synthesis ~ catalysis ~ spectroscopy
NIPPE RESEARCH GROUP
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ABOUT

Thanks for visiting the Nippe Group website! We are an inorganic research group at Texas A&M with interests in the areas of molecular electrocatalysis and molecular magnetism. Our research explores various inorganic approaches to contribute to the development of novel systems for molecular solar energy conversion, small molecule activation, and molecules for information storage. We study fundamental aspects of reactivity and electronic structure aiming at identifying critical design elements of molecular architectures that will lead to new discoveries and systematic performance improvements. Synthetic methods build the foundation of the group, which are complimented by a broad array of spectroscopic and electrochemical techniques.

We are seeking students who are interested in creative inorganic synthesis, structure- function relationships in catalysis, and electronic structure of heterometallic d-block/ f-block complexes.

Electrocatalysis

Activation and energy efficient conversion of small molecules such as CO2 and N2 remains a challenging area of global importance. Development of efficient electrocatalytic systems for CO2 reduction will establish artificial photosynthetic systems. Our research targets systematic design and synthesis of transition metal based electrocatalytic systems to investigate: secondary coordination sphere effects on electrocatalysis; intramolecular interactions between imidazolium and CO2 through functionalized Lehn-type catalysts; and modified reaction pathways to further understand catalytic cycles.

Molecular Magnetism

Single-molecule magnets (SMMs) offer the unique possibility for molecular scale, high- density data storage using the switchable orientation of their molecular spin. Lanthanides, in particular, have a lot of potential due to their unquenched orbital momentum. By optimizing ligand field, we can increase magnetic barrier and improve magnetic properties. We are also interested in multifunctional molecules that can alter their physical or chemical properties predictively in the presence of an outside trigger. This includes the use of reversible electron transfer to alter magnetization dynamics in lanthanide complexes.

Heterometallic Interactions

We are working on elucidating the effects of heterometallic interactions on static and dynamic magnetic properties as well as spectroscopic features
of lanthanide ions. The fundamental scientific understanding of these interactions has been explored
in complexes containing the first reported lanthanide-transition metal bonds. Understanding the consequences of these bonding and electronic interactions on the dynamic magnetic properties of various lanthanide ions will guide the development of new molecules for future data processing and storage.

author

ACKNOWLEDGEMENTS

We are thankful for support from:

Publications

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Trends in Trigonal Prismatic Ln-[1]ferrocenophane Complexes

Molecular Magnetism, Computations

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Synergistic Effects of Imidazolium-Functionalization on fac-Mn(CO)3 Bipyridine Catalyst Platforms

Electrocatalysis, CO2 Reduction

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Towards understanding of Ln-TM bonding: Investigations of the first
Ce-Fe bonded complex

Heterobimetallics, Molecular Magnetism

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Structure and Magnetization Dynamics of Dy-Fe and Dy-Ru Bonded Complexes

Heterobimetallics, Computations

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Hard Single-Molecule Magnet Behavior By a Linear Trinuclear Lanthanide-[1]Metallocenophane Complex

Molecular Magnetism

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Transition metal redox switches for reversible SMM behaviour in Dy and Er bisdiamidoferrocene complexes

Molecular Magnetism, Redox Switchability

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30. Latendresse, T. P.; Vieru, V.; Uphadayay, A.; Bhuvanesh, N. S.; Chibotaru, L. F.; Nippe, M. "Trends in Trigonal Prismatic Ln-[1]ferrocenophane Complexes and Discovery of a Ho3+ Single-Molecule Magnet" Chem. Sci. 2020, Accepted Manuscript; https://doi.org/10.1039/D0SC01197E.

29. Zee, D. Z.; Nippe, M.; King, A. E.; Chang, C. J.; Long, J. R. "Tuning Second Coordination Sphere Interactions in Polypyridyl–Iron Complexes to Achieve Selective Electrocatalytic Reduction of Carbon Dioxide to Carbon Monoxide" Inorg. Chem. 2020, Accepted Manuscript; https://doi.org/10.1021/acs.inorgchem.0c00455.

28. Chen, H.; Mahapatra, R.; Nippe, M.; Lu, M.; Bunting, P. C.; Melia, T.; Rajendran, S.; Gratta, G.; Long, J. R. "Quantum Detection using Magnetic Avalanches in Single-Molecule Magnets" 2020; arXiv:2002.09409.

