Refined methods for the synthesis of meso-substituted A3- and trans-A2B-corrolesElectronic supplementary information (ESI) available: table describing attempts to optimize the reaction of MesDPM 30 with aldehyde 11. See http://www.rsc.org/suppdata/ob/b2/b208950e/
作者:Daniel T. Gryko、Beata Koszarna
DOI:10.1039/b208950e
日期:2003.1.13
one-pot synthesis of A3-corroles via "3 + 4" condensation of an aldehyde with a pyrrole followed by macrocyclization mediated by DDQ. After thorough examination of various reaction parameters (reactivity of an aldehyde, catalyst, solvent, concentration, time etc.) we have elaborated three different sets of conditions for different types of aromatic aldehydes--highly reactive, moderately reactive and sterically
This invention provides novel high density memory devices that are electrically addressable permitting effective reading and writing, that provide a high memory density (e.g., 10
15
bits/cm
3
), that provide a high degree of fault tolerance, and that are amenable to efficient chemical synthesis and chip fabrication. The devices are intrinsically latchable, defect tolerant, and support destructive or non-destructive read cycles. In a preferred embodiment, the device comprises a fixed electrode electrically coupled to a storage medium having a multiplicity of different and distinguishable oxidation states wherein data is stored in said oxidation states by the addition or withdrawal of one or more electrons from said storage medium via the electrically coupled electrode.