A5069019840- Quantum Dots Synthesis And Properties
- Photosynthetic Processes and Mechanisms
- Spectroscopy and Quantum Chemical Studies
- Photoreceptor and optogenetics research
- Radical Photochemical Reactions
- Semiconductor Quantum Structures and Devices
- Photochemistry and Electron Transfer Studies
- Acoustic Wave Resonator Technologies
- Porphyrin and Phthalocyanine Chemistry
- Phenothiazines and Benzothiazines Synthesis and Activities
- Molecular Junctions and Nanostructures
- Photochromic and Fluorescence Chemistry
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Photopolymerization techniques and applications
- Perovskite Materials and Applications
- Free Radicals and Antioxidants
University of Bristol
2019-2022
University of Padua
2018
Institute of Ionized Gas
2018
The photochemical dynamics of three classes organic photoredox catalysts employed in organocatalyzed atom-transfer radical polymerization (O-ATRP) are studied using time-resolved optical transient absorption and fluorescence spectroscopy. nine selected for study examples N-aryl core-substituted dihydrophenazine, phenoxazine phenothiazine compounds with varying propensities control outcomes. Excited singlet-state lifetimes extracted from the spectroscopic measurements reported...
Although the harnessing of multiple and hot excitons is a prerequisite for many groundbreaking applications semiconductor quantum dots (QDs), characterization their dynamics through conventional spectroscopic techniques cumbersome. Here, we show how careful analysis 2DES maps acquired in different configurations (BOXCARS pump-probe geometry) allows tracking visualization intraband Auger relaxation mechanisms, driving carrier cooling, interband bi- tri-exciton recombination dynamics. The...
Reaction centers (RCs) are the pivotal component of natural photosystems, converting solar energy into potential difference between separated electrons and holes that is used to power much biology. RCs from anoxygenic purple photosynthetic bacteria such as Rhodobacter sphaeroides only weakly absorb visible region spectrum, which limits their overall light-harvesting capacity. For in vitro applications biohybrid photodevices, this deficiency can be addressed by effectively coupling with...
The interplay of two excited electronic states dictates the ultrafast dynamics and functionality thiophene-diketopyrrolopyrrole derivatives.
The ultrafast dynamics of a bimolecular excited-state proton transfer (ESPT) reaction between the photoacid 7-hydroxy-4-(trifluoromethyl)-1-coumarin (CouOH) and 1-methylimidazole (MI) base in aprotic chloroform- d1 solution were investigated using transient infrared (TRIR) absorption (TA) spectroscopies. lifetime is relatively short (52 ps), which at millimolar concentrations used our study precludes any diffusion-controlled ESPT reactions. This allows prompt hydrogen-bonded CouOH MI...
Abstract Reaction centers (RCs) are the pivotal component of natural photosystems, converting solar energy into potential difference between separated electrons and holes that is used to power much biology. RCs from anoxygenic purple photosynthetic bacteria such as Rhodobacter sphaeroides only weakly absorb visible region spectrum which limits their overall light-harvesting capacity. For in vitro applications bio-hybrid photodevices this deficiency can be addressed by effectively coupling...