orthogonal self‐assembly of donor and acceptor chromophores has been demonstrated. Suitably designed 1,5‐dialkoxynaphthalene (DAN) and naphthalene tetracarboxylic acid diimide (NDI) derivatives were used as the donor and acceptor systems, respectively. The molecular design for self‐sorting relies upon the precise control over the placement of the self‐complementaryhydrogen‐bonding units (amide functionality)
A Systematic Study of Thermochromic Aromatic Donor−Acceptor Materials
作者:Paul M. Alvey、Joseph J. Reczek、Vincent Lynch、Brent L. Iverson
DOI:10.1021/jo101498b
日期:2010.11.19
interesting thermochromic behavior, Dan and Ndi side chains were systematically altered and their 1:1 mixtures were studied. We have previously speculated that the presence or absence of steric interactions due to side chain branching on the aromatic units controlled the level of color change associated with crystallization. Results from the present study further refine this conclusion including a key crystal
富电子二烷氧基萘 (Dan) 和缺电子 1,4,5,8-萘四甲二亚胺 (Ndi) 衍生物的摩尔混合物 (1:1) 形成高度可调的柱状中间相,由于电荷转移吸收而呈深红色源自交替的面心堆叠。某些 Dan-Ndi 混合物在从中间相结晶时经历了从深红色到几乎无色的剧烈颜色变化。在这个过程中,固体的宏观形态没有改变。为了研究这种有趣的热致变色行为的起源,系统地改变了 Dan 和 Ndi 侧链,并研究了它们的 1:1 混合物。我们之前推测,由于芳族单元上的侧链支化,空间相互作用的存在或不存在控制了与结晶相关的颜色变化水平。本研究的结果进一步完善了这一结论,包括为观察到的结果提供结构原理的关键晶体结构。
Near instantaneous gelation of crude oil using naphthalene diimide based powder gelator
We report a naphthalene diimide based gelator that when applied in powder form can solidify heavy crude oil from water in seconds. The exceptional mechanical strength of the resultant gel, easy recoverability of oil, ability to congeal oil at 0 °C, and the negligible aqueous solubility and biotoxicity makes our compound by far the best reported PSOG for oilspill remediation.
Spectroscopic Probing of the Dynamic Self-Assembly of an Amphiphilic Naphthalene Diimide Exhibiting Reversible Vapochromism
作者:Mohit Kumar、Subi J. George
DOI:10.1002/chem.201101642
日期:2011.9.26
Fluorescent nose: The reversible “turn‐on” vapochromism of a self‐assembled amphiphilicnaphthalenediimide derivative in solution and film states is presented. This property was found to be due to solvent–vapor‐responsive, dynamic reorganization in molecular packing in going from J‐type aggregates (blue fluorescent; see left‐hand side of scheme) to preassociated H‐type excimer states, with enhanced
An amic acid or amic ester precursor can be applied to a substrate and thermally converted into a thin organic semiconducting layer of the corresponding arylene diimide. This semiconducting layer can be used in various semiconductive articles such as organic light emitting diode (OLED), photodetector, sensor, logic circuit, memory element, capacitor, photovoltaic (PV) cell, or electronic devices. In this manner, the arylene diimide need not be coated but is generated in situ from a solvent-soluble and easily coated precursor compound.