Polymeric optical amplifiers

Poly (PDBF) s synthesized by helix-sense-selective polymerization using FlLi-Sp and FlLi-DDB complexes did not show detectable CD or optical activity in solution. However, a thin film made by drop-casting the solution onto a quartz plate indicated intense CD absorptions. The spectra of the polymers synthesized with (+)- and (-)-DDB were almost mirror images. The CD spectra are not due to film anisotropy but to conformational chirality of polymer chains. Because the polymers showing clear CD bands in film did not show chiroptical properties in solution, molecular aggregation may amplify and stabilize the single-handed helical conformation induced... 

Years earlier, Staudinger and Hutchinson employed a homo-IPN of acrylic composition to make optically smooth surfaces. As amplified in Chapter 1, network I was swollen with more monomer of the same type to smooth out surface wrinkles by the stretching incurred on swelling. Polymerization of the new monomer yielded a homo-IPN. 

Holthausen D, Vasani RB, Mclnnes SJP, Ellis AV, Voelcker NH (2012) Polymerization-amplified optical DNA detection on porous silicon templates. ACS Macro Lett 1 919 Jarvis KL, Barnes TJ, Prestidge CA (2012) Surface chemistry of porous silicon and implications for dmg encapsulation and delivery applications. Adv Colloid Interface Sci 175 25 Jin J-H, Hong SI, Min NBC (2009) Integrated urea sensor module based on poly(3-methylthiophene)-modified p-t3 )e porous silicon substrate. J Porous Mater 16 379 Kashanian S, Harding F, Irani Y, ICIebe S, Marshall K, Loni A, Canham L, Fan D, Williams KA, Voelcker NH, Coffer JL (2010) Evaluation of mesoporous silicon/polycaprolactone composites as ophthalmic implants. Acta Biomater 6 3566... 

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