scholarly journals Triazolyl Conjugated (Oligo)Phenothiazines Building Blocks for Hybrid Materials—Synthesis and Electronic Properties

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2950
Author(s):  
Hilla Khelwati ◽  
Adam W. Franz ◽  
Zhou Zhou ◽  
Werner R. Thiel ◽  
Thomas J. J. Müller
Keyword(s):  
Electronic Properties ◽  
Hybrid Materials ◽  
Radical Cations ◽  
Building Blocks ◽  
Dipolar Cycloaddition ◽  
Materials Synthesis ◽  
Reversible Redox ◽  
Structural And Electronic Properties ◽  
Mcm 41

The Cu-catalyzed alkyne-azide 1,3-dipolar cycloaddition variant provides a highly efficient entry to conjugated triazolyl-substituted (oligo)phenothiazine organosilicon derivatives with luminescence and reversible redox characteristics. Furthermore, by in-situ co-condensation synthesis several representative mesoporous MCM-41 type silica hybrid materials with embedded (oligo)phenothiazines are prepared and characterized with respect to their structural and electronic properties. The hybrid materials also can be oxidized to covalently bound embedded radical cations, which are identified by their UV/Vis absorption signature and EPR signals.

New Methacrylate-Functionalized Ba and Ba−Ti Oxoclusters as Potential Nanosized Building Blocks for Inorganic−Organic Hybrid Materials:  Synthesis and Characterization

2007 ◽  
Vol 46 (9) ◽  
pp. 3459-3466 ◽  
Author(s):  
Alberto Albinati ◽  
Francesco Faccini ◽  
Silvia Gross ◽  
Guido Kickelbick ◽  
Silvia Rizzato ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Building Blocks ◽  
Synthesis And Characterization ◽  
Materials Synthesis ◽  
Organic Hybrid

scholarly journals Synthetic Advances in the C–H Activation of Rigid Scaffold Molecules

Synthesis ◽  
2020 ◽  
Vol 52 (22) ◽  
pp. 3295-3325 ◽  
Author(s):  
Mathias O. Senge ◽  
Nitika Grover
Keyword(s):  
Electronic Properties ◽  
Functional Groups ◽  
Building Blocks ◽  
Conjugated Hydrocarbons ◽  
Current Review ◽  
Molecular Building Blocks ◽  
Structural And Electronic Properties

The remarkable structural and electronic properties of rigid non-conjugated hydrocarbons afford attractive opportunities to design molecular building blocks for both medicinal and material applications. The bridgehead positions provide the possibility to append diverse functional groups at specific angles and in specific orientations. The current review summarizes the synthetic development in CH functionalization of three rigid scaffolds namely: (a) cubane, (b) bicyclo[1.1.1]pentane (BCP), (c) adamantane.1 Introduction2 Cubane2.1 Cubane Synthesis2.2 Cubane Functionalization3 Bicyclo[1.1.1]pentane (BCP)3.1 BCP Synthesis3.2 BCP Functionalization4 Adamantane4.1 Adamantane Synthesis4.2 Adamantane Functionalization5 Conclusions and Outlook

Structural and electronic properties of covalently functionalized 2-aminoethoxy-metallophthalocyanine–graphene hybrid materials: a computational study

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85730-85740 ◽  
Author(s):  
Pabitra Narayan Samanta ◽  
Kalyan Kumar Das
Keyword(s):  
Electronic Properties ◽  
Graphene Sheet ◽  
Hybrid Materials ◽  
Computational Study ◽  
Covalent Grafting ◽  
Structural And Electronic Properties ◽  
Hybrid Complexes

A computational study has been made on graphene based hybrid complexes formed by the covalent grafting of 2-aminoethoxy-metallophthalocyanine on a graphene sheet.

scholarly journals Structural and electronic properties of oligo- and polythiophenes modified by substituents

2012 ◽  
Vol 3 ◽  
pp. 909-919 ◽  
Author(s):  
Simon P Rittmeyer ◽  
Axel Groß
Keyword(s):  
Electronic Properties ◽  
Density Functional ◽  
Electronic Devices ◽  
Density Functional Theory Calculations ◽  
Building Blocks ◽  
Band Gaps ◽  
Molecular Electronic ◽  
Functional Theory ◽  
Structural And Electronic Properties ◽  
Electronic And Structural Properties

The electronic and structural properties of oligo- and polythiophenes that can be used as building blocks for molecular electronic devices have been studied by using periodic density functional theory calculations. We have in particular focused on the effect of substituents on the electronic structure of thiophenes. Whereas singly bonded substituents, such as methyl, amino or nitro groups, change the electronic properties of thiophene monomers and dimers, they hardly influence the band gap of polythiophene. In contrast, phenyl-substituted polythiophenes as well as vinyl-bridged polythiophene derivatives exhibit drastically modified band gaps. These effects cannot be explained by simple electron removal or addition, as calculations for charged polythiophenes demonstrate.

Laboratory and in-situ analysis of comet dust

1988 ◽  
Vol 46 ◽  
pp. 8-9
Author(s):  
D.E. Brownlee ◽  
A.L. Albee
Keyword(s):  
Electron Microscopy ◽  
Solar System ◽  
Laboratory Study ◽  
Isotopic Analysis ◽  
Building Blocks ◽  
Sem Analysis ◽  
Early Solar System ◽  
Cometary Material ◽  
Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

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