Max-Planck-Institute for Polymer Research, Mainz, Germany.
Opt Lett. 2012 Jul 1;37(13):2487-9. doi: 10.1364/OL.37.002487.
We report on the versatile effect of weak red laser light impinging on diblock copolymer [poly(isoprene-b-styrene)] dispersions in two selective solvents for each block. In the strongly scattering but transparent micellar solutions in hexane (a good solvent for polyisoprene), higher refractive index copolymer-rich fibers were formed. In the turbid dispersions of the same copolymer in ethyl acetate (a good solvent for polystyrene), the effect of self-induced transparency was observed. A two-step patterning mechanism caused the generation of a transparent microchannel, increasing light transmission. The analogy between the current effect and that observed in homopolymer polyisoprene solutions in different solvents is discussed toward an understanding of the unanticipated light-soft-matter interaction.
我们报告了弱红光照射嵌段共聚物[聚（异戊二烯-b-苯乙烯）]在两种选择性溶剂中分散体的多功能效应。在强烈散射但透明的胶束溶液中（对聚异戊二烯是良溶剂），形成了具有较高折射率的富共聚物纤维。在相同共聚物在乙基 acetate（聚苯乙烯的良溶剂）的混浊分散体中，观察到了自诱导透明的效应。两步图案化机制导致透明微通道的产生，从而增加了光的透过率。当前效应与在不同溶剂中观察到的均聚物聚异戊二烯溶液中的效应之间的相似性，有助于理解出人意料的光-软物质相互作用。