27. Sung, S.; Li, X.; Wolf, L. M.; Meeder, J. R.; Bhuvanesh, N. S.; Grice, K. A.; Panetier, J. A.; Nippe, M. "Synergistic Effects of Imidazolium-Functionalization on fac-Mn(CO)3 Bipyridine Catalyst Platforms for Electrocatalytic Carbon Dioxide Reduction" J. Am. Chem. Soc. 2019, 141, 6569-6582; https://doi.org/10.1021/jacs.8b13657.

26. Burns, C. P.; Yang, X.; Sung, S.; Wofford, J. D.; Bhuvanesh, N. S.; Hall, M. B.; Nippe, M. "Towards understanding of lanthanide-transition metal bonding: investigations of the first Ce-Fe bonded complex" Chem. Commun. 2018, 54, 10893-10896; http://dx.doi.org/10.1039/C8CC05243C.

25. Latendresse, T. P.; Vieru, V.; Wilkins, B. O.; Bhuvanesh, N. S.; Chibotaru, L. F.; Nippe, M. "Magnetic Properties of a Terbium-[1]ferrocenophane Complex: Analogies Between Lanthanide- ferrocenophane and Lanthanide-bis-phthalocyanine Complexes" Angew. Chem. Int. Ed. 2018, 57, 8164-8169; https://doi.org/ 10.1002/anie.201804075.

24. Burns, C. P.; Yang, X.; Wofford, J. D.; Bhuvanesh, N. S.; Hall, M. B.; Nippe, M. "Structure and Magnetization Dynamics of Dy-Fe and Dy-Ru Bonded Complexes" Angew. Chem. Int. Ed. 2018, 57, 8144-8148; https://doi.org/10.1002/anie.201803761.

23. Latendresse, T. P.; Bhuvanesh, N. S.; Nippe, M. "Hard Single-Molecule Magnet Behavior By a Linear Trinuclear Lanthanide-[1]Metallocenophane Complex" J. Am. Chem. Soc. 2017, 139, 14877-14880; https://doi.org/10.1021/jacs.7b08690.

22. Dickie, C. M.; Laughlin, A. L.; Wofford, J. D.; Bhuvanesh, N. S.; Nippe, M. "Transition metal redox switches for reversible 'on/off' and 'slow/fast' single-molecule magnet behaviour in dysprosium and erbium bisdiamidoferrocene complexes" Chem. Sci. 2017, 8, 8039-8049; https://doi.org/10.1039/C7SC03380J.

21. Sung, S.; Kumar, D.; Gil-Sepulcre, M.; Nippe, M. "Electrocatalytic CO2 Reduction by Imidazolium-Functionalized Molecular Catalysts" J. Am. Chem. Soc. 2017, 139, 13993-13996; https://doi.org/10.1021/jacs.7b07709.

20. Burns, C. P.; Wilkins, B. O.; Dickie, C. M.; Latendresse, T. P.; Vernier, L.; Vignesh, K. R.; Bhuvanesh, N. S.; Nippe, M. "A comparative study of magnetization dynamics in dinuclear dysprosium complexes featuring bridging chloride or trifluoromethanesulfonate ligands" Chem. Commun. 2017, 53, 8419-8422; https://doi.org/10.1039/c7cc02457f.

19. Latendresse, T. P.; Bhuvanesh, N. S.; Nippe, M. "Slow Magnetic Relaxation in a Lanthanide- [1]Metallocenophane Complex" J. Am. Chem. Soc. 2017, 139, 8058-8061; https://doi.org/10.1021/jacs.7b01499.

18. Kashif, M. K.; Milhuisen, R. A.; Nippe, M.; Hellerstedt, J.; Zee, D. Z.; Duffy, N. W.; Halstead, B.; De Angelis, F.; Fantacci, S.; Fuhrer, M. S.; Chang, C. J.; Cheng, Y.-B.; Long, J. R.; Spiccia, L.; Bach, U. "Cobalt Polypyridyl Complexes as Transparent Solution- Processable Solid-State Charge Transport Materials" Adv. Energy Mater. 2016, 1600874; https://doi.org/10.1002/aenm.201600874.

17. Dickie, C. M.; Nippe, M. "Magnetization Dynamics of a Heterometallic Dy-isocarbonyl Complex" Inorg. Chem. Front. 2016, 3, 97-103; https://doi.org/10.1039/C5QI00224A.

