Fabrication Of Titania/Graphene Oxide One-Dimensional Photonic Crystals And Research Of Theirs Applications

Photonic crystal, which has vast potential for future development in the sensor and detection filed, is a new type of structure material. In the past, most of the responsive photonic crystals are based on three-dimensional opol or inverse opal struetures which are difficult to prepare in large area. Furthermore, the colours of finished products are not uniform. One-dimensional photonic crystal (1DPC) is a type of photonic crystal, which is composed of regularly repeating and periodic structures of high and low dielectric constant in one direction.1DPC not only has all kinds of the properties of photonic crystals, but also has a simple preparing proeess and low cost. Herein, we focused on the goal, which is fabrication of 1DPCs that have vast potential for future development in the sensor and detection filed, and attempted the works on fabrication of 1DPCs and theirs applications. The detail works are as follow:(1) TiO2/GO1DPCs were sueeessfully fabricated with spin-coating technique. The facts that effect on the fabrication of 1DPCs were explored and optimized. Under the optimized conditions, a series of high-quality TiO2/GO lDPCs, whose stopbands could be made to span the whole visible range, were fabricated. This work proposed a new structure system of 1DPCs.(2) Different stimuli-responsive hydrogels were introduced into 1DPCs’structure units, and TiO2/hydrogel/GO 1DPCs, which inculed TiO2/PEG-PMVE-MA/GO 1DPCs and TiO2/PEG-PMVE-MA-β-CD/GO1DPCs, were sueeessfully fabricated with spin-coating technique. These 1DPCs expanded the scope of detection, improved the detection sensitivity, and achieved the duplicate detections. These works demonstrated the practical application capability of our TiO2/GO 1DPCs.(3) 1DPCs/nanoscaled ZnO particles composite thin films were fabricated with spin-coating technique. The fluorescence of the organic dyes deposited on 1DPCs/ nanoscaled ZnO composite thin films was obviously enhanced in comparison with that on 1DPCs films and ZnO films. Otherwise, the nanoscaled ZnO particles were modified with polymer by self-assembly, and we found a novel phenomenon was observed that the thickness of polymer had relationship with the effect of fluorescence enhancement. This work would expand the ability and the application scope of the TiO2/GO1DPCs.