Web15 Feb 2024 · Ultrafast spectroscopy would be an ideal characterization technique for many scientific and industrial applications if only it weren’t so slow. To accurately characterize a … Web4 Jul 2009 · How a molecular understanding of the light-harvesting and photoprotective functions of carotenoids in photosynthesis is accomplished through the application of ultrafast transient absorption spectroscopy is discussed. The photophysical and photochemical reactions, after light absorption by a photosynthetic pigment–protein …
Ultrafast charge transfer dynamics in 2D covalent organic ... - Nature
Web13 Apr 2024 · The photo-physical properties of dicyanoanthracene (DCA) molecules adsorbed on the external surface of ZSM-5 zeolite, forming DCA@ZSM-5 composites, … Web15 Feb 2024 · Ultrafast spectroscopy is an important tool for studying photoinduced dynamical processes in atoms, molecules, and nanostructures. Typically, the time to … chicago landscape wallpaper
Ultrafast transient infrared spectroscopy for probing trapping …
Laser pulses as short as 5 fs are now available for transient absorption spectroscopy (see, e.g., Cerullo et al. (2002); and Nishimura et al. (2004)). A short pulse duration Δt implies a large spectral bandwidth Δv according to relation ΔtΔv = 0.44 for Gaussian-shaped pulses. This relation is known as the time–bandwidth … See more The process of energy transfer in a photosynthetic membrane typically takes place on a time scale from less than 100 fs to hundreds of ps (Sundström et al. 1999; Van Amerongen and Van Grondelle 2001; Van Grondelle … See more Generally speaking, two types of ultrafast transient absorption spectroscopy setups are widely used today for photosynthesis research, distinguished by the repetition rate and pulse … See more A transient absorption experiment proceeds as follows: the time delay between excitation and probe beams is fixed. Before reaching the sample, the excitation beam (that … See more In order to vary the time delay between the excitation and probe pulses, the excitation pulse generated by the OPA is sent through an optical delay line, which consists of a retroreflector mounted on a high-precision … See more Web13 Apr 2024 · The photo-physical properties of dicyanoanthracene (DCA) molecules adsorbed on the external surface of ZSM-5 zeolite, forming DCA@ZSM-5 composites, have been investigated by picosecond transient emission, femtosecond transient absorption infrared vibrational spectroscopy, steady-state UV–vis, and quantum chemistry … WebUltrafast transient absorption microscopy enables measurement of excited state dynamics with sub-micron spatial resolution, which has been used to investigate the influence of film morphology on local excited state … chicagoland sia agent login