scholarly journals Triple-Columned and Multiple-Layered 3D Polymers: Design, Synthesis, Aggregation-Induced Emission (AIE), and Computational Study

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Guanzhao Wu ◽  
Yangxue Liu ◽  
Zhen Yang ◽  
Liulei Ma ◽  
Yao Tang ◽  
...  
Keyword(s):  
Biological Sciences ◽  
Computational Analysis ◽  
Computational Study ◽  
Conjugation System ◽  
One Pot ◽  
Design Synthesis ◽  
X Ray ◽  
H Nmr ◽  
Suzuki Polycondensation ◽  
Step Growth

Conjugated polymers and oligomers have great potentials in various fields, especially in materials and biological sciences because of their intriguing electronic and optoelectronic properties. In recent years, the through-space conjugation system has emerged as a new assembled pattern of multidimensional polymers. Here, a novel series of structurally condensed multicolumn/multilayer 3D polymers and oligomers have been designed and synthesized through one-pot Suzuki polycondensation (SPC). The intramolecularly stacked arrangement of polymers can be supported by either X-ray structural analysis or computational analysis. In all cases, polymers were obtained with modest to good yields, as determined by GPC and 1H-NMR. MALDI-TOF analysis has proven the speculation of the step-growth process of this polymerization. The computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic transition. Experimental results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.

One-pot synthesis of 5-(8-ethoxycarbonyl-1-naphthyl)-10,15,20-triphenyl porphyrin (ENTPP) and spontaneous resolution upon crystallization

2011 ◽  
Vol 15 (03) ◽  
pp. 197-201 ◽  
Author(s):  
Juanxia Yang ◽  
Jiaxun Jiang ◽  
Weiguang Fang ◽  
Xiaoxu Kai ◽  
Chuanjiang Hu ◽  
...  
Keyword(s):  
Soret Band ◽  
Ester Group ◽  
Spontaneous Resolution ◽  
Cd Spectra ◽  
One Pot ◽  
Nmr Spectrum ◽  
X Ray ◽  
X Ray Crystallography ◽  
H Nmr ◽  
Entire Structure

5-(8-ethoxycarbonyl-1-naphthyl)-10,15,20-triphenyl porphyrin (ENTPP) has been synthesized in a one-pot reaction, and the corresponding chiral crystalline samples have been obtained by spontaneous resolution. 1 H NMR spectrum suggests it is mononaphthyl substituted species and an ethyl group is over the porphyrin plane. The structure has been further confirmed by X-ray crystallography. ENTPP·C6H14 (C57H50N4O2 ): monoclinic, P21, a = 10.707(2) Å, b = 12.203(2) Å, c = 17.858(4) Å, β = 103.06(3)°, V = 2272.8(8) Å3, Z = 2. The 8-position substituent, ester group, lies above the porphyrin plane and leads to the conformational chirality. The entire structure is built up with homochiral molecules, which leads to a chiral crystal through packing in P21 space group. Circular dichroism (CD) spectra have exhibited remarkable absorptions in the Soret band region, which further confirms the homochirality of the crystalline samples.

Organic Nanosynthesis of Ancient Windmill-like Window Gridarenes at Molecular Scale

2018 ◽  
Author(s):  
Ying Wei ◽  
Quanyou Feng ◽  
Hui Liu ◽  
Xiuling Wang ◽  
Dongqing Lin ◽  
...  
Keyword(s):  
Main Product ◽  
Synthesis Method ◽  
Synthetic Method ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
H Nmr ◽  
Cyclization Process ◽  
Molecular Scale ◽  
Insight Into

We focus on another kind of square-type unit nanogrids with starlike divergent extensibility. As a result, square windmill-like nanogrid <b>WG4</b> have been successfully synthesized by two different kinds of fluorene-based nanosynthons, namely I-shape nanosynthon and L-shape nanosynthon synthesis method. Besides <b>WG4</b>, triangle and hexagon windmill-like nanogrids (<b>WG3</b> and <b>WG5</b>) are also obtained via one-pot nanosynthesis of I-shape nanosynthon with <b>WG3</b> as the main product. For the L-shape nanosynthon synthetic method, the cyclization process possesses higher selectivity, resulting to an excellent yield for <b>WG</b>4. In addition, two stereoisomers of the triangle nanogrids, <i>cis-trans</i>-<b>WG3</b> and <i>cis-cis-</i><b>WG3</b>, were separated and characterized from the single-crystal X-ray diffraction and <sup>1</sup>H NMR analyses for getting insight into the configuration of the triangle nanogrids with the skeleton planarization for the <i>trans</i>-configuration and deplanarization for the <i>cis</i>-configuration.

Organic Nanosynthesis of Ancient Windmill-like Window Gridarenes at Molecular Scale

2018 ◽  
Author(s):  
Ying Wei ◽  
Quanyou Feng ◽  
Hui Liu ◽  
Xiuling Wang ◽  
Dongqing Lin ◽  
...  
Keyword(s):  
Main Product ◽  
Synthesis Method ◽  
Synthetic Method ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
H Nmr ◽  
Cyclization Process ◽  
Molecular Scale ◽  
Insight Into

We focus on another kind of square-type unit nanogrids with starlike divergent extensibility. As a result, square windmill-like nanogrid <b>WG4</b> have been successfully synthesized by two different kinds of fluorene-based nanosynthons, namely I-shape nanosynthon and L-shape nanosynthon synthesis method. Besides <b>WG4</b>, triangle and hexagon windmill-like nanogrids (<b>WG3</b> and <b>WG5</b>) are also obtained via one-pot nanosynthesis of I-shape nanosynthon with <b>WG3</b> as the main product. For the L-shape nanosynthon synthetic method, the cyclization process possesses higher selectivity, resulting to an excellent yield for <b>WG</b>4. In addition, two stereoisomers of the triangle nanogrids, <i>cis-trans</i>-<b>WG3</b> and <i>cis-cis-</i><b>WG3</b>, were separated and characterized from the single-crystal X-ray diffraction and <sup>1</sup>H NMR analyses for getting insight into the configuration of the triangle nanogrids with the skeleton planarization for the <i>trans</i>-configuration and deplanarization for the <i>cis</i>-configuration.

One-pot four component domino strategy for the synthesis of novel spirooxindole pyrrolizine linked 1,2,3-triazoles via stereo- and regioselective [3 + 2] cycloaddition reaction in acidic medium

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 9297-9303 ◽  
Author(s):  
Rajeswari M. ◽  
Sudesh Kumari ◽  
Jitender M. Khurana
Keyword(s):  
Acidic Medium ◽  
Mass Spectra ◽  
Cycloaddition Reaction ◽  
One Pot ◽  
X Ray ◽  
H Nmr ◽  
C Nmr

An efficient, one-pot four component condensation has been reported for the synthesis of spirooxindole pyrrolizine linked 1,2,3-triazolesvia[3 + 2] cycloaddition. The structures were confirmed by1H NMR,13C NMR, mass spectra and X-ray.

Cp′—X—Cp′-überbrückte μ-Cyclooctatetraen- und -trien-Zweikernkomplexe des Chroms sowie Vanadiums (Cp′ = η5-C5H4, X = CH2, SiMe2, GeMe2) / Binuclear Cp′–X–Cp′-Bridged μ-Cyclooctatetraene and -triene Complexes of Chromium as well as Vanadium (Cp′ = η5-C5H4, X = CH2, SiMe2, GeMe2)

1990 ◽  
Vol 45 (2) ◽  
pp. 221-238 ◽  
Author(s):  
Bernd Bachmann ◽  
Gerhard Baum ◽  
Jürgen Heck ◽  
Werner Massa ◽  
Bernd Ziegler
Keyword(s):  
Temperature Dependent ◽  
Nmr Studies ◽  
One Pot ◽  
X Ray ◽  
H Nmr ◽  
Metal Metal ◽  
Structure Determinations ◽  
Work Up ◽  
Conditions Of Work ◽  
By Products

Synfacial binuclear μ-Cot complexes of the general formula X(Cp′M)2— μ-Cot with Cp′—X—Cp′ as an additional bridging group (M = V, Cr; Cot = cyclooctatetraene) can be prepared by a one-pot reaction of the appropriate metal dichlorides with K2Cot and Li2[(C5H4)2X]. For M = V the vanadocenophanes {V(Cp'2X)}2 (X = SiMe2, GeMe2) are isolated as by-products. Depending on the conditions of work-up for M = Cr µ-(σ:η3:η2-cyclooctatriene) complexes can be obtained instead of the μ-Cot compounds. X-ray structure determinations of several μ-Cot species attest only a poor influence of the bridging group X on the metal metal bond. Low temperature 1H NMR spectra of the dichromium μ-Cot complexes show that the rapid Cotrotation can be frozen below T = 200 K. Temperature dependent 1H NMR studies indicate a diamagnetic-paramagnetic equilibrium for the binuclear μ-C8H10 compounds, wherein a Cr,Crmultiple bond must be assumed.

scholarly journals Design, synthesis, and insecticidal activity of novel 1-alkoxy-2-nitroguanidines

