Optical properties of push-pull azo groups covalently bonded to a silica-gel matrix

1994 ◽  
Author(s):  
Frederic Chaput ◽  
Jean-Pierre Boilot ◽  
Didier Riehl ◽  
Yves Levy
Keyword(s):  
Optical Properties ◽  
Silica Gel ◽  
Covalently Bonded

scholarly journals Triazolinedione bearing gels

2020 ◽  
Author(s):  
Saltuk Hanay
Keyword(s):  
Silica Gel ◽  
Hybrid Materials ◽  
Hexamethylene Diisocyanate ◽  
General Strategy ◽  
Novel Materials ◽  
Ionic Bonding ◽  
Covalently Bonded

Triazolinediones (TADs) have been extensively used for the modification and crosslinking of polymers. However, there have not been any report on TAD bearing gels so far except an inorganic silica gel on which TAD is immobilized via ionic bonding. Here, I report a simple, scalable and general strategy to synthesize gels that contains covalently bonded TAD groups, starting from commercially available poly(hexamethylene diisocyanate). The covalently bonded TAD-gel platform could find many different applications such as the fabrication of hybrid materials, chemo-sensing, and scavenging excess reagents. In this work, potential scavenging application for TAD-gels were demonstrated with three different compound furan, aniline and limonene. Moreover, 1naphthol was selectively and completely removed from its mixture with 2-naphthol. The strategy developed here enables the preparation of poly(urea) and poly(ureathane) based novel materials via ultrafast modification at TAD moieties.

scholarly journals Comparison of Optical Properties of Eu3+Ions in the Silica Gel Glasses Obtained by Different Preparation Techniques

1996 ◽  
Vol 90 (2) ◽  
pp. 461-468 ◽  
Author(s):  
J. Legendziewicz ◽  
W. Stręk ◽  
J. Sokolnicki ◽  
B. Keller ◽  
M. Borzechowska
Keyword(s):  
Optical Properties ◽  
Silica Gel ◽  
Gel Glasses ◽  
Preparation Techniques

scholarly journals Triazolinedione bearing gels

2020 ◽  
Author(s):  
Saltuk Hanay
Keyword(s):  
Silica Gel ◽  
Hybrid Materials ◽  
Hexamethylene Diisocyanate ◽  
General Strategy ◽  
Novel Materials ◽  
Ionic Bonding ◽  
Covalently Bonded

Triazolinediones (TADs) have been extensively used for the modification and crosslinking of polymers. However, there have not been any report on TAD bearing gels so far except an inorganic silica gel on which TAD is immobilized via ionic bonding. Here, I report a simple, scalable and general strategy to synthesize gels that contains covalently bonded TAD groups, starting from commercially available poly(hexamethylene diisocyanate). The covalently bonded TAD-gel platform could find many different applications such as the fabrication of hybrid materials, chemo-sensing, and scavenging excess reagents. In this work, potential scavenging application for TAD-gels were demonstrated with three different compound furan, aniline and limonene. Moreover, 1naphthol was selectively and completely removed from its mixture with 2-naphthol. The strategy developed here enables the preparation of poly(urea) and poly(ureathane) based novel materials via ultrafast modification at TAD moieties.

Optical properties of Co2+-doped silica gel monoliths

1994 ◽  
Vol 176 (2-3) ◽  
pp. 172-178 ◽  
Author(s):  
A Boos ◽  
G Pourroy ◽  
J.L Rehspringer ◽  
J.L Guille
Keyword(s):  
Optical Properties ◽  
Silica Gel ◽  
Silica Gel Monoliths
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