16. Di Giovanni, C.; Gimbert-Surinach, C.; Nippe, M.; Benet-Buchholz, J.; Long, J.R.; Sala, X.; Llobet, A. "Dinuclear Cobalt Complexes of a Decadentate Ligand Scaffold: Hydrogen Evolution and Oxygen Reduction Catalysis" Chem. Eur. J. 2016, 22, 361-369; https://doi.org/10.1002/chem.201503567.

15. King, A.E.; Nippe, M.; Atanasov, M.; Chantarojsiri, T.; Wray, C.A.; Bill, E.; Neese, F.; Long, J.R.; Chang, C.J. "A Well-Defined Terminal Vanadium(III) Oxo Complex" Inorg. Chem. 2014, 53, 11388-11395; https://doi.org/10.1021/ic5010177.

14. Demir, S.; Nippe, M.; Gonzalez, M.I.; Long, J.R. "Exchange coupling and magnetic blocking in dilanthanide complexes bridged by the multi-electron redox-active ligand 2,3,5,6-tetra(2-pyridyl) pyrazine" Chem. Sci. 2014, 5, 4701-4711; https://doi.org/10.1039/C4SC02154A.

13. Brogden, D.W.; Turov, Y.; Nippe, M.; Li Manni, G.; Hillard, E.A.; Clerac, R.; Gagliardi, L.; Berry, J.F. "Oxidative Stretching of Metal-Metal Bonds to Their Limits" Inorg. Chem. 2014, 53, 4777-4790; https://doi.org/10.1021/ic5007204.

12. Khnayzer, R.S.; Thoi, V.S.; Nippe, M.; King, A.E.; Jurss, J.W.; El Roz, K.A.; Long, J.R.; Chang, C.J.; Castellano, F.N. "Towards a comprehensive understanding of visible-light photogeneration of hydrogen from water using cobalt(ii) polypyridyl catalysts" Energy Environ. Sci. 2014, 7, 1477-1488; https://doi.org/10.1039/C3EE43982H.

11. Nippe, M.; Khnayzer, R.S.; Panetier, J.A.; Zee, D.Z.; Olaiya, B.S.; Head-Gordon, M.; Chang, C.J.; Castellano, F.N.; Long, J.R. "Catalytic proton reduction with transition metal complexes of the redox-active ligand bpy2PYMe" Chem. Sci. 2013, 4, 3934-3945; https://doi.org/10.1039/C3SC51660A.

10. Kashif, M.K.; Nippe, M.; Duffy, N.W.; Forsyth, C.M.; Chang, C.J.; Long, J.R.; Spiccia, L.; Bach, U. "Stable dye-sensitized solar cell electrolytes based on cobalt(II)/(III) complexes of a hexadentate pyridyl ligand" Angew. Chem. Int. Ed. 2013, 52, 5527-5531; https://doi.org/10.1002/anie.201300070.

9. Demir, S.; Zadrozny, J.M.; Nippe, M.; Long, J.R. "Exchange coupling and magnetic blocking in bipyrimidyl radical-bridged dilanthanide complexes" J. Am. Chem. Soc. 2012, 134, 18546-18549; https://doi.org/10.1021/ja308945d.

8. Nippe, M.; Goodman, S.M.; Fry, C.G.; Berry, J.F. "Chemically reversible four-electron oxidation and reduction utilizing two inorganic functional groups" J. Am. Chem. Soc. 2011, 133, 2856-2859; https://doi.org/10.1021/ja1114248.

7. Nippe, M.; Bill, E.; Berry, J.F. "Group 6 Complexes with Iron and Zinc Heterometals: Understanding the Structural, Spectroscopic, and Electrochemical Properties of a Complete Series of MM...M' Compounds" Inorg. Chem. 2011, 50, 7650-7661; https://doi.org/10.1021/ic2011315.

6. Nippe, M.; Turov, Y., Berry, J.F. "Remote Effects of Axial Ligand Substitution in Heterometallic CrCr...M Chains" Inorg. Chem. 2011, 50, 10592-10599; https://doi.org/10.1021/ic2011309.

5. Nippe, M.; Wang, J.; Bill, E.; Hope, H.; Dalal, N.S.; Berry, J.F. "Crystals in Which Some Metal Atoms are More Equal Than Others: Inequalities From Crystal Packing and Their Spectroscopic/ Magnetic Consequences" J. Am. Chem. Soc. 2010, 132, 14261-14272; https://doi.org/10.1021/ja106510g.

