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The gold nanocomposite supported on hydroxypropyl cellulose (HPC) using NaBH4 as a medium has been prepared successfully here. A brownish-red solution in its UV-vis absorption spectrum showed surface plasmon resonance absorption bands between 520 and 560-nm in solutions. The Au/HPC nanocomposite was characterised by X-ray diffraction (XRD) measurement, transmission electron microscopy (TEM), scanning...
A novel alkoxysilane-functionalized push-pull chromophore was synthesized through a coupling reaction between a benzaldehyde-based chromophore, 4-aldehyde-4'-(N-ethyl-N-2-hydroxyethyl)aminoazobenzene (BA) and 3-isocyanatopropyltriethoxysilane (ICTES). Followed by a hydrolysis and condensation process of the resultant alkoxysilane dye and tetraethoxysilane (TEOS), hybrid inorganic-organic materials...
An intercalation nonlinear-optical (NLO) polyimide was synthesized by the ring-opening polyaddition of 4,4'-(Hexafluoroisopropylidene) diphthalic Anhydride (6FDA) and [(6-nitrobenzothiazol-2- yl)diazenyl]phenyl-1,3-diamine. Then, sol-gel technique was adopted, utilizing 3- aminopropyltriethoxysi- lane (APTES) and tetraethoxysilane (TEOS). The polyimide/silica hybrid material was obtained. The polyimide...
A series of the polyimide-silica NLO nanohybrid materials were synthesized from 3,3', 4,4'- Bisphenyltetracarboxylic (BPDA), 2,2-Bis(3-amino-4-hydroxyphen-yl) hexafluoropropane (6FHP), nonlinear optical (NLO) molecule 4-(N-2-Hydroxyethyl-N-methylamino)-4'-[(6-nitroben-zothiazol-2-yl)-diazenyl] azobenzene (HNBDA), coupling agent APTES and hydrolysate of TEOS via sol-gel process. The TEOS contents in...
Multi-layer buried channel waveguides were fabricated using sol-gel derived photopatternable organic-inorganic hybrid materials through multi-step spin coating and photolithography. A single mode circular waveguide at 1550 nm was designed and fabricated using core and cladding coatings with refractive indices of 1.508 and 1.504, respectively. Waveguide thermal stability and thermo-optic coefficient...
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