作者:Sebastian Hahn、Julian Butscher、Qingzhi An、Angelina Jocic、Olena Tverskoy、Marcus Richter、Xinliang Feng、Frank Rominger、Yana Vaynzof、Uwe H. F. Bunz
DOI:10.1002/chem.201901139
日期:2019.5.28
their absorption spectra remained very similar to those of the constituting monomers. The dimers displayed greatly reduced fluorescence when compared to the monomers, suggesting that there is a significant interaction of the two azarene units in the excited state. Preliminary investigations showed that the dimers are attractive for application as acceptors in organic photovoltaic because they significantly
Synthesis and Structural Investigation of New Triptycene-Based Ligands: En Route to Shape-Persistent Dendrimers and Macrocycles with Large Free Volume
作者:Jonathan H. Chong、Mark J. MacLachlan
DOI:10.1021/jo701297q
日期:2007.11.1
Triptycene was used to build a series of ligands containing pyrazine groups for use in forming coordination frameworks and as model compounds toward target shape-persistent dendrimers and macrocycles. The phenylenediamine precursors are formed by controlled double nitration/reduction of triptycene, followed by condensation with triptycenyl o-quinone to form the ligands. Solid-state structures show
An efficient route to soluble triptycene tetraamines, shape-persistent molecules containing two ortho-phenylenediamine motifs, is reported. These tetraamines are stable, prepared in good yields, easily purified by column chromatography, and can be readily condensed to give a range of imidazole and pyrazine derivatives.
Highly selective synthesis of triptycene o-quinone derivatives and their optical and electrochemical properties
A convenient and efficient method for the selective synthesis of a series of triptycene o-quinone derivatives is described. The triptycene o-quinones, especially the ones containing the methoxy group(s) (electron donor) and the o-quinone group(s) (electron acceptor) simultaneously, show interesting intramolecular CT interactions and electrochemical properties. Moreover. DFT calculations display that introducing a strong electron-donor group into triptycene o-quinone results in an increasing of the HOMO energy level, which Subsequently decreases the HOMO-LUMO energy gap. (c) 2008 Elsevier Ltd. All rights reserved.
Synthesis of Triptycene-Substituted Azapentacene and Azahexacene Derivatives
作者:Philipp Biegger、Olena Tverskoy、Frank Rominger、Uwe H. F. Bunz
DOI:10.1002/chem.201603360
日期:2016.11.2
We describe the synthesis and characterization of novel iptycene‐substituted azaacenes by using either a classic condensation route (diamine plus ortho‐quinone) and/or a Pd‐catalyzed coupling of an aromatic diamine with an aromatic dihalide. The attachment of an iptycene unit leads to a significant blueshift (15 nm) in the UV/Vis spectra of these azaacenes. The iptycene unit stabilizes a hexaazahexacene