Zhang, Maojie published the artcileSynergistic effect of fluorination on molecular energy level modulation in highly efficient photovoltaic polymers, Safety of 4,8-Bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene, the publication is Advanced Materials (Weinheim, Germany) (2014), 26(7), 1118-1123, database is CAplus and MEDLINE.
Four newly designed donor-acceptor polymers were prepared and characterized. The results clearly, show that fluorination on the donor and the acceptor moieties has little influence on the optical properties, but a synergistic effect on lowering their mol. energy levels. Accordingly, the photovoltaic measurements show that the PSC (polymer solar cell) device based on the tri- P2fluorinated polymer, PBT-3F, shows an enhanced PCE of 8.6%, which is among the highest for PSCs with a single heterojuncνtion structure. Therefore, introducing fluorine atoms onto the appropriate positions of the donor units in D-A polymers will be a promising method to effectively tune their mol. energy levels of for applications in PSCs.
Advanced Materials (Weinheim, Germany) published new progress about 1514905-24-8. 1514905-24-8 belongs to benzothiophene, auxiliary class Organic Photo-Voltaic Materials, OPV,BDT Donors, name is 4,8-Bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene, and the molecular formula is C12H14BNO2, Safety of 4,8-Bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene.
Referemce:
https://en.wikipedia.org/wiki/Benzothiophene,
Benzothiophene | C8H6S – PubChem