RSC Advances ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 1838-1845 ◽  
Author(s):  
Dongyan Yang ◽  
Chuan Wan ◽  
Yumei Xiao ◽  
Chuanliang Che ◽  
Changhui Rui ◽  
...  
Keyword(s):  
High Resolution ◽  
Insecticidal Activity ◽  
X Ray Diffraction ◽  
Design Synthesis ◽  
X Ray ◽  
H Nmr ◽  
Lead Compounds ◽  
Alkoxy Groups ◽  
C Nmr

In searching for new insecticidal lead compounds, a series of novel 1-alkoxy-2-nitroguanidine, guadipyr analogues bearing alkoxy groups were designed, synthesized and confirmed by 1H NMR, 13C NMR, high-resolution MS and X-ray diffraction.

scholarly journals Design, synthesis and anticancer activity evaluation of aziridine-1,2,3-triazole hybrid derivatives

2018 ◽  
Vol 24 (2) ◽  
pp. 109-112 ◽  
Author(s):  
Hong-Ru Dong ◽  
Jian-Guo Wu
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Proton Nuclear Magnetic Resonance ◽  
Human Leukemia ◽  
Anticancer Activities ◽  
One Pot ◽  
Design Synthesis ◽  
H Nmr ◽  
Highly Active ◽  
Nuclear Magnetic

AbstractNew 1-aryl-4-[(aziridine-1-yl)diarylmethyl]-5-methyl-1H-1,2,3-triazole derivatives7a–iwere synthesized by a one-pot reaction of diaryl-(1-aryl-5-methyl-1H-1,2,3-triazol-4-yl)methanols6a–iderived from 1-aryl-5-methyl-1H-1,2,3-triazole-4-carboxylic acids4a–c. Structures of compounds7a–iwere confirmed by analysis of proton nuclear magnetic resonance (1H NMR) and carbon-13 nuclear magnetic resonance (13C NMR), mass spectrometry (MS) and infrared (IR) data. The structure of compound7fwas studied by X-ray diffraction analysis. The anticancer activities of compounds7a–iagainst human leukemia HL-60 cells and human hepatoma G2 cells were evaluated. Some of the compounds are highly active.

Suzuki polycondensation: a simple way for synthesis of new polyazines containing thiophene and fluorene moieties

e-Polymers ◽  
2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Iulia Mihai ◽  
Maria Ivanoiu ◽  
Loredana Vacareanu (Stafie) ◽  
Mircea Grigoras
Keyword(s):  
Thermal Properties ◽  
Diffraction Study ◽  
Crystalline Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Suzuki Polycondensation ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Tga Analysis

AbstractTwo novel polyazines were successfully synthesized via palladiumcatalyzed Suzuki coupling method of N,N'-bis(5-bromothiophene)-2-aldehyd azine with 2,5-thiophenediboronic acid and 9,9-dioctylfluorene-2,7-diboronic acid, respectively. The polymers were characterized by 1H-NMR, FT-IR and UV-VIS spectroscopy. The thermal properties of the polymers were investigated by TGA analysis. The semi-crystalline structure of these compounds was demonstrated by X-ray diffraction study.

Design, synthesis, and herbicidal activity of novel 2-(arylamino)-5-methyl-4-methylene-7-(methylthio)-4H-pyrido[4,3-d][1,3]oxazine-8-carbonitrile derivatives

2019 ◽  
Vol 43 (3-4) ◽  
pp. 119-123
Author(s):  
Yi Sun ◽  
Wenfei Huang ◽  
Zhiqiang Li ◽  
Tao Wang ◽  
Jin Luo
Keyword(s):  
High Resolution Mass Spectrometry ◽  
Herbicidal Activity ◽  
Inhibition Rate ◽  
Target Compound ◽  
Single Crystal Diffraction ◽  
Design Synthesis ◽  
X Ray ◽  
H Nmr ◽  
Dicotyledonous Plants ◽  
C Nmr

A series of 5-methyl-4-methylene-7-methylthio-2-arylmino-4 H-pyrido[4,3- d][1,3]oxazine-8-carbonitrile derivatives were synthesized via tandem aza-Wittig and annulation reactions with { N-[3-acetyl-5-cyano-2-methyl-6-(methylthio)pyridin-4-yl]imino}triphenylphosphorane and aryl isocyanate in dry dichloromethane. Their structures were clearly confirmed by infrared, 1H NMR, 13C NMR, high-resolution mass spectrometry, and X-ray single-crystal diffraction. All newly synthesized compounds were screened for herbicidal activities against monocotyledonous and dicotyledonous plants. The results indicated that the target compound 2-[(4-methoxyphenyl)amino]-5-methyl-4-methylene-7-(methylthio)-4 H-pyrido[4,3- d][1,3]oxazine-8-carbonitrile showed 100% inhibition rate to grain sorghum (monocotyledonous) at the concentration of 100 mg L−1.

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