scholarly journals Living Polymerization of Propylene with ansa-Dimethylsilylene(fluorenyl)(cumylamido) Titanium Complexes

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 131 ◽  
Author(s):  
Huajin Wang ◽  
Xinwei Wang ◽  
Yanjie Sun ◽  
Hailong Cheng ◽  
Takeshi Shiono ◽  
...  
Keyword(s):  
Living Polymerization ◽  
Titanium Complexes

Living syndiospecific polymerization of propylene with sterically encumbered titanium complexes activated by MMAO

2014 ◽  
Vol 5 (22) ◽  
pp. 6510-6522 ◽  
Author(s):  
Ying-Yun Long ◽  
Yong-Xia Wang ◽  
Bai-Xiang Li ◽  
Yan-Guo Li ◽  
Yue-Sheng Li
Keyword(s):  
Molecular Weight ◽  
Living Polymerization ◽  
Bulky Substituent ◽  
Titanium Complexes ◽  
Titanium Complex ◽  
Molecular Weights ◽  
Molecular Weight Distributions ◽  
Weight Distributions

On activation with MMAO, the newly designed titanium complex with bulky substituent promotes living polymerization of propylene, affording highly syndiotactic (rrrr 98.0%) polymers with high molecular weights and narrow molecular weight distributions (Mw/Mn ≤ 1.26).

Aminopyridinate-FI Hybrids, Their Hafnium and Titanium Complexes, and Their Application in the Living Polymerization of 1-Hexene

2013 ◽  
Vol 19 (42) ◽  
pp. 14254-14262 ◽  
Author(s):  
Isabelle Haas ◽  
Thomas Dietel ◽  
Konstantin Press ◽  
Moshe Kol ◽  
Rhett Kempe
Keyword(s):  
Living Polymerization ◽  
Titanium Complexes

Living Polymerization of Ethylene Catalyzed by Titanium Complexes Having Fluorine-Containing Phenoxy−Imine Chelate Ligands

2002 ◽  
Vol 124 (13) ◽  
pp. 3327-3336 ◽  
Author(s):  
Makoto Mitani ◽  
Jun-ichi Mohri ◽  
Yasunori Yoshida ◽  
Junji Saito ◽  
Seiichi Ishii ◽  
...  
Keyword(s):  
Living Polymerization ◽  
Titanium Complexes ◽  
Chelate Ligands

Synthesis, Spectral Characterization, Antibacterial and Anticancer Activity of some Titanium Complexes

2018 ◽  
Vol 18 (5) ◽  
pp. 739-746 ◽  
Author(s):  
Raj Kaushal ◽  
Nitesh Kumar ◽  
Archana Thakur ◽  
Kiran Nehra ◽  
Pamita Awasthi ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Death ◽  
Anticancer Activity ◽  
Cell Lines ◽  
Spectral Characterization ◽  
Mechanistic Study ◽  
Titanium Complexes ◽  
G0 Phase ◽  
Antibacterial And Anticancer Activity ◽  
Dose Dependent

Abstract: Background: After the discovery of cisplatin, first non platinum anticancer drugs having excellent efficacy were budotitane and TiCl2(cp)2 but action mechanism is not clear. Therefore, we hereby reporting synthesis and biological activities novel titanium complexes to explore their mode of action. Objectives: Synthesis, spectral characterization, antibacterial and anticancer activity of some titanium complexes. Antibacterial studies on various bacterial strains and anticancer studies on HeLa, C6, CHO cancerous cell lines have been performed. Further, the cell death mechanistic study was done on CHO cell lines. Method: Titanium complexes with and without labile groups have been synthesized by reacting of TiCl4 with nitrogen containing ligands viz. 1,2-diaminocyclohexane, 1,10-Phenanthroline, adamantylamine, 2,2'-bipyridine, 4,4'-dimethyl-2,2'-bipyridine in predetermined molar ratios. Antibacterial and anticancer studies were performed by agar well diffusion method and MTT assay respectively. Cell cycle analysis is done by using flow cytometry. Results: Complex 2 i.e TiCl2(Phen)2 showed better activity than other complexes as an antibacterial as well as anticancer agent. Phase contrast imaging indicates that observed morphological changes of cells was dose dependent. Cell death mechanistic study have shown the increase in sub G0 phase population as well as formation of blebbing and fragmentation of chromatin material which is an indicative measure of apoptosis. Conclusion: Complex 2 proved to be more effective bactericide and cytotoxic agent. Cell cycle analysis showed cell arrest in G0 phase. Apoptosis percentage was found to increase in a dose dependent manner. So, prepared titanium complexes can be put to use as an important chemotherapeutic agents.

scholarly journals Titanium Complexes with Functional Alkoxido Ligands for Selective Ethylene Dimerization – A High Throughput Experimentation Approach

ChemCatChem ◽  
2021 ◽  
Author(s):  
Fabien L. Grasset ◽  
Richard Welter ◽  
Pierre Braunstein ◽  
Hélène Olivier‐Bourbigou ◽  
Lionel Magna
Keyword(s):  
High Throughput ◽  
Titanium Complexes ◽  
Ethylene Dimerization ◽  
High Throughput Experimentation

Controlled and Efficient Polymerization of Methyl Methacrylate Catalyzed by Pyridinylidenaminophosphines Based Lewis Pairs

2021 ◽  
Author(s):  
Fang Ge ◽  
Sun Li ◽  
Zhe Wang ◽  
Wenzhong Zhang ◽  
Xiaowu Wang
Keyword(s):  
Molecular Weight ◽  
Methyl Methacrylate ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Living Polymerization ◽  
Narrow Molecular Weight Distribution ◽  
Synthetic Approaches ◽  
Lewis Pairs

Developing different synthetic approaches to realize controlled or living polymerization are aspirational to achieve polymers with defined molecular weight, narrow molecular weight distribution and unambiguous structures by polymer chemists. Herein,...

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