Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, Quality Control of 5-Methylfuran-2(5H)-one, 591-11-7, Name is 5-Methylfuran-2(5H)-one, SMILES is O=C1OC(C)C=C1, belongs to benzofurans compound. In a document, author is Yang, Jing, introduce the new discover.
Tuning the optoelectronic properties of vinylene linked perylenediimide dimer by ring annulation at the inside or outside bay positions for fullerene-free organic solar cells
Among various perylenediimide (PDI)-based small molecular non-fullerene acceptors (NFAs), PDI dimer can effectively avoid the excessive aggregation of single PDI and improve the photovoltaic performance. However, the twist of perylene core in PDI dimer will destroy the effective conjugation. Thus, ring annulation of PDI dimer is a feasible method to balance the film quality and electron transport, but the systematic study has attracted few attentions. Herein, we choose a simple vinylene linked PDI dimer, V-PDI2, and then conduct further studies on the structure-property-performance relationship of four kinds of derived fused-PDI dimers, namely V-TDI2, V-FDI2, V-PDIS2 and V-PDISe2 respectively. The former two are incorporated thianaphthene and benzofuran at the inside bay positions, and the latter two are fused thiophene and selenophene at the outside bay positions, respectively. Theoretical calculations reveal the inside- and outside-fused structures largely affect the skeleton configuration, the former two tend to be planar structure and the latter two maintain the distorted backbone. The photovoltaic characterizations show that the inside-fused PDI dimers offer high open circuit voltage (V-OC), while the outside-fused PDI dimers afford large short-circuit current density (J(SC)). This variation tendency results from the reasonably tunable energy levels, light absorption, molecular crystallinity and film morphology. As a result, PBDB-T:V-PDISe2 device exhibits the highest power conversion efficiency (PCE) of 6.51%, and PBDB-T:V-FDI2 device realizes the highest V-OC of 1.00 V. This contribution indicates that annulation of PDI dimers in outside or inside bay regions is a feasible method to modulate the properties of PDI-based non-fullerene acceptors. (C) 2019 Sience Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 591-11-7 is helpful to your research. Quality Control of 5-Methylfuran-2(5H)-one.
Reference:
Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem