Darensbourg, Donald individual record
Distinguished Professor
overview

The fundamentally interesting and challenging chemistry associated with carbon dioxide, coupled with its high potential as a source of chemical carbon, provides adequate justification for comprehensive investigations in this area. In our research program we have attempted to establish a clearer mechanistic view of carbon-hydrogen, carbon-carbon, and carbon-oxygen bond forming processes resulting from carbon dioxide insertion into M-H, M-C, and M-O bonds.



Relevant to the latter process our research has addressed the utilization of carbon dioxide in the development of improved synthetic routes for the production of polycarbonates. The hazardous and expensive production process currently in place industrially for these materials involves the interfacial polycondensation of phosgene and diols, accentuates the need for these studies. Although we and others have made significant advances in the synthesis of these useful thermoplastics from carbon dioxide and epoxides much of the fundamental knowledge concerning the reaction kinetics of these processes is lacking, due in part to the practical challenges associated with sampling and analyzing systems at elevated temperatures and pressures. This information is needed for making this process applicable to the synthesis of a variety of copolymers possessing a range of properties and uses. Our studies are examining in detail the mechanistic aspects of metal catalyzed carbon dioxide/epoxide coupling reactions employing in situ spectroscopy methods. For this purpose Fourier-transform infrared attenuated total refluctance (FTIR/ATR) spectroscopy is being utilized. Other related investigations involve the development of structural and reactivity models for the industrially prevalent double metal cyanide catalysts(DMC) used in polyethers and polycarbonate synthesis from epoxides or CO2/epoxides, respectively.

selected publications
Academic Articles430
  • Tran, D. K., Rashad, A. Z., Darensbourg, D. J., & Wooley, K. L. (2021). Sustainable synthesis of CO2-derived polycarbonates from d-xylose. Polymer Chemistry. 12(37), 5271-5278.
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  • Bhat, G. A., Rashad, A. Z., Ji, X., Quiroz, M., Fang, L., & Darensbourg, D. J. (2021). TEMPO Containing Radical Polymonothiocarbonate Polymers with Regio‐ and Stereo‐Regularities: Synthesis, Characterization, and Electrical Conductivity Studies. Angewandte Chemie. 133(38), 20902-20906.
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  • Bhat, G. A., Rashad, A. Z., Ji, X., Quiroz, M., Fang, L., & Darensbourg, D. J. (2021). TEMPO Containing Radical Polymonothiocarbonate Polymers with Regio‐ and Stereo‐Regularities: Synthesis, Characterization, and Electrical Conductivity Studies. Angewandte Chemie International Edition. 60(38), 20734-20738.
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  • Yue, T., Ren, B., Zhang, W., Lu, X., Ren, W., & Darensbourg, D. J. (2021). Randomly Distributed Sulfur Atoms in the Main Chains of CO2‐Based Polycarbonates: Enhanced Optical Properties. Angew Chem Int Ed Engl. 60(8), 4315-4321.
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  • Bhat, G. A., Darensbourg, M. Y., & Darensbourg, D. J. (2021). Copolymerization of propylene oxide and 13CO2 to afford completely alternating regioregular 13C-labeled Poly(propylene carbonate). Polymer Journal. 53(1), 215-218.
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Chapters4
  • Darensbourg, D. J. (2011). Salen Metal Complexes as Catalysts for the Synthesis of Polycarbonates from Cyclic Ethers and Carbon Dioxide. Advances in Polymer Science. Synthetic Biodegradable Polymers. 1-27. Springer Berlin Heidelberg.
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  • Darensbourg, D. J., Moncada, A. I., & Wilson, S. J. (2011). RingOpening Polymerization of Renewable SixMembered Cyclic Carbonates. Monomer Synthesis and Catalysis. Green Polymerization Methods. 163-200. Wiley.
  • Darensbourg, D. J., Andreatta, J. R., & Moncada, A. I. (2010). Polymers from Carbon Dioxide: Polycarbonates, Polythiocarbonates, and Polyurethanes. Carbon Dioxide as Chemical Feedstock. 213-248. Wiley-VCH Verlag GmbH & Co. KGaA.
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  • Joo, F., Kovacs, J., Katho, A., Benyei, A. C., Decuir, T., Darensbourg, D. J., Miedaner, A., & Dubois, D. L. (1998). (Meta-Sulfonatophenyl)Diphenylphosphine,Sodium Salt and Its Complexes with Rhodium(I), Ruthenium(II), Iridium(I). Inorganic Syntheses. 1-8.
Conference Papers157
  • Darensbourg, D. (2018). The synthesis of CO2-based polycarbonates with functionalities. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 256,
  • Darensbourg, D. (2017). Hydrogenase/epoxide-CO2 catalysis: Killing two birds with one cat. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 253,
  • Darensbourg, D. (2017). One-pot switchable catalytic processes involving the copolymerization of epoxides and carbon dioxide. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 253,
  • Wang, Y., Tsai, F., & Darensbourg, D. (2016). Carboxylic acid functionalized polycarbonates from CO2: A versatile platform for the synthesis of functional polycarbonates. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 251,
  • Wang, Y., & Darensbourg, D. (2016). Construction of Versatile and Functional Nanostructures Derived from CO2-based Polycarbonates. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 251,
chaired theses and dissertations
Email
d-darensbourg@tamu.edu
First Name
Donald
Last Name
Darensbourg
mailing address
Texas A&M University; Chemistry Department; 3255 TAMU
College Station, TX 77843-3255
USA