretto, Jeffrey T. Miller, Jason C. Hicks, William F. Schneider
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Editorial Material
Chemistry, Physical
Jason C. Hicks, Yan Yu, Ivan Mora-Sero
ACS ENERGY LETTERS
(2021)
Article
Engineering, Chemical
Jessica A. Muhlenkamp, Jason C. Hicks
Summary: The study found that in propane dehydrogenation catalysts, the Ni12P5/Ni2P mixed phase has the best combination of propylene production and selectivity, and it improves rates through the formation of new active sites.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Yolanda Bonita, Varsha Jain, Feiyang Geng, Timothy P. O'Connell, Norbert X. Ramos, Neeraj Rai, Jason C. Hicks
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Yolanda Bonita, Varsha Jain, Feiyang Geng, Timothy P. O'Connell, Woodrow N. Wilson, Neeraj Rai, Jason C. Hicks
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Physical
Prateek Mehta, Patrick Barboun, Francisco A. Herrera, Jongsik Kim, Paul Rumbach, David B. Go, Jason C. Hicks, William F. Schneider