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Items: 1 to 50 of 66

1.

Zirconium Modification Promotes Catalytic Activity of a Single-Site Cobalt Heterogeneous Catalyst for Propane Dehydrogenation.

Zhao Y, Sohn H, Hu B, Niklas J, Poluektov OG, Tian J, Delferro M, Hock AS.

ACS Omega. 2018 Sep 13;3(9):11117-11127. doi: 10.1021/acsomega.8b00862. eCollection 2018 Sep 30.

2.

Spin-Correlated Radical Pairs as Quantum Sensors of Bidirectional ET Mechanisms in Photosystem I.

Poluektov OG, Niklas J, Utschig LM.

J Phys Chem B. 2019 Aug 23. doi: 10.1021/acs.jpcb.9b06636. [Epub ahead of print]

PMID:
31405283
3.

Semi-artificial Photosynthetic CO2 Reduction through Purple Membrane Re-engineering with Semiconductor.

Chen Z, Zhang H, Guo P, Zhang J, Tira G, Kim YJ, Wu YA, Liu Y, Wen J, Rajh T, Niklas J, Poluektov OG, Laible PD, Rozhkova EA.

J Am Chem Soc. 2019 Jul 31;141(30):11811-11815. doi: 10.1021/jacs.9b05564. Epub 2019 Jul 17.

PMID:
31305995
4.

Structure Control of a π-Conjugated Oligothiophene-Based Liquid Crystal for Enhanced Mixed Ion/Electron Transport Characteristics.

Dong BX, Liu Z, Misra M, Strzalka J, Niklas J, Poluektov OG, Escobedo FA, Ober CK, Nealey PF, Patel SN.

ACS Nano. 2019 Jul 23;13(7):7665-7675. doi: 10.1021/acsnano.9b01055. Epub 2019 Jun 18.

PMID:
31194507
5.

Reactivity of bio-inspired Cu(II) (N2/Py2) complexes with peroxide at room temperature.

Singh N, Botcha NK, Jones TM, Ertem MZ, Niklas J, Farquhar ER, Poluektov OG, Mukherjee A.

J Inorg Biochem. 2019 Aug;197:110674. doi: 10.1016/j.jinorgbio.2019.03.014. Epub 2019 Mar 21.

PMID:
31108242
6.

Molecular Cobalt Catalysts for H2 Generation with Redox Activity and Proton Relays in the Second Coordination Sphere.

Kohler L, Niklas J, Johnson RC, Zeller M, Poluektov OG, Mulfort KL.

Inorg Chem. 2019 Jan 22;58(2):1697-1709. doi: 10.1021/acs.inorgchem.8b03297. Epub 2018 Dec 26.

PMID:
30585716
7.

Z-scheme solar water splitting via self-assembly of photosystem I-catalyst hybrids in thylakoid membranes.

Utschig LM, Soltau SR, Mulfort KL, Niklas J, Poluektov OG.

Chem Sci. 2018 Oct 29;9(45):8504-8512. doi: 10.1039/c8sc02841a. eCollection 2018 Dec 7.

8.

Observation of current rectification by the new bimetallic iron(iii) hydrophobe [Fe(LN4O6)] on Au|LB-molecule|Au devices.

Weeraratne ADKI, Baydoun H, Shakya R, Niklas J, Xie L, Mao G, Stoian SA, Poluektov OG, Verani CN.

Dalton Trans. 2018 Oct 16;47(40):14352-14361. doi: 10.1039/c8dt03158d.

PMID:
30215065
9.

Nuclearity effects in supported, single-site Fe(ii) hydrogenation pre-catalysts.

Langeslay RR, Sohn H, Hu B, Mohar JS, Ferrandon M, Liu C, Kim H, Jeremy Kropf A, Yang C, Niklas J, Poluektov OG, Ercan Alp E, Ignacio-de Leon P, Sattelberger AP, Hock AS, Delferro M.

Dalton Trans. 2018 Aug 14;47(32):10842-10846. doi: 10.1039/c8dt02720j.

PMID:
30015817
10.

Spin Signature of the C60 Fullerene Anion: A Combined X- and D-Band EPR and DFT Study.

Niklas J, Mardis KL, Poluektov OG.

