Department of Chemistry, McGill University, Montreal, Quebec H3A 2K6, Canada.
Phys Chem Chem Phys. 2013 Dec 14;15(46):19985-9. doi: 10.1039/c3cp52873a.
We have developed polyelectrolyte multilayer bio-films containing azobenzene chromophores that enhance reversible photo-orientation upon irradiation with linearly polarized light, to effect surface photo-switching of adjacent biological systems. When conditions of film preparation and irradiation were optimized, we could observe the highest measured birefringence to date in amorphous systems (Δn > 0.2). This birefringence change to probe orientation was also for the first time measured and determined to be stable completely underwater, permitting optimization for in situ applications immersed in biological conditions.
我们已经开发出含有偶氮苯发色团的聚电解质多层生物膜，这些生物膜在经过线性偏振光照射后会增强可逆光取向，从而实现相邻生物系统的表面光切换。当优化了薄膜制备和辐照条件时，我们可以观察到非晶态系统中迄今为止最高的测量双折射（Δn>0.2）。这种用于探测取向的双折射变化也是首次被测量和确定完全可以在水下稳定存在，从而允许在浸入生物条件的原位应用中进行优化。
