Solvent-dependent effect by carbon dioxide on the photoreactions of (9-anthryl)alkylamines
摘要:
The effect Of CO2 on a photoreaction was first studied systematically by using (9-anthryl)alkylamines (APA, AEA, and AMA) as the starting compound. From close scrutiny of the results, the CO, effect was clearly observed and was well rationalized by the previously reported novel solvent dependence of the amine-CO2 reversible reactions. For instance, the yield of the dimer (h-t from APA or AEA, h-t+h-h from AMA) obtained in MeOH or DMSO was higher under CO2 than under argon and this was ascribed to formation of either ammonium bicarbonate/carbonate in MeOH or carbamic acid in DMSO, which will prevent the nitrogen lone pair from being involved in electron-transfer reactions. In fact, the electron-transfer side reactions producing 1-3 in DMSO were strongly inhibited under CO2. Also, due to formation of noncovalent linkage between the ammonium cation and the carbamate anion in 2-PrOH, the proportion of h-h relative to h-t produced from AMA in 2-PrOH was increased by carrying out the reaction under CO2. (c) 2007 Elsevier Ltd. All rights reserved.
N-Substituent Effects in the Selective Delivery of Polyamine Conjugates into Cells Containing Active Polyamine Transporters
作者:Richard Andrew Gardner、Jean-Guy Delcros、Fanta Konate、Fred Breitbeil、Bénédicte Martin、Michael Sigman、Min Huang、Phanstiel
DOI:10.1021/jm0497040
日期:2004.11.1
N(1)-anthracen-9-ylmethyl, N(1)-2-(anthracen-9-yl)ethyl, N(1)-3-(anthracen-9-yl)propyl, and pyren-1-ylmethyl. The polyamine architecture was also altered and ranged from diamine to triamine and tetraamine systems. Biological activities in L1210 (murine leukemia), Chinese hamster ovary (CHO), and CHO's polyamine transport-deficient mutant (CHO-MG) cell lines were investigated via IC(50) cytotoxicity determinations
Platinum and intercalation: To achieve synergistic effects between intercalation and DNA platination, new pyrazolyl‐diamine PtII complexes containing anthracenyl (L2Pt) or acridine orange (L3Pt) groups were created, and their DNA interaction and cytotoxicity were investigated. L2Pt showed the highest cytotoxic potency, probably due to a different mode of action from those of L3Pt or cis‐DDP.
Synthesis and Characterization of Solution-Processable Core-Cyanated Perylene-3,4;9,10-bis(dicarboximide) Derivatives
作者:Shinji Ando、Antonio Facchetti、Tobin J. Marks
DOI:10.1021/ol1020338
日期:2010.11.5
Core-cyanated perylene-3,4;9,10-bis(carboxyimide) derivatives N-functionalized with tethered anthracenes (PDI3A-CN2, PDI4A-CN2) and the corresponding solution-processable cycloadduct precursors (PDI3A-CA-CN2, PDI4A-CA-CN2) were synthesized and their optical, electrochemical, and thermal properties characterized. These derivatives exhibit HOMO−LUMO energy gaps of ∼2.1−2.3 eV and first reduction potentials
Organic semiconductor materials and precursors thereof
申请人:Facchetti Antonio
公开号:US20080249309A1
公开(公告)日:2008-10-09
The present teachings provide novel organic semiconductor compounds and their soluble precursors, methods for preparing these compounds and precursors, as well as compositions, materials, articles, structures, and devices that incorporate such compounds.