J Phys Chem Lett. 2018 Jul 19;9(14):3915-3921. doi: 10.1021/acs.jpclett.8b01613. Epub 2018 Jul 3.

11.

Immobilization of an Amphiphilic Molecular Cobalt Catalyst on Carbon Black for Ligand-Assisted Water Oxidation.

Baydoun H, Burdick J, Thapa B, Wickramasinghe L, Li D, Niklas J, Poluektov OG, Schlegel HB, Verani CN.

Inorg Chem. 2018 Aug 20;57(16):9748-9756. doi: 10.1021/acs.inorgchem.7b03252. Epub 2018 May 14.

PMID:
29756444
12.

Charge Separation and Triplet Exciton Formation Pathways in Small Molecule Solar Cells as Studied by Time-resolved EPR Spectroscopy.

Thomson SAJ, Niklas J, Mardis KL, Mallares C, Samuel IDW, Poluektov OG.

J Phys Chem C Nanomater Interfaces. 2017 Oct 19;121(41):22707-22719. doi: 10.1021/acs.jpcc.7b08217. Epub 2017 Sep 13.

13.

Optical charge state control of spin defects in 4H-SiC.

Wolfowicz G, Anderson CP, Yeats AL, Whiteley SJ, Niklas J, Poluektov OG, Heremans FJ, Awschalom DD.

Nat Commun. 2017 Nov 30;8(1):1876. doi: 10.1038/s41467-017-01993-4.

14.

Structural and Functional Characterization of a Short-Chain Flavodoxin Associated with a Noncanonical 1,2-Propanediol Utilization Bacterial Microcompartment.

Plegaria JS, Sutter M, Ferlez B, Aussignargues C, Niklas J, Poluektov OG, Fromwiller C, TerAvest M, Utschig LM, Tiede DM, Kerfeld CA.

Biochemistry. 2017 Oct 24;56(42):5679-5690. doi: 10.1021/acs.biochem.7b00682. Epub 2017 Oct 10.

PMID:
28956602
15.

Triplet-triplet energy transfer in artificial and natural photosynthetic antennas.

Ho J, Kish E, Méndez-Hernández DD, WongCarter K, Pillai S, Kodis G, Niklas J, Poluektov OG, Gust D, Moore TA, Moore AL, Batista VS, Robert B.

Proc Natl Acad Sci U S A. 2017 Jul 11;114(28):E5513-E5521. doi: 10.1073/pnas.1614857114. Epub 2017 Jun 26.

16.

Isolated, well-defined organovanadium(iii) on silica: single-site catalyst for hydrogenation of alkenes and alkynes.

Sohn H, Camacho-Bunquin J, Langeslay RR, Ignacio-de Leon PA, Niklas J, Poluektov OG, Liu C, Connell JG, Yang D, Kropf J, Kim H, Stair PC, Ferrandon M, Delferro M.

Chem Commun (Camb). 2017 Jun 29;53(53):7325-7328. doi: 10.1039/c7cc01876b.

PMID:
28492622
17.

Ru-protein-Co biohybrids designed for solar hydrogen production: understanding electron transfer pathways related to photocatalytic function.

Soltau SR, Dahlberg PD, Niklas J, Poluektov OG, Mulfort KL, Utschig LM.

Chem Sci. 2016 Dec 1;7(12):7068-7078. doi: 10.1039/c6sc03121h. Epub 2016 Aug 16.

18.

Intramolecular Hydrogen Bonding Restricts Gd-Aqua-Ligand Dynamics.

Boros E, Srinivas R, Kim HK, Raitsimring AM, Astashkin AV, Poluektov OG, Niklas J, Horning AD, Tidor B, Caravan P.

Angew Chem Int Ed Engl. 2017 May 8;56(20):5603-5606. doi: 10.1002/anie.201702274. Epub 2017 Apr 11.

19.

Through-Space Ultrafast Photoinduced Electron Transfer Dynamics of a C70-Encapsulated Bisporphyrin Covalent Organic Polyhedron in a Low-Dielectric Medium.

Ortiz M, Cho S, Niklas J, Kim S, Poluektov OG, Zhang W, Rumbles G, Park J.

