Spin-vibronic mechanism for intersystem crossing

TJ Penfold, E Gindensperger, C Daniel… - Chemical …, 2018 - ACS Publications
Intersystem crossing (ISC), formally forbidden within nonrelativistic quantum theory, is the
mechanism by which a molecule changes its spin state. It plays an important role in the …

Cu (I) complexes–Thermally activated delayed fluorescence. Photophysical approach and material design

R Czerwieniec, MJ Leitl, HHH Homeier… - Coordination Chemistry …, 2016 - Elsevier
Cu (I) complexes often show transitions of distinct metal-to-ligand charge transfer (MLCT)
character. This can lead to small energy separations between the lowest singlet S 1 and …

Red light-based dual photoredox strategy resembling the Z-scheme of natural photosynthesis

F Glaser, OS Wenger - JACS Au, 2022 - ACS Publications
Photoredox catalysis typically relies on the use of single chromophores, whereas strategies,
in which two different light absorbers are combined, are rare. In photosystems I and II of …

Direct observation of triplet energy transfer from semiconductor nanocrystals

C Mongin, S Garakyaraghi, N Razgoniaeva, M Zamkov… - Science, 2016 - science.org
Triplet excitons are pervasive in both organic and inorganic semiconductors but generally
remain confined to the material in which they originate. We demonstrated by transient …

Improved transition metal photosensitizers to drive advances in photocatalysis

D Kim, VQ Dang, TS Teets - Chemical Science, 2024 - pubs.rsc.org
To function effectively in a photocatalytic application, a photosensitizer's light absorption,
excited-state lifetime, and redox potentials, both in the ground state and excited state, are …

TADF Material Design: Photophysical Background and Case Studies Focusing on Cu(I) and Ag(I) Complexesa

H Yersin, R Czerwieniec, MZ Shafikov… - … : Materials Based on …, 2018 - Wiley Online Library
Designing of thermally activated delayed fluorescence (TADF) compounds with short TADF
decay time and high emission quantum yield is a challenge. This chapter introduces …

Highly Efficient and Robust Photocatalytic Systems for CO2 Reduction Consisting of a Cu(I) Photosensitizer and Mn(I) Catalysts

H Takeda, H Kamiyama, K Okamoto… - Journal of the …, 2018 - ACS Publications
The development of highly efficient, selective, and durable photocatalytic CO2 reduction
systems that only use earth-abundant elements is key for both solving global warming and …

Low power threshold photochemical upconversion using a zirconium (IV) LMCT photosensitizer

M Yang, S Sheykhi, Y Zhang, C Milsmann… - Chemical …, 2021 - pubs.rsc.org
The current investigation demonstrates highly efficient photochemical upconversion (UC)
where a long-lived Zr (IV) ligand-to-metal charge transfer (LMCT) complex serves as a triplet …

Employing long-range inductive effects to modulate metal-to-ligand charge transfer photoluminescence in homoleptic Cu (I) complexes

MC Rosko, EM Espinoza, S Arteta, S Kromer… - Inorganic …, 2023 - ACS Publications
Four Cu (I) bis (phenanthroline) photosensitizers formulated from a new ligand structural
motif (Cu1–Cu4) coded according to their 2, 9-substituents were synthesized, structurally …

Enhancement of the Luminescent Efficiency in Carbene-Au(I)-Aryl Complexes by the Restriction of Renner–Teller Distortion and Bond Rotation

T Li, DS Muthiah Ravinson, R Haiges… - Journal of the …, 2020 - ACS Publications
A series of (carbene) Au (I)(aryl) complexes are reported. The nature of the lowest excited
state in these complexes changes character from metal-to-ligand charge transfer (MLCT) to …