Catherine Johnson
Wellesley College
10 Papers
3 Citations
Catherine Johnson is an academic researcher from Wellesley College. The author has contributed to research in topics: Excited state & Chemistry. The author has an hindex of 2, co-authored 3 publications.
Chat about Author
Papers
Photoredox catalysis via consecutive 2LMCT- and 3MLCT-excitation of an Fe(iii/ii)–N-heterocyclic carbene complex
Aleksandra Ilic,Jesper Schwarz,Catherine Johnson,Lisa H M de Groot,Simon Kaufhold,Reiner Lomoth,Kenneth Wärnmark +6 more
TL;DR: In this paper , the authors employed Fe(iii)(btz)3]3+ (btz = (3,3′-dimethyl-1,1′-bis(p-tolyl)-4,4′)-bis(1,2,3-triazol-5-ylidene))) in the addition of alkyl halides to alkenes and alkynes via visible light-mediated atom transfer radical addition (ATRA).
High turnover photocatalytic hydrogen formation with an Fe(III) N-heterocyclic carbene photosensitiser.
TL;DR: In this paper , the first high turnover photocatalytic hydrogen formation reaction based on an earth-abundant FeIII-NHC photosensitiser was reported, where the reaction occurs via reductive quenching of the 2LMCT excited state that can be directly excited with green light.
24
Photophysical Integrity of the Iron(III) Scorpionate Framework in Iron(III)–NHC Complexes with Long-Lived 2LMCT Excited States
O. Prakash,Linnea Lindh,Nidhi Kaul,Nils W. Rosemann,Iria Bolaño Losada,Catherine Johnson,Pavel Chábera,Aleksandra Ilic,Jesper Schwarz,Arvind Kumar Gupta,Jens Uhlig,Tore Ericsson,Lennart Häggström,Ping S. Huang,Jesper Bendix,Daniel Strand,Arkady Yartsev,Reiner Lomoth,Petter Persson,Kenneth Wärnmark +19 more
TL;DR: Fe(III) hexa-NHC complexes with N-heterocyclic carbene (NHC) ligands belong to the rare examples of Earth-abundant transition metal complexes with long-lived luminescent charge transfer excited states that enable applications as photosensitizers for charge separation reactions as discussed by the authors .
18
Ferrous and ferric complexes with cyclometalating N-heterocyclic carbene ligands: a case of dual emission revisited
Catherine Johnson,Jesper Schwarz,Mawuli Deegbey,O. Prakash,Kumkum Sharma,Ping‐Hsin Huang,Tore Ericsson,Lennart Häggström,Jesper Bendix,Arvind Kumar Gupta,Elena Jakubikova,Kenneth Wärnmark,Reiner Lomoth +12 more
TL;DR: Iron(III) complex exhibits dual emission via 2 LMCT and photoproduct of non-emitting Fe(II) complex, while its 2 MLCT state is non-luminescent, revealing a complex photoluminescence mechanism in ferrous and ferric complexes with cyclometalating N-heterocyclic carbene ligands.
9
High-Efficiency Photoinduced Charge Separation in Fe(III)carbene Thin Films
Minli Zhang,Catherine Johnson,Aleksandra Ilic,Jesper Schwarz,Malin B. Johansson,Reiner Lomoth +5 more
TL;DR: High-efficiency photoinduced charge separation in Fe(III)carbene thin films occurs with ultrafast electron transfer and high collection efficiency.
4