Welcome to Kuzhelev Research Group


High-field EPR / DNP group

Nanoliter-Scale NMR of Biomolecule Solutions using Dynamic Nuclear Polarization

    1. Ahmad I., Roy P., Kuzhelev A.,* Sigurdsson S.,* Tetra-substituted BDPA radicals via click-chemistry and application to liquid-state DNP, Chem. Commun., 2026, 62, 10685–10689, DOI: 10.1039/d6cc01089j (*corresponding author).
    2. Thomas R., Kuppusamy S., Rüffer T., Weber M., Stephan V., Taube F., Kuzhelev A., Corzilius B., Kersting B., Ruben M., Mehring M., Atomically Precise Bismuth Oxido Nanoclusters as Hosts for Ln3+: Effects of Doping on Optical and Magnetic Properties of a Soluble Metal Oxide, Inorg. Chem. 2026, 65, 14758−14774, DOI:10.1021/acs.inorgchem.6c0140
    3. Kuzhelev A.,* 31P Dynamic Nuclear Polarization through the Solid Effect: Study of Biomolecules in Aqueous Solutions at 9.4 T, Anal. Chem., 2025, 97, 14890−14893 (*corresponding author)
    4. Elter M., Brosz M., Sucerquia D., Kuzhelev A., Kiesewetter D., Kurth M., Dreuw A.,PrisnerTh., Freudenberg J., Bunz U., Gräter F., Breaking Strong Alkynyl-Phenyl Bonds: Poly(para-phenylene ethynylene)s under Mechanical Stress, J. Am. Chem. Soc. 2024, 146, 27594−27599, DOI: 10.1021/jacs.4c08765.
    5. Dai D., Denysenkov V., Bagryanskaya E., Tormyshev V., Prisner Th., Kuzhelev A.,* 13C Hyperpolarization of Viscous Liquids by Transfer of Solid-Effect 1H Dynamic Nuclear Polarization at High Magnetic Field. J. Phys. Chem. Lett. 2023, 14 (31), 7059–7064, DOI: 10.1021/acs.jpclett.3c01732 (*corresponding author).
    6. Kuzhelev A.,* Denysenkov V., Ahmad I., Rogozhnikova O., Trukhin D., Bagryanskaya E., Tormyshev V., Sigurdsson S., Prisner Th., Solid-Effect Dynamic Nuclear Polarization in Viscous Liquids at 9.4 T Using Narrow-Line Polarizing Agents. J. Am. Chem. Soc. 2023, 145 (18), 10268–10274, DOI: 10.1021/jacs.3c01358 (*corresponding author).
    7. Kurth M., Barayeu U., Gharibi H., Kuzhelev A., Riedmiller K., Zilke J., Noack K., Denysenkov V., Kappl R., Prisner Th., Zubarev R., Dick T., Gräter F., DOPA Residues Endow Collagen with Radical Scavenging Capacity, Angew. Chem. Int. Ed. 2023, 62, e202216610, DOI: 10.1002/anie.202216610.
  • ​Available Facilities

    ​​

    Spectrometer

    Room

    Frequency

    CW

    Pulsed

    Temperature

    Comments

    Bruker EMX nano

    N120, 9

    9-10 GHz

    X-band

    Yes

    No

    298 K

    Teaching (PC Praktikum)

    Home-built

    G-band

    N140, 5

    180 GHz

    G-band

    Yes

    Yes

    4 – 300 K

    cw EPR, ED-spectra, PELDOR

    AWG

    home-built

    N140, 7

    9-10 GHz

    X-band

    No

    Yes

    4 – 300 K

    Shaped pulses

    Bruker Elexsys E500

    N140, 7

    9-10 GHz

     X-band

    Yes

    No

    4 – 400 K

    Spin counting

    Bruker Elexsys E580

    N140, 12

    9-10/33-35 GHz

    X-/Q-band

    Yes

    Yes

    4 – 300 K

    PELDOR, ENDOR,

    ESEEM, cw-DNP

    Bruker Elexsys E780

    NMR hall

    263 GHz

    J-band

    Yes

    Yes

    4 – 300 K

    cw EPR,

    ED-spectra, ENDOR

    Home-built DNP at 9.4 T

    NMR hall

    263 GHz

    J-band

    Yes

    No

    280 – 340 K

    Liquid-state DNP


    Dr. Andrei Kuzhelev

    Junior Group Leader 

    Building N140, Room 18
    +49 (0) 69-798-29593
    email: kuzhelev (at) chemie.uni-ftrankfurt.de

    Karen Heinrich
    Administration

    Building N120, Room 226 
    +49 (0) 69-798-29708 
    email: heinrich (at) chemie.uni-frankfurt.de 


    Dr. Vasyl Denysenkov
    Senior Scientist, Dipl. Phys.

    Building N140, Room 11
    +49 (0) 69-798-29183
    email: denysenkov (at) em.uni-frankfurt.de

    Bisera Krstić
    Student Internship Assistant, CTA, Dipl. Chem.

