A Facile Synthesis and Properties of Multicarbazole Molecules Containing Multiple Vinylene Bridges
摘要:
Multibranched pi-conjugated materials and hyperbranched polymers have received considerable interest in both academic research and industrial applications because of their unusual molecular structures and properties. In this communication, we provide an efficient approach to synthesize two novel pi-conjugated multibranch compounds, which have good solubility and are nanosize (about 5 nm). The double bonds of the multibranch compounds are synthesized using solvent-free Wittig-Horner-Emmons reactions. The reaction conditions are simple and mild. Their optical properties are discussed too.
Synthesis, photophysical, and electrochemical properties of triazolyl dendrimers with thiazolylchalcone surface unit
作者:Kannan Rajavelu、Perumal Rajakumar
DOI:10.1080/00397911.2017.1385815
日期:2018.1.2
ABSTRACT Synthesis of novel triazolyl dendrimers with thiazolylchalcone surface group and triazole as bridging unit has been achieved in good yields by click chemistry through convergent approach. All the triazolyl dendrimers showed an absorption band between 293 and 336 nm and an emission band between 430 and 435 nm. The intensity of absorption and emission bands increases on increasing the number
Exceptional Adsorption and Binding of Sulfur Dioxide in a Robust Zirconium-Based Metal–Organic Framework
作者:Joseph H. Carter、Xue Han、Florian Y. Moreau、Ivan da Silva、Adam Nevin、Harry G. W. Godfrey、Chiu C. Tang、Sihai Yang、Martin Schröder
DOI:10.1021/jacs.8b08433
日期:2018.11.21
We report a record-high SO2 adsorption capacity of 12.3 mmol g–1 in a robust porous material, MFM-601, at 298 K and 1.0 bar. SO2 adsorption in MFM-601 is fully reversible and highly selective over CO2 and N2. The binding domains for adsorbed SO2 and CO2 molecules in MFM-601 have been determined by in situ synchrotron X-ray diffraction experiments, giving insights at the molecular level to the basis
我们报告了在 298 K 和 1.0 bar 下,在坚固的多孔材料 MFM-601 中,SO2 吸附容量达到创纪录的 12.3 mmol g-1。MFM-601 中的 SO2 吸附是完全可逆的,并且对 CO2 和 N2 具有高度选择性。MFM-601 中吸附的 SO2 和 分子的结合域已通过原位同步加速器 X 射线衍射实验确定,在分子水平上提供了观察到的高选择性基础的见解。
A self-calibrating dual responsive platform for the sensitive detection of sulfite and sulfonic derivatives based on a robust Hf(<scp>iv</scp>) metal–organic framework
作者:Kai Xing、Rui-Qing Fan、Xiao-Yuan Liu、Shuang Gai、Wei Chen、Yu-Lin Yang、Jing Li
DOI:10.1039/c9cc07869j
日期:——
A robust Hf-MOF exhibits highly-sensitive and opposite ratiometric fluorescence response towards sulfite and sulfonic derivatives.