J Am Chem Soc. 2017 Mar 29;139(12):4286-4289. doi: 10.1021/jacs.7b00220. Epub 2017 Mar 20.

PMID:
28287707
20.

Long Coherence Times in Nuclear Spin-Free Vanadyl Qubits.

Yu CJ, Graham MJ, Zadrozny JM, Niklas J, Krzyaniak MD, Wasielewski MR, Poluektov OG, Freedman DE.

J Am Chem Soc. 2016 Nov 9;138(44):14678-14685. Epub 2016 Oct 31.

PMID:
27797487
21.

Millisecond Coherence Time in a Tunable Molecular Electronic Spin Qubit.

Zadrozny JM, Niklas J, Poluektov OG, Freedman DE.

ACS Cent Sci. 2015 Dec 23;1(9):488-92. doi: 10.1021/acscentsci.5b00338. Epub 2015 Dec 2.

22.

Electronic Structure of Fullerene Acceptors in Organic Bulk-Heterojunctions: A Combined EPR and DFT Study.

Mardis KL, Webb JN, Holloway T, Niklas J, Poluektov OG.

J Phys Chem Lett. 2015 Dec 3;6(23):4730-5. doi: 10.1021/acs.jpclett.5b02111. Epub 2015 Nov 16.

23.

In the Bottlebrush Garden: The Structural Aspects of Coordination Polymer Phases formed in Lanthanide Extraction with Alkyl Phosphoric Acids.

Ellis RJ, Demars T, Liu G, Niklas J, Poluektov OG, Shkrob IA.

J Phys Chem B. 2015 Sep 3;119(35):11910-27. doi: 10.1021/acs.jpcb.5b05679. Epub 2015 Aug 13.

PMID:
26244450
24.

X-ray Crystallographic, Multifrequency Electron Paramagnetic Resonance, and Density Functional Theory Characterization of the Ni(P(Cy)2N(tBu)2)2(n+) Hydrogen Oxidation Catalyst in the Ni(I) Oxidation State.

Niklas J, Westwood M, Mardis KL, Brown TL, Pitts-McCoy AM, Hopkins MD, Poluektov OG.

Inorg Chem. 2015 Jul 6;54(13):6226-34. doi: 10.1021/acs.inorgchem.5b00445. Epub 2015 Jun 22.

25.

Aqueous light driven hydrogen production by a Ru-ferredoxin-Co biohybrid.

Soltau SR, Niklas J, Dahlberg PD, Poluektov OG, Tiede DM, Mulfort KL, Utschig LM.

Chem Commun (Camb). 2015 Jul 7;51(53):10628-31. doi: 10.1039/c5cc03006d.

PMID:
26051070
26.

Directionality of Electron Transfer in Type I Reaction Center Proteins: High-Frequency EPR Study of PS I with Removed Iron-Sulfur Centers.

Poluektov OG, Utschig LM.

J Phys Chem B. 2015 Oct 29;119(43):13771-6. doi: 10.1021/acs.jpcb.5b04063. Epub 2015 Jun 29.

PMID:
26029974
27.

Photoinduced Dynamics of Charge Separation: From Photosynthesis to Polymer-Fullerene Bulk Heterojunctions.

Niklas J, Beaupré S, Leclerc M, Xu T, Yu L, Sperlich A, Dyakonov V, Poluektov OG.

J Phys Chem B. 2015 Jun 18;119(24):7407-16. doi: 10.1021/jp511021v. Epub 2015 Jan 30.

PMID:
25599127
28.

Multiple quantum coherences from hyperfine transitions in a vanadium(IV) complex.

Zadrozny JM, Niklas J, Poluektov OG, Freedman DE.

J Am Chem Soc. 2014 Nov 12;136(45):15841-4. doi: 10.1021/ja507846k. Epub 2014 Nov 3.

PMID:
25340518
29.

Discovery of highly selective alkyne semihydrogenation catalysts based on first-row transition-metallated porous organic polymers.

Tanabe KK, Ferrandon MS, Siladke NA, Kraft SJ, Zhang G, Niklas J, Poluektov OG, Lopykinski SJ, Bunel EE, Krause TR, Miller JT, Hock AS, Nguyen ST.

Angew Chem Int Ed Engl. 2014 Nov 3;53(45):12055-8. doi: 10.1002/anie.201405080. Epub 2014 Sep 12.

PMID:
25219329
30.

Cobaloxime-based artificial hydrogenases.

Bacchi M, Berggren G, Niklas J, Veinberg E, Mara MW, Shelby ML, Poluektov OG, Chen LX, Tiede DM, Cavazza C, Field MJ, Fontecave M, Artero V.

Inorg Chem. 2014 Aug 4;53(15):8071-82. doi: 10.1021/ic501014c. Epub 2014 Jul 16.

31.

A bioinspired redox relay that mimics radical interactions of the Tyr-His pairs of photosystem II.

Megiatto JD Jr, Méndez-Hernández DD, Tejeda-Ferrari ME, Teillout AL, Llansola-Portolés MJ, Kodis G, Poluektov OG, Rajh T, Mujica V, Groy TL, Gust D, Moore TA, Moore AL.

Nat Chem. 2014 May;6(5):423-8. doi: 10.1038/nchem.1862. Epub 2014 Feb 9.

PMID:
24755594
32.

Charge Separation in P3HT:SWCNT Blends Studied by EPR: Spin Signature of the Photoinduced Charged State in SWCNT.

Niklas J, Holt JM, Mistry K, Rumbles G, Blackburn JL, Poluektov OG.

J Phys Chem Lett. 2014 Feb 6;5(3):601-6. doi: 10.1021/jz402668h. Epub 2014 Jan 28.

PMID:
26276616
33.

Protein delivery of a Ni catalyst to photosystem I for light-driven hydrogen production.

Silver SC, Niklas J, Du P, Poluektov OG, Tiede DM, Utschig LM.

J Am Chem Soc. 2013 Sep 11;135(36):13246-9. doi: 10.1021/ja405277g. Epub 2013 Sep 3.

PMID:
23985048
34.

High-frequency electron nuclear double-resonance spectroscopy studies of the mechanism of proton-coupled electron transfer at the tyrosine-D residue of photosystem II.

Chatterjee R, Coates CS, Milikisiyants S, Lee CI, Wagner A, Poluektov OG, Lakshmi KV.

Biochemistry. 2013 Jul 16;52(28):4781-90. doi: 10.1021/bi3012093. Epub 2013 Jul 1.

PMID:
23773007
35.

Highly-efficient charge separation and polaron delocalization in polymer-fullerene bulk-heterojunctions: a comparative multi-frequency EPR and DFT study.

Niklas J, Mardis KL, Banks BP, Grooms GM, Sperlich A, Dyakonov V, Beaupré S, Leclerc M, Xu T, Yu L, Poluektov OG.

Phys Chem Chem Phys. 2013 Jun 28;15(24):9562-74. doi: 10.1039/c3cp51477c. Epub 2013 May 14.

36.

Anticancer activity and biophysical reactivity of copper complexes of 2-(benzo[d][1,3]dioxol-5-ylmethylene)-N-alkylhydrazinecarbothioamides.

Beckford FA, Thessing J, Stott A, Holder AA, Poluektov OG, Li L, Seeram NP.

Inorg Chem Commun. 2012 Jan;15:225-229.

37.

The hydrogen catalyst cobaloxime: a multifrequency EPR and DFT study of cobaloxime's electronic structure.

Niklas J, Mardis KL, Rakhimov RR, Mulfort KL, Tiede DM, Poluektov OG.

J Phys Chem B. 2012 Mar 8;116(9):2943-57. doi: 10.1021/jp209395n. Epub 2012 Feb 29.

38.

Exploring the electron transfer pathways in photosystem I by high-time-resolution electron paramagnetic resonance: observation of the B-side radical pair P700(+)A1B(-) in whole cells of the deuterated green alga Chlamydomonas reinhardtii at cryogenic temperatures.

Berthold T, von Gromoff ED, Santabarbara S, Stehle P, Link G, Poluektov OG, Heathcote P, Beck CF, Thurnauer MC, Kothe G.

J Am Chem Soc. 2012 Mar 28;134(12):5563-76. doi: 10.1021/ja208806g. Epub 2012 Mar 16.

