Hydrolytic polycondensation of sodiumoxymethyl(dialkoxy)silanes as a method for producing linear poly[(sodiumoxy)methylsilsesquioxane]

2009 ◽  
Vol 51 (11-12) ◽  
pp. 457-464 ◽  
Author(s):  
M. A. Obrezkova ◽  
N. G. Vasilenko ◽  
V. D. Myakushev ◽  
A. M. Muzafarov
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chaojian Chen ◽  
Manjesh Kumar Singh ◽  
Katrin Wunderlich ◽  
Sean Harvey ◽  
Colette J. Whitfield ◽  
...  

AbstractThe creation of synthetic polymer nanoobjects with well-defined hierarchical structures is important for a wide range of applications such as nanomaterial synthesis, catalysis, and therapeutics. Inspired by the programmability and precise three-dimensional architectures of biomolecules, here we demonstrate the strategy of fabricating controlled hierarchical structures through self-assembly of folded synthetic polymers. Linear poly(2-hydroxyethyl methacrylate) of different lengths are folded into cyclic polymers and their self-assembly into hierarchical structures is elucidated by various experimental techniques and molecular dynamics simulations. Based on their structural similarity, macrocyclic brush polymers with amphiphilic block side chains are synthesized, which can self-assemble into wormlike and higher-ordered structures. Our work points out the vital role of polymer folding in macromolecular self-assembly and establishes a versatile approach for constructing biomimetic hierarchical assemblies.


RSC Advances ◽  
2021 ◽  
Vol 11 (23) ◽  
pp. 14093-14102
Author(s):  
Hans R. Kricheldorf ◽  
Steffen M. Weidner ◽  
Andreas Meyer

By variation of reaction conditions and catalysts a cyclic tin(ii) compound was found, which enables synthesis of high melting (>190 °C) poly(l-lactide) via ROP of l-lactide, whereas the technically used catalyst SnOct2 does not show such a performance.


2021 ◽  
Author(s):  
Nan Zheng ◽  
Xiahui Li ◽  
Shangwei Huangfu ◽  
Kangkai Xia ◽  
Ruofei Yue ◽  
...  

A linear poly-porphyrin with high Mw and conjugated by PEG and acetazolamide was developed with enhanced singlet oxygen quantum yield, improved photo-toxicity and excellent in vivo photodynamic therapy.


2014 ◽  
Vol 15 (4) ◽  
pp. 1124-1131 ◽  
Author(s):  
Christoph Englert ◽  
Lutz Tauhardt ◽  
Matthias Hartlieb ◽  
Kristian Kempe ◽  
Michael Gottschaldt ◽  
...  

2021 ◽  
Vol 52 ◽  
pp. 101702
Author(s):  
Nanhua Wu ◽  
Yifeng Zou ◽  
Rong Xu ◽  
Jing Zhong ◽  
Jing Li

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