Influence of electronic vs. steric factors on the solid-state photochromic performances of new polyoxometalate/spirooxazine and spiropyran hybrid materials

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79635-79643 ◽  
Author(s):  
Clotilde Menet ◽  
Hélène Serier-Brault ◽  
Olivier Oms ◽  
Anne Dolbecq ◽  
Jérôme Marrot ◽  
...  
Keyword(s):  
Solid State ◽  
Hybrid Materials ◽  
Electronic Effect ◽  
Steric Factors

New supramolecular spirooxazine and spiropyran/polyoxotungstate materials have been designed. Their solid-state photochromic performances are strongly exalted compared to their isostructural Mo counterparts due to a more favorable electronic effect.

scholarly journals Oligosilanylated Silocanes

Molecules ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 244
Author(s):  
Mohammad Aghazadeh Meshgi ◽  
Alexander Pöcheim ◽  
Judith Baumgartner ◽  
Viatcheslav V. Jouikov ◽  
Christoph Marschner
Keyword(s):  
Cyclic Voltammetry ◽  
Solid State ◽  
Xrd Analysis ◽  
29Si Nmr ◽  
Single Crystal Xrd ◽  
Substitution Pattern ◽  
Silyl Group ◽  
Steric Factors ◽  
Single Crystal Xrd Analysis ◽  
29Si Nmr Spectroscopy

A number of mono- and dioligosilanylated silocanes were prepared. Compounds included silocanes with 1-methyl-1-tris(trimethylsilyl)silyl, 1,1-bis[tris(trimethylsilyl)silyl], and 1,1-bis[tris(trimethylsilyl)germyl] substitution pattern as well as two examples where the silocane silicon atom is part of a cyclosilane or oxacyclosilane ring. The mono-tris(trimethylsilyl)silylated compound could be converted to the respective silocanylbis(trimethylsilyl)silanides by reaction with KOtBu and in similar reactions the cyclosilanes were transformed to oligosilane-1,3-diides. However, the reaction of the 1,1-bis[tris(trimethylsilyl)silylated] silocane with two equivalents of KOtBu leads to the replacement of one tris(trimethylsilyl)silyl unit with a tert-butoxy substituent followed by silanide formation via KOtBu attack at one of the SiMe3 units of remaining tris(trimethylsilyl)silyl group. For none of the silylated silocanes, signs of hypercoordinative interaction between the nitrogen and silicon silocane atoms were detected either in the solid state. by single crystal XRD analysis, nor in solution by 29Si-NMR spectroscopy. This was further confirmed by cyclic voltammetry and a DFT study, which demonstrated that the N-Si distance in silocanes is not only dependent on the energy of a potential N-Si interaction, but also on steric factors and through-space interactions of the neighboring groups at Si and N, imposing the orientation of the pz(N) orbital relative to the N-Si-X axis.

scholarly journals Flying MOFs: polyamine-containing fluidized MOF/SiO2 hybrid materials for CO2 capture from post-combustion flue gas

2018 ◽  
Vol 9 (20) ◽  
pp. 4589-4599 ◽  
Author(s):  
Ignacio Luz ◽  
Mustapha Soukri ◽  
Marty Lail
Keyword(s):  
Solid State ◽  
Mesoporous Silica ◽  
Fluidized Bed ◽  
Hybrid Materials ◽  
Flue Gas ◽  
Metal Organic Framework ◽  
Fluidized Bed Reactor ◽  
Large Collection ◽  
Solid Sorbents ◽  
Metal Organic

Solid-state synthesis ensures a high loading and well dispersed growth of a large collection of metal–organic framework (MOF) nanostructures within a series of commercially available mesoporous silica allowing to render MOFs into fluidized solid sorbents for CO2 capture from post-combustion flue gas in a fluidized-bed reactor.

Synthesis and solid state NMR characterization of novel peptide/silica hybrid materials

2015 ◽  
Vol 72 ◽  
pp. 73-78 ◽  
Author(s):  
Mayke Werner ◽  
Andreas Heil ◽  
Niels Rothermel ◽  
Hergen Breitzke ◽  
Pedro Braga Groszewicz ◽  
...  
Keyword(s):  
Solid State ◽  
Hybrid Materials ◽  
Solid State Nmr ◽  
Nmr Characterization ◽  
Silica Hybrid

Solid-state lasers based on inorganic–organic hybrid materials obtained by combined sol–gel polymer technology

2004 ◽  
Vol 15 (6) ◽  
pp. 291-301 ◽  
Author(s):  
R. Reisfeld ◽  
A. Weiss ◽  
T. Saraidarov ◽  
E. Yariv ◽  
A. A. Ishchenko
Keyword(s):  
Solid State ◽  
Hybrid Materials ◽  
Sol Gel ◽  
Solid State Lasers ◽  
Organic Hybrid

scholarly journals Application of hybrid materials in solid-state electrochromic devices

2009 ◽  
Vol 31 (10) ◽  
pp. 1467-1471 ◽  
Author(s):  
L.C. Rodrigues ◽  
P.C. Barbosa ◽  
M.M. Silva ◽  
M.J. Smith ◽  
A. Gonçalves ◽  
...  
Keyword(s):  
Solid State ◽  
Hybrid Materials ◽  
Electrochromic Devices

Structure, Mobility, and Interface Characterization of Self-Organized Organic−Inorganic Hybrid Materials by Solid-State NMR

1999 ◽  
Vol 121 (24) ◽  
pp. 5727-5736 ◽  
Author(s):  
Susan M. De Paul ◽  
Josef W. Zwanziger ◽  
Ralph Ulrich ◽  
Ulrich Wiesner ◽  
Hans W. Spiess
Keyword(s):  
Solid State ◽  
Hybrid Materials ◽  
Solid State Nmr ◽  
Inorganic Hybrid ◽  
Interface Characterization ◽  
Self Organized

Hybrid Materials Based on Polyoxometalates with Solid State Properties

2003 ◽  
pp. 417-440
Author(s):  
M. Clemente-Leon ◽  
E. Coronado ◽  
C. Giménez-Saiz ◽  
C.J. Gómez-Garca
Keyword(s):  
Solid State ◽  
Hybrid Materials
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