Tuning the aggregation-induced enhanced emission behavior and self-assembly of phosphole-lipids
作者:Zisu Wang、Benjamin S. Gelfand、Pengcheng Dong、Simon Trudel、Thomas Baumgartner
DOI:10.1039/c5tc03311j
日期:——
Herein, we report on the synthesis, self-assembly, as well as the photophysical properties of a novel series of P-benzylated phosphole-lipids.
在这里,我们报告了一种新型系列的P-苄基磷醇脂的合成、自组装以及光物理性质。
External-Stimuli Responsive Photophysics and Liquid Crystal Properties of Self-Assembled “Phosphole-Lipids”
作者:Yi Ren、Wang Hay Kan、Matthew A. Henderson、Paolo G. Bomben、Curtis P. Berlinguette、Venkataraman Thangadurai、Thomas Baumgartner
DOI:10.1021/ja206784f
日期:2011.10.26
induce liquid crystalline and soft crystal phase behavior in the solid state, which was studied by differential scanning calorimetry (DSC), polarized optical microscopy (POM), and variable temperature powder X-ray diffraction (VT-PXRD). The studies revealed that both conjugated backbones and counteranions work together to organize the systems into different morphologies (liquidcrystal/soft crystal). Dithieno[3
Exploring the Lewis Acidity and Reactivity of Neutral Pentacoordinate Dithienophospholes
作者:Nayanthara Asok、Benjamen A. Zondag、Ekadashi Pradhan、Mary Odagwe、Jesse LeBlanc、Joshua C. Walsh、Graham J. Bodwell、Tao Zeng、Thomas Baumgartner
DOI:10.1002/chem.202300173
日期:——
The square pyramidal geometry in neutral pentavalent dithienophosphole-based Lewis acids is perturbed to distorted trigonal bipyramidal by implementing bulky substituents. With improved accessibility to the P center, these compounds are capable of mediating hydroboration of the catechol proceeding through umpolung of a hydride to a protonic species.
通过实施庞大的取代基,中性五价二噻吩并膦基路易斯酸中的方锥体几何结构被扰乱为扭曲的三角双锥体。通过提高对 P 中心的可及性,这些化合物能够通过将氢化物 umpolung 到质子物质来介导儿茶酚的硼氢化反应。
Structure–Property Studies Toward the Stimuli-Responsive Behavior of Benzyl–Phospholium Acenes
作者:Yi Ren、Thomas Baumgartner
DOI:10.1021/ic2026335
日期:2012.2.20
A series of new phospholium acenes, quaternized with benzyl groups, was synthesized. Both different pi-conjugated backbones and electron-donating/-withdrawing benzyl groups were systematically studied to reveal details on the nature of their structural dynamics. Extensive NMR studies (including variable concentration/temperature and 2D) suggested that the systems undergo intramolecular conformation changes in solution that are strongly affected by the electronic nature of the benzyl group, and thereby significantly affecting the phosphole-typical sigma*-pi* interaction. This class of "smart" phosphole system exhibits enhanced emission in the solid state and at low temperature in solution, due to aggregation-induced enhanced emission (AIEE). The dynamic features of these smart phospholes also endow the systems with external-stimuli (thermal and mechanical force) responsive photophysical properties. Crystallographic studies and theoretical calculations confirmed that the thermal response of the phospholium system is mainly clue to the conformation changes in solution, while the mechanical response of the system can be attributed to both the intramolecular conformation and the intermolecular organization changes in the solid state.
Phosphorus-Based Heteropentacenes: Efficiently Tunable Materials for Organic n-Type Semiconductors
作者:Yvonne Dienes、Matthias Eggenstein、Tamás Kárpáti、Todd C. Sutherland、László Nyulászi、Thomas Baumgartner
DOI:10.1002/chem.200801549
日期:2008.11.10
achieved by simple chemical modifications. The materials show strong photoluminescence in solution and in the solid state that depends on the electronic nature of the phosphorus center. Electrochemical studies revealed that the phosphorus atom intrinsically furnishes materials with n-channel or ambipolar behavior, also depending on its electronic nature. The experimental data were verified by DFT quantum