COA of Formula: C12H8Br2. Recently I am researching about PHOTON UP-CONVERSION; LIGHT-EMITTING-DIODES; LONG-RANGE ELECTRON; BRIDGE ENERGETICS; TRANSFER DYNAMICS; TRANSFER RATES; NANOCRYSTALS; CHARGE; WIRE; TRANSPORT, Saw an article supported by the Air Force Office of Scientific Research (AFOSR)United States Department of DefenseAir Force Office of Scientific Research (AFOSR) [FA9550-19-1-0092]; DOEUnited States Department of Energy (DOE) [DE-SC0018969]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry ProgramUnited States Department of Energy (DOE) [DE-FG02-12ER16347, DE-SC0008798]; Sixten Gemzeus Stiftelse. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Huang, ZY; Xu, ZH; Huang, TT; Gray, V; Moth-Poulsen, K; Lian, TQ; Tang, ML. The CAS is 92-86-4. Through research, I have a further understanding and discovery of 4,4′-Dibromobiphenyl
Efficient energy transfer is particularly important for multiexcitonic processes like singlet fission and photon upconversion. Observation of the transition from short-range tunneling to long-range hopping during triplet exciton transfer from CdSe nanocrystals to anthracene is reported here. This is firmly supported by steady-state photon upconversion measurements, a direct proxy for the efficiency of triplet energy transfer (TET), as well as transient absorption measurements. When phenylene bridges are initially inserted between a CdSe nanocrystal donor and anthracene acceptor, the rate of TET decreases exponentially, commensurate with a decrease in the photon upconversion quantum efficiency from 11.6% to 4.51% to 0.284%, as expected from a tunneling mechanism. However, as the rigid bridge is increased in length to 4 and 5 phenylene units, photon upconversion quantum efficiencies increase again to 0.468% and 0.413%, 1.5 1.6 fold higher than that with 3 phenylene units (using the convention where the maximum upconversion quantum efficiency is 100%). This suggests a transition from exciton tunneling to hopping, resulting in relatively efficient and distance-independent TET beyond the traditional 1 nm Dexter distance. Transient absorption spectroscopy is used to confirm triplet energy transfer from CdSe to transmitter, and the formation of a bridge triplet state as an intermediate for the hopping mechanism. This first observation of the tunneling-to-hopping transition for long-range triplet energy transfer between nanocrystal light absorbers and molecular acceptors suggests that these hybrid materials should further be explored in the context of artificial photosynthesis.
COA of Formula: C12H8Br2. About 4,4′-Dibromobiphenyl, If you have any questions, you can contact Huang, ZY; Xu, ZH; Huang, TT; Gray, V; Moth-Poulsen, K; Lian, TQ; Tang, ML or concate me.
Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem