Related Experiment Video
Updated: Mar 29, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Femtosecond to Microsecond Dynamics of Soret-Band Excited Corroles
Abstract:
We present a comprehensive photophysical investigation on a series of three corroles (TTC, P-TTC, Ge-TTC dissolved in toluene), employing femtosecond and nanosecond transient absorption spectroscopy (TAS) measurements. Systematic analyses of the TAS data determined the rates and corresponding time constants of photophysical processes: internal conversion (τIC) in the 898-525 fs range, vibrational relaxation (τ_VR) in the 7.44-13.6 ps range, intersystem crossing (τISC ) in the 033-1.09 ns range and triplet lifetime (τ_triplet) in the 0.8-3.5μs range. The estimated triplet quantum yields (ΦTriplet) were in the 0.42 - 0.61 range. Comparatively, GeTTC displayed faster τIC and higher(ΦTriplet). Additionally, the time-dependent density functional theory (DFT) calculations were performed for the three molecules. The HOMO/LUMO energy levels and the oscillator strengths of various transitions were determined and presented.
More Related Videos
14:12Dual-Color Fluorescence Cross-Correlation Spectroscopy to Study Protein-Protein Interaction and Protein Dynamics in Live Cells
Published on: December 11, 2021
10:03Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
Published on: June 27, 2014
Related Concept Videos
UV–Vis Spectroscopy: Molecular Electronic Transitions
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
According to Hooke's law, the vibrational frequency is directly proportional to...
IR Spectroscopy: Molecular Vibration Overview
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Molecular Spectroscopy: Absorption and Emission
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...