2021
DOI: 10.1002/ange.202014932
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Conjugated Copolymers That Shouldn't Be

Abstract: Multiple studies have explored using cage silsesquioxanes (SQs) as backbone elements in hybrid polymers motivated by their well-defined structures and physical and mechanical properties. As part of this general exploration, we report unexpected photophysical properties of copolymers derived from divinyl double decker (DD) SQs, [vinyl(Me)Si-(O 0.5 ) 2 ][PhSiO 1.5 ] 8 [(O 0.5 ) 2 Si(Me)vinyl] (vinylDDvinyl). These copolymers exhibit strong emission red-shifts relative to model compounds, implying unconventional … Show more

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Cited by 4 publications
(5 citation statements)
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“…The degree of polymerization (DP n ) of 6a-(d-g) after 24 h was estimated as 5-7 units which seemed to be the expected result for these kinds of DDSQ-based linear systems. 20,28,31,35,45 The additional reaction time (72 h) lead to a minor increase in molecular weights of the obtained copolymers and their Đ values. Based on the analysis of molecular weight distribution plots the low molecular fractions were converted to higher molecular weight products, e.g.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The degree of polymerization (DP n ) of 6a-(d-g) after 24 h was estimated as 5-7 units which seemed to be the expected result for these kinds of DDSQ-based linear systems. 20,28,31,35,45 The additional reaction time (72 h) lead to a minor increase in molecular weights of the obtained copolymers and their Đ values. Based on the analysis of molecular weight distribution plots the low molecular fractions were converted to higher molecular weight products, e.g.…”
Section: Resultsmentioning
confidence: 99%
“…They are involved in hydrosilylation (HS), cross-metathesis silylative or Heck coupling, dehydrocoupling condensation, O-silylation (metallation), and Friedel-Crafts reactions. [14][15][16][17][18][19][20][21] These reactions lead to novel functionalized molecular and macromolecular silsesquioxanebased systems. While new catalytic methodologies have been developed, hydrosilylation is still one the most important syn-thetic methods of fundamental importance in organosilicon chemistry and also SQ functionalization, mediated by easily available Pt-based Karstedt or Speier catalysts.…”
Section: Introductionmentioning
confidence: 99%
“…Double-decker silsesquioxanes have shown excellent potential for various applications, including such intriguing areas as materials engineering, smart and self-healing polymers, coordination chemistry, catalysis, and others. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] The structure of a typical double-decker silsesquioxane is different from that of the symmetric cubic T 8 polyhedral oligomeric silsesquioxanes (POSSs). It constitutes an open cage network including two connected, via oxygen bridges, decks of cyclosiloxane rings located on top of one another with eight phenyl groups attached to Si atoms (Fig.…”
Section: Introductionmentioning
confidence: 99%
“…The amount of reports of photophysical properties of DDSQs is still restricted to selected derivatives (e.g., vinyl- or styryl-). 69 − 71 …”
Section: Results and Discussionmentioning
confidence: 99%