In 2020,Advanced Functional Materials included an article by Feng, Jiale; Yang, Lupeng; Romanov, Alexander S.; Ratanapreechachai, Jirawit; Reponen, Antti-Pekka M.; Jones, Saul T. E.; Linnolahti, Mikko; Hele, Timothy J. H.; Koehler, Anna; Baessler, Heinz; Bochmann, Manfred; Credgington, Dan. Quality Control of N-(2-Chloro-4-(trifluoromethyl)phenyl)acetamide. The article was titled 《Environmental Control of Triplet Emission in Donor-Bridge-Acceptor Organometallics》. The information in the text is summarized as follows:
Carbene-metal-amides (CMAs) are a promising family of donor-bridge-acceptor mol. charge-transfer (CT) emitters for organic light-emitting diodes. A universal approach is demonstrated to tune the energy of their CT emission. A blueshift of ≤210 meV is achievable in solid state via dilution in a polar host matrix. The origin of this shift has 2 components: constraint of thermally-activated triplet diffusion, and electrostatic interactions between guest and polar host. This allows the emission of mid-green CMA archetypes to be tuned to sky blue without chem. modifications. Monte-Carlo simulations based on a Marcus-type transfer integral reproduce the concentration- and temperature-dependent triplet diffusion process, revealing a substantial shift in the ensemble d. of states in polar hosts. In Au-bridged CMAs, this shift does not lead to a significant change in luminescence lifetime, thermal activation energy, reorganization energy, or intersystem crossing rate. These discoveries offer new insight into coupling between the singlet and triplet manifolds in CMA materials, revealing a dominant interaction between states of CT character. The same approach is employed using materials which were chem. modified to alter the energy of their CT state directly, shifting the emission of sky-blue chromophores into the practical blue range. In the experiment, the researchers used N-(2-Chloro-4-(trifluoromethyl)phenyl)acetamide(cas: 247170-19-0Quality Control of N-(2-Chloro-4-(trifluoromethyl)phenyl)acetamide)
N-(2-Chloro-4-(trifluoromethyl)phenyl)acetamide(cas: 247170-19-0) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.Quality Control of N-(2-Chloro-4-(trifluoromethyl)phenyl)acetamide
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics