Review
Chemistry, Multidisciplinary
Xi Chen, Xue Zhang, Xiao Xiao, Zhijia Wang, Jianzhang Zhao
Summary: Charge transfer is crucial in molecular electron donor-acceptor systems for artificial photosynthesis, photocatalysis, photovoltaics, and fundamental photochemistry. We summarized recent developments in the study of charge transfer and discussed its application in thermally activated delayed fluorescence (TADF) emitters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Alexander Aster, Christopher Rumble, Anna-Bea Bornhof, Hsin-Hua Huang, Naomi Sakai, Tomas Solomek, Stefan Matile, Eric Vauthey
Summary: The study focuses on the charge-transfer dynamics of electron donor-acceptor dyads based on NDI chromophores, demonstrating long-lived charge separation in the triplet state can be achieved by controlling the mutual orientation of the donor-acceptor sub-units.
Article
Chemistry, Multidisciplinary
Maria Jesus Cabrera-Afonso, Albert Granados, Gary A. Molander
Summary: This study developed a photoinduced, open-to-air C-H thioetherification method using readily available reagents, which tolerates various functional groups. The intact C(sp(2))-halogen bonds allow late-stage installation of sulfide motif and further modification with traditional C-X bond cleavage methods. Mechanistic investigations support the proposed electron donor-acceptor complex scenario.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Noreen Rehmat, Ivan Kurganskii, Zafar Mahmood, Qing Lin Guan, Jianzhang Zhao, Yong Heng Xing, Gagik G. Gurzadyan, Matvey Fedin
Summary: The study investigated the impact of spin-orbit charge transfer intersystem crossing on PBI-AN donor-acceptor dyads/triad, revealing that molecular conformation, electronic coupling, and dihedral angle between donor and acceptor significantly affect photophysical properties. The dyad PBI-9-AN with orthogonal geometry showed low ground-state coupling and efficient intersystem crossing, while the more coplanar PBI-2-AN exhibited weaker performance in these aspects.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Zimu Wei, Sushil Sharma, Abbey M. Philip, Sanchita Sengupta, Ferdinand C. Grozema
Summary: Donor-bridge-acceptor systems based on BODIPY show potential for bio-imaging and sensing applications, with their photophysical behavior depending on solvent polarity. Factors such as donor-acceptor distance and restricted rotational motion play key roles in tuning the excited state photophysics.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Courtney A. DelPo, Saeed-Uz-Zaman Khan, Kyu Hyung Park, Bryan Kudisch, Barry P. Rand, Gregory D. Scholes
Summary: Enhanced delocalization is beneficial for absorbing molecules in organic solar cells, and polaritons offer exceptional delocalization that can improve the efficiency of bilayer organic photovoltaics by aiding in exciton delivery to the donor-acceptor interface. The decay of polaritons in bilayer cavities shows an additional pathway through charge transfer, indicating that the charge transfer from the polariton is fast enough to outcompete decay to the ground state.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Lloyd Fisher, Ricardo Javier Vazquez, Madeleine Howell, Angelar K. Muthike, Meghan E. Orr, Hanjie Jiang, Betsy Dodgen, Dong Ryun Lee, Jun Yeob Lee, Paul Zimmerman, Theodore Goodson
Summary: This study investigates the excited-state dynamics of organic chromophores with thermally activated delayed fluorescent (TADF) characteristics using multiple time-resolved and nonlinear optical measurements, as well as quantum chemical simulations. The influence of a phenylene linker on the photophysical properties of emitters composed of carbazole-based donors linked to either a phthalonitrile (PN) or diphenyltriazine (Trz) acceptor is of particular interest. The results show that PN-acceptor compounds exhibit a near double-fluorescence quantum yield enhancement in oxygen-free conditions, while Trz-acceptor compounds are more efficient fluorescence emitters and quickly transition from a delocalized to localized state. Only PN-acceptor compounds display a long-lived emissive lifetime component associated with TADF activity. Nanosecond transient absorption spectra and kinetics analysis reveal long-lived excited-state absorption (ESA) bands associated with triplet states for the PN-acceptor compounds. No ESA bands are observed for the Trz-acceptor compounds, despite a quantum yield enhancement after oxygen purging. Quantum chemical calculations indicate that the inclusion of the phenylene linker prevents sufficient energy separation and suppresses TADF activity, while directly linking multiple donors to the acceptor would aid in achieving TADF activity.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Taeyeon Kim, Yuanning Feng, James P. O'Connor, J. Fraser Stoddart, Ryan M. Young, Michael R. Wasielewski
Summary: Designing and controlling charge transfer pathways in organic semiconductors are crucial for solar energy applications. This study investigates the photoinduced charge transfer and relaxation dynamics in host-guest complexes, and demonstrates that the charge transfer pathway can be controlled by subtle chemical modifications of the acceptor host.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Thomas P. P. Fay, David T. T. Limmer
