Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， name: 4,7-Dimethoxy-1,10-phenanthroline, Which mentioned a new discovery about 92149-07-0
In this work, the compounds fac-[ReL(CO)3(NN)]0/+1, NN = 1,10-phenanthroline, phen, 4,7-dimethyl-1,10-phenanthroline, Me2phen, or 4,7-dimethoxy-1,10-phenanthroline, (MeO)2phen, and L = Cl? or triphenylphosphine, PPh3, were synthetized and characterized by 1H NMR, UV?vis and FTIR spectroscopies and their photophysical properties were investigated by steady-state and time-resolved emission spectroscopies. All complexes displayed strong absorption in the high energy UV-region assigned to intraligand transitions, ILNN, and the lower energy band was ascribed to a metal-to-ligand charge transfer, MLCTRe?NN. The two electron donor groups attached to phen ligand shifted the emission maxima of the complexes to higher energy as the substituent becomes more electron donor, consequently the contribution of the 3ILNN on the 3MLCT emission becomes more evident. This effect is enhanced by coordinating the electron-withdrawing PPh3 ligand on Re(I) complexes (lambdamax = 515 nm, ? = 13%, tau = 2.52 mus for phen; lambdamax = 512 nm, ? = 8.2%, tau = 2.00 mus for Me2phen; lambdamax = 478 and 506 nm, ? = 1.1%, tau = 1.12 mus for (MeO)2phen). This interference is supported by the small shift of the emission maxima and two lifetimes in the mus domain observed for substituted-phen complexes in PMMA films. The photophysics of Re(I) compounds reported herein provides new insights into the understanding of electron-donor groups on the phen ligand that are relevant to practical and fundamental development of photoinduced molecular devices.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, name: 4,7-Dimethoxy-1,10-phenanthroline, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 92149-07-0
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI