The synthesis and characterization of calix[4]arene based azo dyes
โ Scribed by Shobhana K. Menon; Ravindra V. Patel; Jayesh G. Panchal
- Publisher
- Springer Netherlands
- Year
- 2009
- Tongue
- English
- Weight
- 267 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0923-0750
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## Abstract **Summary:** A new calix[4]areneโbased periodic mesoporous organosilica has been synthesized using tetraethoxysilane (TEOS) and a calix[4]areneโbased silane monomer as the precursors and cetyltrimethylammonium bromide (CTAB) surfactant as the structureโdirecting template, and is shown t
The newly synthesized uracil based calixl4]arenes (4) possess anticonfiguration (IH nmr and energy minimization), where the substituents (R0 on aryl ring between N~-positions of uracil face the n-cloud of the ring between N3-positions.