Summary: In this paper, a physically motivated framework is proposed to describe spin-selective recombination processes in chiral systems. Spin-selective reaction operators for recombination reactions of donor-bridge-acceptor molecules are derived based on chirality and spin-orbit coupling. It is found that spin polarization selectivity only arises in hopping-mediated electron transfer. The framework presented here can be extended to describe spin-selective recombination processes in more complex systems.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Laura A. Voelker, Konstantin Herb, Erika Janitz, Christian L. Degen, John M. Abendroth
Summary: In this study, a quantum sensing scheme is introduced to directly measure the hypothesized spin polarization in radical pairs using shallow nitrogen-vacancy (NV) centers in diamond. This method provides fresh insights into spin selectivity in electron transfer reactions.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
M. D. Shahjahan, Takuya Okamoto, Lata Chouhan, Bhagyashree Mahesha Sachith, Narayan Pradhan, Hiroaki Misawa, Vasudevanpillai Biju
Summary: In this study, we demonstrate the successful fabrication of multiple heterojunction structures in perovskite crystals using laser-assisted band gap engineering. This allows for efficient transport and trapping of photogenerated charge carriers. The developed donor-acceptor halide perovskites have potential applications in photovoltaic, photonic, and electronic devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Svenja Neumann, Oliver S. Wenger, Christoph Kerzig
Summary: The study investigates a molecular dyad capable of producing reduced metal complexes through an indirect pathway, demonstrating the potential of novel photocatalysts with unprecedented quantum yields. By optimizing this approach, the generation of reduced metal complexes via this pathway could outperform the conventional direct metal complex photoreduction. This research provides valuable evidence for the indirect mechanism of reduced metal complex generation and its advantages over direct pathways.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Sairam Dnyaneshwar Veer, Vivek Chandrakant Wakchaure, Kiran Asokan, Ruchi Dixit, Tanmay Goswami, Ramchandra Saha, Rajesh Gonnade, Hirendra N. Ghosh, Sukumaran Santhosh Babu
Summary: Aesthetic designs from nature inspire scientific models and enable new knowledge. The advantageous positioning of structural units in multicomponent macrocycles allows for efficient communication. However, the construction of a functionalizable macrocycle for ultrafast charge separation and stabilization has not been attempted. In this study, a new functionalizable macrocycle was synthesized and its charge separation and stabilization capabilities were observed. The design of our macrocycle, with a supportive spatial arrangement of donor and acceptor units, will inspire the development of more complex synthetic systems with exciting electron-transfer and charge-separation features.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Yi-Ming Di, Meng-Hua Li, Ming-Hua You, Shu-Quan Zhang, Mei-Jin Lin
Summary: Donor-acceptor hybrid crystals are a new type of crystalline material with the ability to display room temperature phosphorescence. The incorporation of photosensitive core-substituted NDIs can greatly affect the light-sensitive properties of the hybrids. The heavy-atom effect contributes to the remarkable room temperature phosphorescence observed in these hybrid crystals.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Shubhankar Barman, Aritri Pal, Anurag Mukherjee, Swadesh Paul, Anuja Datta, Suhrit Ghosh
Summary: This review provides an overview of the research status and future development of organic ferroelectric materials. Among them, donor-acceptor charge transfer complexes are considered promising for ferroelectricity. The review lists different organic systems and molecular assembly forms, and discusses their performances in terms of ferroelectricity and piezoelectricity.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Oliver S. Wenger
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Inorganic & Nuclear
Svenja Neumann, Oliver S. Wenger
INORGANIC CHEMISTRY
(2019)
Article
Chemistry, Physical
Sabine Malzkuhn, Xingwei Guo, Daniel Haussinger, Oliver S. Wenger
JOURNAL OF PHYSICAL CHEMISTRY A
(2019)
Article
Chemistry, Inorganic & Nuclear
Michael Skaisgirski, Christopher B. Larsen, Christoph Kerzig, Oliver S. Wenger
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2019)
Review
Chemistry, Organic
Xingwei Guo, Yasunori Okamoto, Mirjam R. Schreier, Thomas R. Ward, Oliver S. Wenger
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2020)
Review
Chemistry, Multidisciplinary
Felix Glaser, Christoph Kerzig, Oliver S. Wenger
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Alessandro Castrogiovanni, Patrick Herr, Christopher B. Larsen, Xingwei Guo, Christof Sparr, Oliver S. Wenger
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Multidisciplinary
Thomas Brandl, Christoph Kerzig, Loic Le Pleux, Alessandro Prescimone, Oliver S. Wenger, Marcel Mayor
CHEMISTRY-A EUROPEAN JOURNAL
(2020)
Article
Chemistry, Inorganic & Nuclear
Shao-An Hua, Mauricio Cattaneo, Manuel Oelschlegel, Moritz Heindl, Lucius Schmid, Sebastian Dechert, Oliver S. Wenger, Inke Siewert, Leticia Gonzalez, Franc Meyer
INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Physical
Christian Fischer, Christoph Kerzig, Bouthayna Zilate, Oliver S. Wenger, Christof Sparr
News Item
Chemistry, Multidisciplinary
Oliver S. Wenger
Article
Chemistry, Inorganic & Nuclear
Patrick Herr, Oliver S. Wenger
Article
Chemistry, Multidisciplinary
Svenja Neumann, Christoph Kerzig, Oliver S. Wenger
Review
Chemistry, Inorganic & Nuclear
Andrea Pannwitz, Oliver S. Wenger
DALTON TRANSACTIONS
(2019)
Article
Chemistry, Multidisciplinary
Andrea Pannwitz, Oliver S. Wenger
CHEMICAL COMMUNICATIONS
(2019)