Rational Syntheses of Porphyrins Bearing up to Four Different Meso Substituents
作者:Polisetti Dharma Rao、Savithri Dhanalekshmi、Benjamin J. Littler、Jonathan S. Lindsey
DOI:10.1021/jo000882k
日期:2000.11.1
using EtMgBr and an acid chloride has been refined. A new procedure for the preparation of unsymmetrical diacyl dipyrromethanes has been developed that involves (1) monoacylation with EtMgBr and a pyridyl benzothioate followed by (2) introduction of the second acyl unit upon reaction with EtMgBr and an acid chloride. The scope of these acylation methods has been examined by preparing multigram quantities
Synthesis of Thiol-Derivatized Europium Porphyrinic Triple-Decker Sandwich Complexes for Multibit Molecular Information Storage
作者:Junzhong Li、Dorota Gryko、Rajeev B. Dabke、James R. Diers、David F. Bocian、Werner G. Kuhr、Jonathan S. Lindsey
DOI:10.1021/jo000490d
日期:2000.11.1
Lanthanide triple-deckersandwich molecules employing porphyrins and phthalocyanines afford four cationic states and are very attractive for molecular information storage applications. Five triple-decker building blocks have been prepared of the type (phthalocyanine)Eu(phthalocyanine)Eu(porphyrin), each bearing one iodo, one ethyne, or one iodo and one ethyne group attached to the porphyrin unit. Two
在分子水平上存储多个信息位需要具有大量不同氧化态的分子。使用卟啉和酞菁的镧系元素三层三明治分子具有四个阳离子态,对于分子信息存储应用非常有吸引力。已经制备了五种三层结构的砌块,其类型为(酞菁)Eu(酞菁)Eu(卟啉),每个带有一个连接到卟啉单元上的碘,一个乙炔或一个碘和一个乙炔基团。用S-乙酰基硫代苯基单元衍生化具有不同氧化电位的两个三层积木,以附着到电活性表面上。为了探索由三层结构组成的阵列的准备工作,这可能导致存储更多的位,制备了两种类型的三层组的二元组。通过重复的Sonogashira偶联制备带有一个S-乙酰基硫代苯基单元的三层乙炔连接的二联体,并通过改进的Glaser偶联制备丁二炔连接的二联体。通过吸收光谱法,激光解吸质谱法和(1)1 H NMR光谱法表征三层。硫醇衍生的三层化合物通过原位裂解硫醇保护基团在金上形成自组装单分子层(SAMs)。每个阵列的SAM具有电化学稳定性,并表现
Swallowtail Porphyrins: Synthesis, Characterization and Incorporation into Porphyrin Dyads
作者:Patchanita Thamyongkit、Markus Speckbacher、James R. Diers、Hooi Ling Kee、Christine Kirmaier、Dewey Holten、David F. Bocian、Jonathan S. Lindsey
DOI:10.1021/jo049860e
日期:2004.5.1
(“swallowtail”) substituents at the meso positions of porphyrins results in highly soluble building blocks. Synthetic routes have been investigated to obtain porphyrin building blocks bearing 1−4 swallowtail groups. Porphyrin dyads have been synthesized in which the zinc or free base (Fb) porphyrins are joined by a 4,4‘-diphenylethyne linker and bear swallowtail (or n-pentyl) groups at the nonlinking meso positions
Diverse Redox-Active Molecules Bearing O-, S-, or Se-Terminated Tethers for Attachment to Silicon in Studies of Molecular Information Storage
作者:Arumugham Balakumar、Andrey B. Lysenko、Carole Carcel、Vladimir L. Malinovskii、Daniel T. Gryko、Karl-Heinz Schweikart、Robert S. Loewe、Amir A. Yasseri、Zhiming Liu、David F. Bocian、Jonathan S. Lindsey
DOI:10.1021/jo034944t
日期:2004.3.1
molecules to electroactive surfaces requires control over the nature of the tether (linker and surface attachment group). We have synthesized a collection of redox-active molecules bearing different linkers and surface anchor groups in free or protected form (hydroxy, mercapto, S-acetylthio, and Se-acetylseleno) for attachment to surfaces such as silicon, germanium, and gold. The molecules exhibit a number