4. Nippe. M.; Victor, E.; Berry, J.F. "Oxidation Chemistry of Axially Protected Mo2 and W2 Quadruply Bonded Compounds" Inorg. Chem. 2009, 48, 11889-11895; https://doi.org/10.1021/ic901965b.

3. Nippe, M.; Timmer, G.H.; Berry, J.F. "Remarkable regioselectivity in the preparation of the first heterotrimetallic MoW...Cr chain" Chem. Commun. 2009, 4357-4359; https://doi.org/10.1039/B907402C.

2. Nippe, M.; Victor, E.; Berry, J.F. "Do metal-metal multiply-bonded "ligands" have a trans influence? Structural and magnetic comparisons of heterometallic CrCr...Co and MoMo...Co interactions" Eur. J. Inorg. Chem. 2008, 5569-5572; https://doi.org/10.1002/ejic.200801001.

1. Nippe, M.; Berry, J.F. "Introducing a Metal-Metal Multiply Bonded Group as an "Axial Ligand" to Iron: Synthetic Design of a Linear Cr-Cr...Fe Framework" J. Am. Chem. Soc. 2007, 129, 12684-12685; https://doi.org/10.1021/ja076337j.

Our Group


author

MICHAEL NIPPE

Princpal Investigator
Assistant Professor of Chemistry
ResearcherID
- nippe@chem.tamu.edu -

PostDoc, UC Berkeley
PhD Chemistry, UW Madison

Trevor Latendresse

TREVOR LATENDRESSE

Graduate Student, 5th year
- trevor-lat@tamu.edu -

B.S. Chemistry, University of Tennessee at Chattanooga
previous publications

Branford Wilkins

BRANFORD WILKINS

Graduate Student, 4th year
- branfordw@tamu.edu -

B.S. Chemistry, Univeristy of South Carolina-Columbia

Gabrielle Risica

GABRIELLE RISICA

Graduate Student, 3rd year
- gabrielle.risica@tamu.edu -

B.A. Liberal Arts, Sarah Lawrence College


author

JEREMY MEEDER

Graduate Student, 3rd year
- jrmeeder@tamu.edu -

B.S. Chemistry, University of Michigan


author

GAYLE BORNOVSKI

Graduate Student, 2nd year
- gbornovski@tamu.edu -

B.S. Chemistry, Brandeis Univeristy


author

JAMES VANJAK

Graduate Student, 2nd year
- jcvanjak@tamu.edu -

B.S. Chemistry, NC State Univeristy


author

ZHEN 'CARMEN' NI

Graduate Student, 1st year
- niz_1@tamu.edu -

B.S. Chemical Engineering & Chemistry,
Rose-Hulman Institute of Technology
previous publications

author

SEUNGJIN OH

Graduate Student, 1st year
- ohsj0601@tamu.edu -

M.S. Chemistry, Chung-Ang University
B.S. Chemistry, Chung-Ang University
previous publications

author

DAVID ROTHENBERG

Undergraduate Student, Sophomore
- drothenberg@tamu.edu -

Major: Biomedical Sciences


GROUP ALUMNI


Postdoctoral Researchers


Dr. Apoorva Upadhyay; INDO-US Fellow 2017-2018

Postdoctoral Fellow, Wayne-State University

Dr. Davinder Kumar; Postdoctoral Researcher 2015-2016

Assistant Professor, Thapar University


Graduate Researchers


Dr. Courtney Dickie; Doctoral Student 2014-2018

TD Module and Integration Yield Engineer, Intel

Dr. Corey Burns; Doctoral Student 2014-2019

Chemistry Instructor, University of Illinois-Springfield

Dr. Siyoung Sung; Doctoral Student 2014-2019

Postdoctoral Fellow, Colorado State University

Soomin Park; Masters Student 2015-2016

Marcos Gil-Sepulcre; Visiting Student Summer 2016


Undergraduate Researchers


Willie Langston; Summer 2015

Dana Sublett; 2015-2016

Larry Vernier; 2015-2017

Adam Burkhard; 2015-2017

Emily Brackhahn; 2015-2017

Steven Granzin; 2016-2017

Zachary Grant; 2018

Jesse Martinez; REU 2019

Contact Us

If you have any questions or want to be a part of our research, please contact us!

NIPPE RESEARCH GROUP

Department of Chemistry

Texas A&M University

3255 TAMU, 580 Ross Street, College Station, TX 77843
Office Location: 322 Chemistry

+1 979 862 4471

nippe@chem.tamu..edu