The Effect of Torsional Motion on Multiexciton Formation through Intramolecular Singlet Fission in Ferrocene-Bridged Pentacene Dimers
R. Hayasaka, H. Sakai, M. Fuki, T. Okamoto, R. Khan, M. Higashi, N. V. Tkachenko, Y. Kobori, T. Hasobe
Publications
Publications 2024
Effect of Single-Crystal TiO2/Perovskite Band Alignment on the Kinetics of Electron Extraction
X. Chen, H. P. Pasanen, R. Khan, N. V. Tkachenko, C. Janáky, and G. F. Samu
Publications 2023
Hole Localization and Ultrafast Electron Transfer Dynamics in CuInS2/Organic Molecule Composite
J. Dana, A. Houplin, and N. V. Tkachenko
Electron-Deficient Phenanthrenequinone Derivative for Photoactivated Hydrogen Atom Transfer Mediated Oxidation of Secondary Alcohols
J. Talvitie, I. Alanko, A. Lenarda, N. Durandin, N. Tkachenko, M. Nieger, J. Helaja
Long-Lived Photo-Response of Multi-Layer N-Doped Graphene-Based Films
J. Odutola, H. Szalad, J. Albero, H. García, and N. V. Tkachenko
Laterally Bound Co Porphyrin on CdTe QD: A Long-Lived Charge-Separated Nanocomposite
J. Dana, R. Khan, T. Weckman, K. Honkala, and N. V. Tkachenko
Thermodynamic Control of Intramolecular Singlet Fission and Exciton Transport in Linear Tetracene Oligomers
S. Nakamura, H. Sakai, M. Fuki, R. Ooie, F. Ishiwari, A. Saeki, N. V. Tkachenko, Y. Kobori, T. Hasobe
Insights into the Role of Graphitic Carbon Nitride as a Photobase in Proton-Coupled Electron Transfer in (sp3)C−H Oxygenation of Oxazolidinones
A. Galushchinskiy, Y. Zou, J. Odutola, P. Nikačević, J-W. Shi, N. Tkachenko, N. López, P. Farràs, O. Savateev
Is carrier mobility a limiting factor for charge transfer in TiO2 /Si devices? A study by transient reflectance spectroscopy
R. Khan, H. P. Pasanen, H. Ali-Löytty , H. M. Ayedh, J. Saari, V. Vähänissi, M. Valden, H. Savin, N. V. Tkachenko
Publications 2022
Thermodynamic Control of Intramolecular Singlet Fission and Exciton Transport in Linear Tetracene Oligomers
S. Nakamura, H. Sakai, M. Fuki, R. Ooie, F. Ishiwari, A. Saeki, N. V. Tkachenko, Y. Kobori, T. Hasobe
Effect of the Donor/Acceptor Size on the Rate of Photo-Induced Electron Transfer
Tkachenko, N.
Tunable Ti3+-Mediated Charge Carrier Dynamics of Atomic Layer Deposition-Grown Amorphous TiO2
J. Saari, H. Ali-Löytty, M. M. Kauppinen, M. Hannula, R. Khan, K. Lahtonen, L. Palmolahti, A. Tukiainen, H. Grönbeck, N. V. Tkachenko, M. Valden
Photoinduced Processes in Metal Oxide Nanomaterials
N. V. Tkachenko, R. Khan
Enhancing the Microstructure of Perovskite-Inspired Cu-Ag-Bi-I Absorber for Efficient Indoor Photovoltaics
G. K. Grandhi, B. Al-Anesi, H. P. Pasanen, H. Ali-Löytty, K. Lahtonen, S. Granroth, N. Christian, A. Matuhina, M. Liu, A. Berdin, V. Pecunia, P. Vivo
Hydrogen bonding drives the self-assembling of carbazole-based hole-transport material for enhanced efficiency and stability of perovskite solar cells
C. Wang, M. Liu, S. Rahman, H. P. Pasanen, J. Tian, J. Li, Z. Deng, H. Zhang, P. Vivo
Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaics
N. Lamminen, G. K. Grandhi, F. Fasulo, A. Hiltunen, H. Pasanen, M. Liu, B. Al-Anesi, A. Efimov, H. Ali-Löytty, K. Lahtonen, P. Mäkinen, A. Matuhina, A. B. Muñoz-García, M. Pavone, P. Vivo
Ultrafast Singlet Fission and Efficient Carrier Transport in a Lamellar Assembly of Bis[(trialkoxyphenyl)ethynyl]pentacene
H. Sakai, K. Yoshino, Y. Shoji, T. Kajitani, J. Pu, T. Fukushima, T. Takenobu, N. V. Tkachenko, T. Hasobe
Molecular Design Strategy for High-Yield and Long-Lived Individual Doubled Triplet Excitons through Intramolecular Singlet Fission
T. Hasobe, S. Nakamura, N. V. Tkachenko, Y. Kobori
Publications 2021
There is plenty of room at the top: generation of hot charge carriers and their applications in perovskite and other semiconductor-based optoelectronic devices
I. Ahmed, L. Shi, H. Pasanen, P. Vivo, P. Maity, M. Hatamvand, Y. Zhan
Fast non-ambipolar diffusion of charge carriers and the impact of traps and hot carriers on it in CsMAFA perovskite and GaAs
H. Pasanen, M. Liu, H. Kahle, P. Vivo, N. Tkachenko
Comparison of the heat-treatment effect on carrier dynamics in TiO2 thin films deposited by different methods
R. Khan, H. Ali-Löytty, A. Tukiainen, N. Tkachenko
Synergetic Role of Conformational Flexibility and Electronic Coupling for Quantitative Intramolecular Singlet Fission
S. Nakamura, H. Sakai, H. Nagashima, M. Fuki, K. Onishi, R. Khan, Y. Kobori, N. V. Tkachenko, and T. Hasobe
Supramolecular Singlet Fission of Pentacene Dimers within Polyaromatic Capsules
L. Catti, H. Narita, Y. Tanaka, H. Sakai, T. Hasobe, N. V. Tkachenko, M. Yoshizawa
Ultrathin-Walled 3D Inorganic Nanostructured Networks Templated from Cross-Linked Cellulose Nanocrystal Aerogels
A. Hiltunen, T. Or, K. Lahtonen, H. Ali-Löytty, N. Tkachenko, M. Valden, E. Sarlin, E. D. Cranston, J. M. Moran-Mirabal, J. Vapaavuori
Voltage-induced fluorescence lifetime imaging of a BODIPY derivative in giant unilamellar vesicles as potential neuron membrane mimics
D. Sirbu, L. Zeng, P. G. Waddell, N. V. Tkachenko, S. W. Botchway, A. C. Benniston
Near-Unity Singlet Fission on a Quantum Dot Initiated by Resonant Energy Transfer
J. Zhang, H. Sakai, K. Suzuki, T. Hasobe, N. V. Tkachenko, I-Ya Chang, K. Hyeon-Deuk, H. Kaji, T. Teranishi, M. Sakamoto
Singlet Exciton Fission and Associated Enthalpy Changes with a Covalently Linked Bichromophore Comprising TIPS-Pentacenes Held in an Open Conformation
J. K. G. Karlsson, A. Atahan, A. Harriman, N. V. Tkachenko, A. D. Ward, F. A. Schaberle, C. Serpa, L. G. Arnaut
Enthalpy-Entropy Compensation Effect for Triplet Pair Dissociation of Intramolecular Singlet Fission in Phenylene Spacer-Bridged Hexacene Dimers
S. Nakamura, H. Sakai, M. Fuki, Y. Kobori, N. V. Tkachenko, T. Hasobe
Autocatalytic photodegradation of [Ru(ii)(2,2′-bipyridine)2DAD]+(DADH = 1,2-dihydroxyanthracene-9,10-dione) by hydrogen peroxide under acidic aqueous conditions
L. Zeng, D. Sirbu, N. V. Tkachenko, A. C. Benniston
Enhanced electronic communication through a conjugated bridge in a porphyrin-fullerene donor-acceptor couple
R. Caballero, J. Calbo, J. Aragó, P. De La Cruz, E. Ortí, N. V. Tkachenko, F. Langa
