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。
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。
Analgesic activity of cyclic imides: 1,8-naphthalimide and 1,4,5,8-naphthalenediimide derivatives
作者:Adriano Defini Andricopulo、Luciane A Müller、Valdir Cechinel Filho、Graziela S Cani、Juliana F Roos、Rogério Corrêa、Adair Roberto S Santos、Ricardo José Nunes、Rosendo Augusto Yunes
DOI:10.1016/s0014-827x(00)00027-6
日期:2000.4
In early studies, we have reported the synthesis and biological activities of several cyclic imides. The present study describes the analgesic activity of 1,8-naphthalimide and 1,4,5,8-naphthalenediimide derivatives in a standard murine model of analgesia. The pharmacological results show that all compounds studied, given intraperitoneally, produced significant inhibition of acetic acid-induced abdominal constrictions. At the ID50 (mu mol/kg) level, these cyclic imide derivatives were about 40-270-fold more potent in this assay than aspirin and acetaminophen, two well-known and widely used analgesics. These results extend previous studies on the analgesic activity of cyclic imides. (C) 2000 Elsevier Science S.A. All rights reserved.
Polymer Electrolyte, Membrane/Electrode Assembly, and Fuel Cell
申请人:Itou Takayuki
公开号:US20070231652A1
公开(公告)日:2007-10-04
A polymer electrolyte having a repetitive structure represented by the following formula (1):
wherein B represents a single bond or a bivalent group, A represents a bivalent aromatic group, Y represents —SO
2
—, —SO— or —CO—, R
1
represents a substituent, n1 represents an integer of from 0 to 3, L represents a perfluoroalkylene group, and M represents an ionic group.
US7947406B2
申请人:——
公开号:US7947406B2
公开(公告)日:2011-05-24
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