30711-41-2Relevant articles and documents
Mono-ketone modified C60s for acceptor materials in organic photovoltaic cells
Lee, Hak Sung,Yoon, Sung Cheol,Lim, Jongsun,Lee, Myongsoo,Lee, Changjin
, p. 293 - 302 (2008)
We designed and synthesized methanofullerene derivatives with several types of thiophenyl mono-ketone for application in organic photovoltaic cells (OPVCs) as new accepter materials. The various mono-ketones having thiophene rings were substituted onto fullerene through application of Hirch-Bingel reaction under mild condition to compete with donor materials especially P3HT [Poly(3-hexylthiophene)] for nano-networking bulk-heterojunction structure where efficient light-induced charge separation is enable by a large-area donor-acceptor interface. The newly synthesized methanofullerene derivatives were characterized through 1H-NMR and FAB Mass spectroscopy. The compounds were also applied in OPV cell devices with P3HT as a donor material and measured electrochemical the property and power conversion efficiency.
Iron(III)-Catalyzed Hydration of Unactivated Internal Alkynes in Weak Acidic Medium, under Lewis Acid-Assisted Br?nsted Acid Catalysis
Antenucci, Achille,Flamini, Piergiorgio,Fornaiolo, Marco Valerio,Di Silvio, Sergio,Mazzetti, Sara,Mencarelli, Paolo,Salvio, Riccardo,Bassetti, Mauro
, p. 4517 - 4526 (2019/08/26)
Alkylarylalkynes are converted with full regioselectivity into the corresponding arylketones by formal hydration of the triple bond under weak acidic conditions, at times and temperatures (≤95 °C) comparable to those used for terminal alkynes. The process catalyzed by Fe2(SO4)3nH2O in glacial acetic acid exhibits good functional group compatibility, including that with bulky triple bond substituents, and can be extended to the one-pot transformation of aryltrimethylsilylacetylenes into acetyl derivatives via a desilylation-hydration sequence. The overall reactivity pattern along with proton affinity data indicate that the triple bond is activated by proton transfer rather than by π-interaction with the metal ion. This mechanistic feature, at variance with that of noble metal catalysts, accounts for the total regioselectivity and the insensitivity to steric hindrance exhibited by the Fe2(SO4)3nH2O/AcOH catalytic system. (Figure presented.).
1,8-Substituted Pyrene Derivatives for High-Performance Organic Field-Effect Transistors
Gong, Xiaojie,Zheng, Chaoyue,Feng, Xingcui,Huan, Yihong,Li, Jiewei,Yi, Mingdong,Fu, Zhenqian,Huang, Wei,Gao, Deqing
supporting information, p. 3920 - 3927 (2018/11/23)
There have been many reports on the application of pyrene derivatives as organic semiconductors, but 1,8-subsituted pyrene semiconductors are less well-developed. Two p-type 1,8-substituted pyrene derivatives were synthesized that were composed of a pyrene core, thiophene or bithiophene arms, and end-capped octyl chains. These structures were not completely symmetrical and the dihedral angles between the pyrene core and the adjacent thiophene units had a difference of approximately two degrees. The field-effect performance of these materials was tested on a variety of dielectric surfaces. The performance of both materials with a spin-coated polystyrene layer on SiO2 (PS-treated SiO2) was better than that with an octadecyltrichlorosilane self-assembled monolayer on SiO2 (OTS-treated SiO2), which was mainly attributed to the presence of large grains on the low-leakage and high-capacitance PS films. The thiophene-contained compound presented a hole mobility of up to 0.18 cm2 V?1 s?1 on PS-treated SiO2, which was 45 times that of the bithiophene-contained compound, owing to less steric hindrance, high crystallinity, and large grain size.