    Building N140, Room 13
    +49 (0) 69-798-29423
    email: krstic (at) em.uni-frankfurt.de

    Ravindu Pathirana Hewage
    PhD Student

    Building N140, Room 11
    e-mail:  PathiranaHewage (at) em.uni-frankfurt.de

    Dr. Sören Schlittenhardt
    Postdoc

    Building N140, Room 19
    e-mail: schlittenhardt (at) em.uni-frankfurt.de

    Oumaima Abzaoui

    Master Student

    Building N140, Room 11
    e-mail:  abzaoui (at) em.uni-frankfurt.de

    1. Ahmad I., Roy P., Kuzhelev A.,* Sigurdsson S.,* Tetra-substituted BDPA radicals via click-chemistry and application to liquid-state DNP, Chem. Commun., 2026, 62, 10685–10689, DOI: 10.1039/d6cc01089j (*corresponding author).
    2. Thomas R., Kuppusamy S., Rüffer T., Weber M., Stephan V., Taube F., Kuzhelev A., Corzilius B., Kersting B., Ruben M., Mehring M., Atomically Precise Bismuth Oxido Nanoclusters as Hosts for Ln3+: Effects of Doping on Optical and Magnetic Properties of a Soluble Metal Oxide, Inorg. Chem. 2026, 65, 14758−14774, DOI:10.1021/acs.inorgchem.6c0140
    3. Kuzhelev A.,* 31P Dynamic Nuclear Polarization through the Solid Effect: Study of Biomolecules in Aqueous Solutions at 9.4 T, Anal. Chem., 2025, 97, 14890−14893 (*corresponding author)
    4. Elter M., Brosz M., Sucerquia D., Kuzhelev A., Kiesewetter D., Kurth M., Dreuw A.,PrisnerTh., Freudenberg J., Bunz U., Gräter F., Breaking Strong Alkynyl-Phenyl Bonds: Poly(para-phenylene ethynylene)s under Mechanical Stress, J. Am. Chem. Soc. 2024, 146, 27594−27599, DOI: 10.1021/jacs.4c08765.
    5. Dai D., Denysenkov V., Bagryanskaya E., Tormyshev V., Prisner Th., Kuzhelev A.,* 13C Hyperpolarization of Viscous Liquids by Transfer of Solid-Effect 1H Dynamic Nuclear Polarization at High Magnetic Field. J. Phys. Chem. Lett. 2023, 14 (31), 7059–7064, DOI: 10.1021/acs.jpclett.3c01732 (*corresponding author).
    6. Kuzhelev A.,* Denysenkov V., Ahmad I., Rogozhnikova O., Trukhin D., Bagryanskaya E., Tormyshev V., Sigurdsson S., Prisner Th., Solid-Effect Dynamic Nuclear Polarization in Viscous Liquids at 9.4 T Using Narrow-Line Polarizing Agents. J. Am. Chem. Soc. 2023, 145 (18), 10268–10274, DOI: 10.1021/jacs.3c01358 (*corresponding author).
    7. Kurth M., Barayeu U., Gharibi H., Kuzhelev A., Riedmiller K., Zilke J., Noack K., Denysenkov V., Kappl R., Prisner Th., Zubarev R., Dick T., Gräter F., DOPA Residues Endow Collagen with Radical Scavenging Capacity, Angew. Chem. Int. Ed. 2023, 62, e202216610, DOI: 10.1002/anie.202216610.
  • ​Available Facilities

    ​​

    Spectrometer

    Room

    Frequency

    CW

    Pulsed

    Temperature

    Comments

    Bruker EMX nano

    N120, 9

    9-10 GHz

    X-band

    Yes

    No

    298 K

    Teaching (PC Praktikum)

    Home-built

    G-band

    N140, 5

    180 GHz

    G-band

    Yes

    Yes

    4 – 300 K

    cw EPR, ED-spectra, PELDOR

    AWG

    home-built

    N140, 7

    9-10 GHz

    X-band

    No

    Yes

    4 – 300 K

    Shaped pulses

    Bruker Elexsys E500

    N140, 7

    9-10 GHz

     X-band

    Yes

    No

    4 – 400 K

    Spin counting

    Bruker Elexsys E580

    N140, 12

    9-10/33-35 GHz

    X-/Q-band

    Yes

    Yes

    4 – 300 K

    PELDOR, ENDOR,

    ESEEM, cw-DNP

    Bruker Elexsys E780

    NMR hall

    263 GHz

    J-band

    Yes

    Yes

    4 – 300 K

    cw EPR,

    ED-spectra, ENDOR

    Home-built DNP at 9.4 T

    NMR hall

    263 GHz

    J-band

    Yes

    No

    280 – 340 K

    Liquid-state DNP


    Dr. Andrei Kuzhelev

    Junior Group Leader 

    Building N140, Room 18
    +49 (0) 69-798-29593
    email: kuzhelev (at) chemie.uni-ftrankfurt.de

    Karen Heinrich
    Administration

    Building N120, Room 226 
    +49 (0) 69-798-29708 
    email: heinrich (at) chemie.uni-frankfurt.de 


    Dr. Vasyl Denysenkov
    Senior Scientist, Dipl. Phys.

    Building N140, Room 11
    +49 (0) 69-798-29183
    email: denysenkov (at) em.uni-frankfurt.de

    Bisera Krstić
    Student Internship Assistant, CTA, Dipl. Chem.

    Building N140, Room 13
    +49 (0) 69-798-29423
    email: krstic (at) em.uni-frankfurt.de

    Ravindu Pathirana Hewage
    PhD Student

    Building N140, Room 11
    e-mail:  PathiranaHewage (at) em.uni-frankfurt.de

    Dr. Sören Schlittenhardt
    Postdoc

    Building N140, Room 19
    e-mail: schlittenhardt (at) em.uni-frankfurt.de

    Oumaima Abzaoui

    Master Student

    Building N140, Room 11
    e-mail:  abzaoui (at) em.uni-frankfurt.de