Publications 2020
Monitoring Charge Carrier Diffusion across a Perovskite Film with Transient Absorption Spectroscopy
H. P. Pasanen, P. Vivo, L. Canil, H. Hempel, T. Unold, A. Abate, and N. V. Tkachenko
Optimization of Photogenerated Charge Carrier Lifetime in ALD Grown TiO<sub>2</sub> for Photonic Applications
R. Khan, H. Ali-Löytty, J. Saari, M. Valden, A. Tukiainen, K. Lahtonen, N. Tkachenko
Endothermic and Exothermic Energy Transfer Made Equally Efficient for Triplet-Triplet Annihilation Upconversion
J. Isokuortti, S. R. Allu, A. Efimov, E. Vuorimaa-Laukkanen, N. Tkachenko, S. Vinogradov, T. Laaksonen, N. Durandin
Ultrafast Photochemistry of [Cr(NCS)<sub>6</sub>]<sub>3</sub> Complex in Dimethylsulfoxide and Dimethylformamide upon Excitation into Ligand-Field Electronic State
T. Khvorost, L. Beliaev, E. Potalueva, A. Laptenkova, A. Selyutin, N. A. Bogachev, M. Y. Skripkin, M. Ryazantsev, N. Tkachenko, A. Mereshchenk
Photostable Orange-Red Fluorescent Unsymmetrical Diketopyrrolopyrrole-BF<sub>2</sub> Hybrids
D. Young, M. Tasior, A. Laurent, L. Dobrzycki, M. K. Cyranski, N. Tkachenko, D. Jacquemin, D. Gryko
Modification of Surface States of Hematite-Based Photoanodes by Sub-Monolayer of TiO<sub>2</sub> for Enhanced Solar Water Splitting
L. Palmolahti, H. Ali-Löytty, R. Khan, J. Saari, N. Tkachenko, M. Valden
On the alignment of ZnO nanowires by Langmuir - Blodgett technique for sensing application
C. Baratto, V. Golovanova, G. Faglia, H. Hakola, T. Niemi, N. Tkachenko, B. Nazarchurk, V. Golovanov
Hydrogen Peroxide Assisted Photorelease of an Anthraquinone-based Ligand from [Ru(2,2’-bipyridine)2(9,10-dioxo-9,10-dihydroanthracen-1-olate)]Cl in Aqueous Solution
L. Zeng, D. Sirbu, P. G. Waddell, N. V. Tkachenko, M. Probert and A. C. Benniston
Near-infrared light control of cell membrane potential via photoinduced charge separation of a donor-(π-extended porphyrin)-accepter linked molecule
Y. Takano, K. Miyake, J. Sobhanan, V. Biju, N. Tkachenko, H. Imahori
B-Site Co-Alloying with Germanium Improves the Efficiency and Stability of All-Inorganic Tin-Based Perovskite Nanocrystal Solar Cells
M. Liu, H. Pasanen, H. Ali-Löytty, A. Hiltunen, K. Lahtonen, S. Qudsia, J. Smått, M. Valden, N. Tkachenko, P. Vivo
Modification of Surface States of Hematite-Based Photoanodes by Submonolayer of TiO2 for Enhanced Solar Water Splitting
L. Palmolahti, H. Ali-Löytty, R. Khan, J. Saari, N. V. Tkachenko, and M. Valden
Effect of light activation on chemical gas sensors based on aligned nanowires
C. Baratto, V. Golovanova, G. Faglia, Thi Thanh Le Dang, H. Hakola, T. Niemi, N. Tkachenko, B. Nazarchurk, V. Golovanov
Room-Temperature Pentacene Fluids: Oligoethylene Glycol Substituent-Controlled Morphologies and Singlet Fission
K. Yoshino, H. Sakai, Y. Shoji, T. Kajitani, H. Anetai, T. Akutagawa, T. Fukushima, N. V. Tkachenko, T. Hasobe
Switching Competition between Electron and Energy Transfers in Porphyrin-Fullerene Dyads
A. A. Strelnikov, A. S. Konev, O. V. Levin, A. F. Khlebnikov, A. Iwasaki, K. Yamanouchi, N. V. Tkachenko
Publications 2019
