Synthesis and characterization of metallo-supramolecular polymers

2016 ◽  
Vol 45 (19) ◽  
pp. 5311-5357 ◽  
Author(s):  
Andreas Winter ◽  
Ulrich S. Schubert

The basic concepts and synthetic strategies leading to metallo-supramolecular polymers as well as the scope and limitation in characterizing such materials are discussed in this review.

RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 10718-10728 ◽  
Author(s):  
Sviatoslav Hladysh ◽  
Daniela Václavková ◽  
David Vrbata ◽  
Dmitrij Bondarev ◽  
David Havlíček ◽  
...  

A series of novel metallo-supramolecular polymers was prepared, based on 2,6-bis(2-oxazolinyl)pyridine chelating groups bridged with thiophene, bithiophene and thienothiophene as a linker, beginning from commercially available (chelidamic) acid.


2014 ◽  
Vol 10 ◽  
pp. 2874-2885 ◽  
Author(s):  
Florian Hamon ◽  
Claire Blaszkiewicz ◽  
Marie Buchotte ◽  
Estelle Banaszak-Léonard ◽  
Hervé Bricout ◽  
...  

This paper reports an efficient preparation of bridged bis-β-CD AZO-CDim 1 bearing azobenzene as a linker and exhibiting high solubility in water. The photoisomerization properties were studied by UV–vis and HPLC and supported by ab initio calculations. The cis/trans ratio of AZO-CDim 1 is 7:93 without irradiation and 37:63 after 120 min of irradiation at 365 nm; the reaction is reversible after irradiation at 254 nm. The photoinduced, switchable binding behavior of AZO-CDim 1 was evaluated by ITC, NMR and molecular modeling in the presence of a ditopic adamantyl guest. The results indicate that AZO-CDim 1 can form two different inclusion complexes with an adamantyl dimer depending on its photoinduced isomers. Both cavities of cis-AZO-CDim 1 are complexed simultaneously by two adamantyl units of the guest forming a 1:1 complex while trans-AZO-CDim 1 seems to lead to the formation of supramolecular polymers with an n:n stoichiometry.


1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.


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