New donor–linker–acceptor pattern organic dye containing a dithienosilole unit as a π-conjugated system, a carbazole moiety as an electron donor, and a cyanoacrylic acid unit as an electron acceptor was synthesized for application in dye-sensitizedsolarcell (DSSC). Its photophysical and electrochemical properties were investigated, the dithienosilole unit could dramatically lower the lowest unoccupied
under mild conditions (110 °C) in a short period of time (15 min to 2h) to give N‐(hetero)arylcarbazoles in high yields. The reactions of bromochlorobenzenes proceeded in favour of the bromo group to afford N‐(chlorophenyl)carbazoles in a highly selective manner. Functional materials for use in organiclight‐emitting diodes, such as mCP, 26mcPy, CBP and TCB, were also obtained in high yields within 15 min
Cyclometalated platinum(II) complexes with various donor-acceptor moieties have been synthesized and structurally characterized. The photophysical behaviors of the complexes are highly sensitive to the modulation of the donor and acceptor moieties. The donor-acceptor couple is also crucial to stabilize the field-induced charge-transfer state in the resistive memories based on this class of complexes, leading
已经合成了具有各种供体-受体部分的环金属化铂 (II) 配合物并对其进行了结构表征。复合物的光物理行为对供体和受体部分的调制高度敏感。施主 - 受主对稳定基于此类复合物的电阻存储器中的场致电荷转移状态也至关重要,从而导致器件的低开关阈值电压、高开/关比和高耐用性。
Scope, Kinetics, and Mechanism of “On Water” Cu Catalysis in the C-N Cross-Coupling Reactions of Indole Derivatives
作者:Vrunda Malavade、Manish Patil、Mahendra Patil
DOI:10.1002/ejoc.201901542
日期:2020.2.7
Cu(I)/phenanthroline catalyzed C–N cross coupling reactions of indole derivatives in the aqueous and DME/H2O solvent systems are faster than the reactions performed in organic solvents (DME). Theoretical calculations show that water can induce rate acceleration by stabilizing the transition state of the rate‐determining oxidative addition step through hydrogen‐bonding interactions.
在水性和DME / H 2 O溶剂体系中,Cu(I)/菲咯啉催化的吲哚衍生物的C–N交叉偶联反应比在有机溶剂(DME)中进行的反应更快。理论计算表明,水可以通过氢键相互作用来稳定决定速率的氧化加成步骤的过渡态,从而诱导速率加速。