Controllable Synthesis of Hybrid Dendrimers Composed of a Carbosilane Core and an Aromatic Shell: Does Size Matter?

Controllable Synthesis of Hybrid Dendrimers Composed of a Carbosilane Core and an Aromatic Shell: Does Size Matter?

The controllable synthesis of novel hybrid dendrimers composed of flexible and rigid components was accomplished via effective Cu-catalyzed azide-alkyne cycloaddition ("click") reaction between azide-functionalized carbosilane cores of two generations and monoethynyl-substituted hexaphenyl...

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Bibliographic Details
Published in:International journal of molecular sciences Vol. 23; no. 24; p. 15461
Main Authors: Ardabevskaia, Sofia N, Chamkina, Elena S, Krasnova, Irina Yu, Milenin, Sergey A, Sukhova, Ekaterina A, Boldyrev, Konstantin L, Bakirov, Artem V, Serenko, Olga A, Shifrina, Zinaida B, Muzafarov, Aziz M
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 07-12-2022
MDPI
Subjects:
Alkynes
Alkynes - chemistry
Azides - chemistry
Controllability
Cooling
core/shell macromolecules
Crystallization
Cycloaddition
Decomposition
Dendrimers
Dendrimers - chemistry
hybrid dendrimers
ordered structures
Silanes - chemistry
Spectrum analysis
Temperature
“click” reactions
hybrid dendrimers
ordered structures
core/shell macromolecules
“click” reactions
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Summary:The controllable synthesis of novel hybrid dendrimers composed of flexible and rigid components was accomplished via effective Cu-catalyzed azide-alkyne cycloaddition ("click") reaction between azide-functionalized carbosilane cores of two generations and monoethynyl-substituted hexaphenylbenzene dendron. A comprehensive analysis of the thermal and phase behavior of dendrimers allows us to detect a similar performance of dendrimers of both generations which, in our opinion, can be due to the similar ratio of rigid and flexible blocks in the dendrimers regardless the generation of carbosilane cores. The propensity to crystallization and ordering after the annealing procedure was confirmed by DSC and SWAXS. We found that hybrid dendrimers have a tendency to order depending on their constituents of different structures. This is in contrast to homogeneous dendrimers whose propensity to order is determined by the dendrimer molecule as a whole.
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ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms232415461