The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. COA of Formula: C4H7BrO2, 2623-87-2, Name is 4-Bromobutanoic acid, SMILES is O=C(O)CCCBr, in an article , author is Liu, Xiaoyu, once mentioned of 2623-87-2.
Critical Roles of High- and Low-Frequency Optical Phonons in Photodynamics of Zero-Dimensional Perovskite-like (C6H22N4C13)SnCl3 Crystals
The zero-dimensional perovskites composed of isolated polyhedrons have unique and distinct physical properties compared with three-dimensional perovskites composed of interconnected polyhedrons. Here, we study the photodynamics of the zero-dimensional perovskite-like (C6H22N4C13)SnCl3 single crystals composed of isolated [SnCl3](-) tetrahedrons. They exhibit red luminescence with huge Stokes shift (2.49 eV), large spectral broadening (416 meV), and long lifetime (6.9 mu s). The experiments in conjunction with the ab initio calculations reveal the special roles of high- and low-frequency phonons in the photodynamics of the (C6H22N4C13)SnCl3 crystals. The resonance between the organic-cation-related high-frequency optical phonons and the singlet-to-triplet state transition induces strong intersystem crossing and resultant spin forbidden luminescence. The strong electron-tetrahedron-related low-frequency optical-phonon coupling revealed by the low-temperature spectral characterization causes large spectral broadening. The strong lattice relaxation owing to localization of the electronic orbitals along with intersystem crossing accounts for the large Stokes shift.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 2623-87-2, you can contact me at any time and look forward to more communication. COA of Formula: C4H7BrO2.