Refractive index change dominates the transient absorption response of metal halide perovskite thin films in the near infrared
H. P. Pasanen, P. Vivo, L. Canil, A. Abate and N. Tkachenko
Photochemistry of dithiophosphinate Ni(S<sub>2</sub>P(i-Bu)<sub>2</sub>)<sub>2</sub> complex in CCl<sub>4</sub>. Transient species and TD-DFT calculations
A. I. Solovyev, A. V. Mikheylis, V. F. Plyusnin, A. A. Shubin, V. P. Grivin, S. V. Larionov, N. V. Tkachenko, H. Lemmetyinen
Multi-Photon Excitation of CsPbBr<sub>3</sub> Perovskite Quantum Dots: How Many Electrons Can One PQD Donated to Multiple Molecular Acceptors
S. Mandal, N. V. Tkachenko
Charge carrier dynamics in tantalum oxide overlayered and doped hematite photoanodes
T.-P. Ruoko, A. Hiltunen, T. Iivonen, R. Ulkuniemi, K. Lahtonen, H. Ali-Löytty, K. Mizohata, M. Valden, M. Leskela, N. V. Tkachenko
Quantitative Sequential Photoenergy Conversion Process from Singlet Fission to Intermolecular Two-Electron Transfers Utilizing Tetracene Dimer
S. Nakamura, H. Sakai, H. Nagashima, Y. Kobori, N. Tkachenko, H. Taku
Charge Transfer Dynamics in CsPbBr<sub>3</sub> Perovskite Quantum Dots-Anthraquinone/Fullerene (C<sub>60</sub>) Hybrids
S. Mandal, L. George, N. Tkachenko
A Pentacene‐based Nanotube Displaying Enriched Electro/Photochemical Activities
K. Kuroda, K. Yazaki, Y. Tanaka, M. Akita, H. Sakai, T. Hasobe, N. V. Tkachenko, M. Yoshizawa
Photoreactions of Macrocyclic Dyes on (1010) Wurtzite Surface – Interplay Between Conformation and Electronic Effects
V. V. Golovanova, B. V. Nazarchuk, O. V. Postnyi, T. T. Rantala, N. V. Tkachenko, V. V. Golovanov
All-inorganic Tin–Germanium Perovskite Nanocubes: Towards Highly Efficient Lead-free Perovskite Nanocrystals-based Solar Cells
M. Liu, H. Pasanen, H. Ali-Löytty, K. Lahtonen, S. Qudsia, Jan-Henrik Smått, M. Valden, N. Tkachenko, P. Vivo
Controlled Orientations of Neighboring Tetracene Units by Mixed Self-Assembled Monolayers on Gold Nanoclusters for High-Yield and Long-Lived Triplet Excited States through Singlet Fission
T. Saegusa, H. Sakai, H. Nagashima, Y. Kobori, N. V. Tkachenko, T. Hasobe
Critical Sensitizer Quality Attributes for Efficient Triplet−Triplet Annihilation Upconversion with Low Power Density Thresholds
N. Durandin, J. Isokuortti, A. Efimov, E. Vuorimaa-Laukkanen, N. V. Tkachenko, T. Laaksonen
Electronically Coupled Uranium and Iron Oxide Heterojunctions as Efficient Water Oxidation Catalysts
J. Leduc, Y. Gönüllü, T-P Ruoko, T. Fischer, L. Mayrhofer, N. V. Tkachenko, Chung-Li Dong, A. Held, M. Moseler, S. Mathur
Exclusive occurrence of photoinduced energy transfer and switching of its direction by rectangular π-extension of nanographenes
T. Umeyama, T. Hanaoka, H. Yamada, Y. Namura, S. Mizuno, T. Ohara, J. Baek, J. Park, Y. Takano, K. Stranius, N. V. Tkachenko, H. Imahori
Photochemistry of dithiophosphinate Ni(S2P(i-Bu)2)2 complex in CCl4. Transient species and TD-DFT calculations
A. I. Solovyev, A. V. Mikheylis, V. F. Plyusnin, A. A. Shubin, V. P. Grivin, S. V. Larionov, N. V. Tkachenko, H. Lemmetyinen