PMID:
22352450
39.

Structure and function of quinones in biological solar energy transduction: a high-frequency D-band EPR spectroscopy study of model benzoquinones.

Chatterjee R, Coates CS, Milikisiyants S, Poluektov OG, Lakshmi KV.

J Phys Chem B. 2012 Jan 12;116(1):676-82. doi: 10.1021/jp210156a. Epub 2011 Dec 14.

PMID:
22168351
40.

Role of water and carbonates in photocatalytic transformation of CO2 to CH4 on titania.

Dimitrijevic NM, Vijayan BK, Poluektov OG, Rajh T, Gray KA, He H, Zapol P.

J Am Chem Soc. 2011 Mar 23;133(11):3964-71. doi: 10.1021/ja108791u. Epub 2011 Feb 24.

PMID:
21348527
41.

Self-Trapped Excitons in Ionic-Covalent Silver Halide Crystals and Nanostructures: High-Frequency EPR, ESE, ENDOR and ODMR Studies.

Baranov PG, Romanov NG, Poluektov OG, Schmidt J.

Appl Magn Reson. 2010 Dec;39(4):453-486. Epub 2010 Oct 29.

42.

Light-induced alteration of low-temperature interprotein electron transfer between photosystem I and flavodoxin.

Utschig LM, Tiede DM, Poluektov OG.

Biochemistry. 2010 Nov 16;49(45):9682-4. doi: 10.1021/bi101507j. Epub 2010 Oct 25.

PMID:
20961074
43.

Electronic structure of the primary electron donor of Blastochloris viridis heterodimer mutants: high-field EPR study.

Ponomarenko NS, Poluektov OG, Bylina EJ, Norris JR.

Biochim Biophys Acta. 2010 Sep;1797(9):1617-26. doi: 10.1016/j.bbabio.2010.06.002. Epub 2010 Jun 11. Erratum in: Biochim Biophys Acta. 2010 Nov;1797(11):1838-40.

44.

Spin signatures of photogenerated radical anions in polymer-[70]fullerene bulk heterojunctions: high frequency pulsed EPR spectroscopy.

Poluektov OG, Filippone S, Martín N, Sperlich A, Deibel C, Dyakonov V.

J Phys Chem B. 2010 Nov 18;114(45):14426-9. doi: 10.1021/jp1012347. Epub 2010 Apr 14.

PMID:
20392099
45.

Spin-dynamics of the spin-correlated radical pair in photosystem I. Pulsed time-resolved EPR at high magnetic field.

Poluektov OG, Paschenko SV, Utschig LM.

Phys Chem Chem Phys. 2009 Aug 21;11(31):6750-6. doi: 10.1039/b906521k. Epub 2009 Jun 23.

PMID:
19639149
46.

Electron paramagnetic resonance study of radiation damage in photosynthetic reaction center crystals.

Utschig LM, Chemerisov SD, Tiede DM, Poluektov OG.

Biochemistry. 2008 Sep 2;47(35):9251-7. doi: 10.1021/bi800574e. Epub 2008 Aug 9.

PMID:
18690706
47.

A bioinspired construct that mimics the proton coupled electron transfer between P680*+ and the Tyr(Z)-His190 pair of photosystem II.

Moore GF, Hambourger M, Gervaldo M, Poluektov OG, Rajh T, Gust D, Moore TA, Moore AL.

J Am Chem Soc. 2008 Aug 13;130(32):10466-7. doi: 10.1021/ja803015m. Epub 2008 Jul 19.

PMID:
18642819
48.

Discovery of native metal ion sites located on the ferredoxin docking side of photosystem I.

Utschig LM, Chen LX, Poluektov OG.

Biochemistry. 2008 Mar 25;47(12):3671-6. doi: 10.1021/bi800038d. Epub 2008 Feb 23.

PMID:
18293937
50.

Geometry of hydrogen bonds formed by lipid bilayer nitroxide probes: a high-frequency pulsed ENDOR/EPR study.

Smirnova TI, Smirnov AI, Paschenko SV, Poluektov OG.

J Am Chem Soc. 2007 Mar 28;129(12):3476-7. Epub 2007 Mar 7. No abstract available.

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