Electronically Regulated Thermally and Light-Gated Electron Transfer from Anions to Naphthalenediimides
作者:Samit Guha、Flynt S. Goodson、Sovan Roy、Lucas J. Corson、Curtis A. Gravenmier、Sourav Saha
DOI:10.1021/ja2055726
日期:2011.10.5
Anion-induced electrontransfer (ET) to π-electron-deficient naphthalenediimides (NDIs) can be channeled through two distinct pathways by adjusting the Lewis basicity of the anion and the π-acidity of the NDI: (1) When the anion and NDI are a strong electron donor and acceptor, respectively, positioning the HOMO of the anion above the LUMO of the NDI, a thermal anion → NDI ET pathway is turned ON.
通过调节阴离子的路易斯碱度和 NDI 的 π 酸度,阴离子诱导电子转移 (ET) 到缺乏 π 电子的萘二亚胺 (NDI) 可以通过两种不同的途径进行引导:(1) 当阴离子和 NDI分别是强电子供体和受体,将阴离子的 HOMO 定位在 NDI 的 LUMO 上方,热阴离子 → NDI ET 通路打开。(2) 当弱路易斯碱性阴离子的 HOMO 低于 NDI 的 LUMO 但仍高于其 HOMO 时,热 ET 关闭,但光可以激活前所未有的阴离子 → (1)*NDI 光诱导 ET 通路来自阴离子的 HOMO 到光生 (1)*NDI 的 SOMO-1。两种途径都会产生 NDI(•-) 自由基阴离子。
Boundaries of Anion/Naphthalenediimide Interactions: From Anion−π Interactions to Anion-Induced Charge-Transfer and Electron-Transfer Phenomena
作者:Samit Guha、Flynt S. Goodson、Lucas J. Corson、Sourav Saha
DOI:10.1021/ja303173n
日期:2012.8.22
extensively studied these interactions using powerful experimental techniques. Herein, we demonstrate that, depending on the electron-donating abilities (Lewis basicity) of anions and electron-accepting abilities (π-acidity) of NDIs, modes of anion-NDI interactions vary from extremely weak non-chromogenic anion-πinteractions to chromogenic anion-induced charge-transfer (CT) and electron-transfer (ET) phenomena
PHOTOELECTRIC CONVERSION DEVICE AND SOLAR CELL USING THE SAME
申请人:AKIYAMA Seiji
公开号:US20120211082A1
公开(公告)日:2012-08-23
There is provides a photoelectric conversion device material which can be used as an electrode buffer material for a solar cell or the like and can improve durability while maintaining the interaction with an electrode and mobility; a photoelectric conversion device using the photoelectric conversion device material; and a solar cell using the photoelectric conversion device. A photoelectric conversion device containing a buffer layer and an active layer, wherein the buffer layer contains a compound represented by the following general formula (I), the active layer contains an n-type semiconductor, and the n-type semiconductor is a compound having a solubility in toluene of 0.5% by weight or more at 25° C. and having an electron mobility of 1.0×10
−6
cm
2
/Vs or more.
Quantitative prediction of excited-state decay rates for radical anion photocatalysts
作者:Leandro D. Mena、José L. Borioni、Sofia Caby、Patrick Enders、Miguel A. Argüello Cordero、Franziska Fennel、Robert Francke、Stefan Lochbrunner、Javier I. Bardagi
DOI:10.1039/d3cc02534a
日期:——
We present a computational approach for predicting key properties of organic radicalanions, including excited-state lifetimes and redox potentials. The approach shows good agreement with experimental data and has potential for in silico screening to facilitate the rational design of photocatalysts.
Comparison of microwave-assisted and conventional preparations of cyclic imides
作者:Sunil K. Upadhyay、Subramanya R.K. Pingali、Branko S. Jursic
DOI:10.1016/j.tetlet.2010.02.092
日期:2010.4
Microwave-assisted preparation of several cyclic imides was performed with four different cyclic anhydrides. All the reactions are significantly faster and the isolated yields are significantly higher compared to conventionally heated reactions. Furthermore, many of these reactions can be performed with a minimal amount of solvent, thereby enabling the synthetic chemist to obtain high quantities of pure cyclic imides in a matter of hours. (C) 2010 Elsevier Ltd. All rights reserved.