The effect of molecular weight on light scattering of photonic poly styrene-block-poly-2-vinyl pyridine nano-structure

Commonly, one dimensional construct has a restriction of viewing angle. We report a new, simplistic strategy to Particle Photonic Crystal: an ellipsoidal block copolymer nanoparticles. It has a wider viewing angle and is easier to make. We made a particle of photonic crystal based on Poly Styrene-block-Poly-2-Vinyl Pyridine(PS-b-P2VP) in chloroform. After using Poly Vinyl Alcohol(PVA), it was in state of emulsion and self assembly method followed afterwards. In the first trial, we observed particle structure variation according to the difference in molecular weight such as 52k-57k, 75k-66.5k, 102k-97k. Afterwards, we exhibited how particle structure change by the addition of swelling solution (Alcohol). The molecular structure of particle photonic crystal was investigated by Transmission Electron Microscope. The color was measured by color-difference meter.

[1]  Seung‐Man Yang,et al.  Development of reflective biosensor using fabrication of functionalized photonic nanocrystals. , 2011, Journal of nanoscience and nanotechnology.

[2]  E. Thomas,et al.  Broad-wavelength-range chemically tunable block-copolymer photonic gels. , 2007, Nature materials.

[3]  S. Y. Kim,et al.  Effective Reflective Indices of Polystyrene-b-poly(2-vinyl pyridine) (PS-b-P2VP) Lamellar Films , 2010 .

[4]  Igor K Lednev,et al.  Photonic crystal carbohydrate sensors: low ionic strength sugar sensing. , 2003, Journal of the American Chemical Society.

[5]  Yan Zhang,et al.  Control of photonic band gaps in one-dimensional photonic crystals , 2011 .

[6]  Su-Young Kim,et al.  The color tuning of PS-b-P2VP lamellar films with changing the alkyl chain length of 1-iodoalkanes. , 2011, Journal of nanoscience and nanotechnology.

[7]  T. Deng,et al.  Two-dimensional block copolymer photonic crystals , 2003 .

[8]  D. Shin,et al.  Optical properties of self-assembled TiO2-SiO2 double-layered photonic crystals. , 2013, Journal of nanoscience and nanotechnology.

[9]  Bradley K. Smith,et al.  A three-dimensional photonic crystal operating at infrared wavelengths , 1998, Nature.

[10]  S. Asher,et al.  Polymerized colloidal crystal hydrogel films as intelligent chemical sensing materials , 1997, Nature.

[11]  M. Kakihana,et al.  Control of NaAlSiO 4:Eu 2+ photoluminescence properties by charge-compensated aliovalent element substitutions , 2012 .

[12]  Youngjong Kang.  Effect of Salts on the Tunability of Photonic Gels , 2008 .

[13]  Kim,et al.  Two-dimensional photonic band-Gap defect mode laser , 1999, Science.

[14]  Vladimir Saveljev.  Image and observer regions in 3d displays , 2010 .