The effect of pressure on Raman scattering cross section of canthaxanthin

Visible-light excitable, highly transparent and luminescent films with an ultrahigh loading of a europium(III) complex

“…The highly possible reason for the red shift of excitation spectra is molecular aggregation of [Eu(TTA) 4 ] − in PMMA, in which the molecular stacking of [Eu(TTA) 4 ] − tends to be coplanar, leading to a higher degree of exciton delocalization. 29–31 This hypothesis can be further demonstrated by comparing the excitation spectra of complex 3 and the luminescent film with a complex 1 loading content of 80 wt%, in which their excitation profiles are similar. According to the analysis of the steric effects of counterions, the observed bathochromic shift in complex 3 with respect to complex 1 is due to the aggregation of [Eu(TTA) 4 ] − .…”

External Field Effect on Electronic and Vibrational Properties of Carotenoids

“…Photoinduced and time-resolved absorption spectroscopy reveal that the infrared absorption bands may correspond to the recombination of the soliton-like excitations in β-Car single crystals [13][14][15][16]. Spectroscopic properties and dynamics of the excited singlet states have been investigated in different liquids or polymers as a function of refractive index [17], static permittivity [18], temperature [19], pressure [20], and external electric field [21][22][23]. Although the solvated carotenoids have been extensively studied, the temperature dependence of Raman-active modes of carotenoids remained unknown until the work by reference [24].…”