Synthesis and exploring the excited-state PES of photochromic hydrogen bond-assembled [2]rotaxane based on 1,3-Diazabicyclo-[3.1.0]hex-3-enes
作者:Mostafa Fasihi-Ramandi、Nosrat O. Mahmoodi、Atefeh Ghavidast、Farhad Shirini、Hossein Taherpour Nahzomi
DOI:10.1007/s11164-021-04425-7
日期:2021.6
While the thread with a para –NO2 substituent as stopper units was shown to be an excellent template for the synthesis of photochromic [2]rotaxanes. The structures of the [2]rotaxanes are established clearly in solution by chemical shifts of the 1H 13C NMR signals and UV–Vis spectra. A pronounced bathochromic shift was occurred in the excitation wavelength of photochoromic [2]rotaxanes compared with
在这里,首次报道了以双富马酸酯为线的光致变色氢键组装的[2]轮烷的合成。实际上,光致变色的1,3-二氮杂双环[3.1.0]己-3-烯部分被用作终止子,而两个原子的间隔子在四氢噻吩大环的截留反应中具有良好的结合位点。此外,光致变色[2]轮烷的产率高度依赖于NO 2取代基塞子。带有对位NO 2取代基作为终止单元的线被证明是光致变色[2]轮烷的合成的极好模板。通过[ 1 H 13的化学位移]可以清楚地确定[2]轮烷的结构。C NMR信号和UV-Vis光谱。与光致变色线的吸收带相比,光致变色[2]轮烷的激发波长发生了显着的红移。因此,这些组织可以应用于光驱动分子开关和电动机。鉴定了在紫外线辐射下反式和顺式几何光异构体的可逆转变。在其他努力中,已经通过计算检查了富马酸酯连接体反式至顺式相互转化过程的可能性,并且似乎在一定程度上引起了双富马酸酯连接体在四内酰胺大环内的横向。
Photochromism of azobenzene-thiol-1,3-diazabicyclo-[3.1.0]hex-3-ene on silver nanoparticles
作者:Nosrat O. Mahmoodi、Atefeh Ghavidast、Safoura Mirkhaef、Mohammad Ali Zanjanchi
DOI:10.1016/j.dyepig.2015.03.014
日期:2015.7
azobenzene-thiol terminated photochromic derivatives is designed, synthesized and used to form self-assembled monolayers on silver nanoparticles. The photochromic behavior of 1,3-diazabicyclo-[3.1.0]hex-3-ene joined with surface plasmon resonance absorption band of silver nanoparticles and photoisomerisable azobenzene is presented. The ultraviolet–visible experiments demonstrated that electronic transitions
Synthesis and photochromic properties of a novel thiol-terminated 1,3-diazabicyclo[3.1.0]hex-3-ene on silver nanoparticles
作者:Atefeh Ghavidast、Nosrat O. Mahmoodi、Mohammad Ali Zanjanchi
DOI:10.1016/j.molstruc.2013.05.054
日期:2013.9
Abstract Inorganic nanoparticles functionalized with organic photochromes have been used for a much wider variety of applications. In this work, we have designed and synthesized a novelphotochromic 1,3-diazabicyclo[3.1.0]hex-3-ene with a thiol-terminal group to form a self-assembled monolayer on the silver nanoparticles (AgNPs). The prepared photochromic material was characterized using X-ray diffraction
Facile synthesis of magnetic photo-responsive nanoparticles based on 1,3-diazabicyclo[3.1.0]hex-3-en: An enhanced adsorption of toxic dyes from aqueous solution under sunlight
作者:Mojtaba Shamsipur、Atefeh Ghavidast
DOI:10.1016/j.molstruc.2022.133130
日期:2022.9
Tertiary amine-promoted enone aziridination: investigations into factors influencing enantioselective induction
作者:Alan Armstrong、Robert D.C. Pullin、Chloe R. Jenner、Klement Foo、Andrew J.P. White、James N. Scutt
DOI:10.1016/j.tetasy.2013.11.008
日期:2014.1
synthesised (up to 77% ee) via a chiral tertiary amine-promoted nucleophilic aziridination of α,β-unsaturated ketones utilising in situ generated N–N ylides (aminimines). A wide range of chiral tertiary amines were synthesised and evaluated, allowing structure–activity relationships to be drawn. The most efficient promoter for asymmetric aziridination, quinine, was assessed with several enones to ascertain