Abstract：
Photonic heterostructures with codable properties have shown great values as versatile information carriers at the micro and nanoscale. These heterostructures are typically prepared by a step-by-step growth or post-functionalization method to achieve varied emission colors among different building blocks. In order to realize high-throughput and multivariate information loading, we report here a strategy to integrate polarization signals into photonic heterojunctions. A U-shaped di-Pt(II) complex is assembled into highly-polarized yellow-phosphorescent crystalline microrods (Y-rod) by strong intermolecular Pt···Pt interaction. Upon end-initiated desorption of the incorporated CH2Cl2 solvents, Y-rod is transformed in a domino fashion into tri-block polarized photonic heterojunctions (PPHs) with alternate red-yellow-red emissions or red-phosphorescent microrods (R-rod). The red emissions of these structures are also highly polarized; however, their polarization directions are just orthogonal to those of the yellow phosphorescence of Y-rod. With the aid of a patterned mask, R-rod is further programmed into multi-block PPHs with precisely-controlled block sizes by side-allowed adsorption of CH2Cl2 vapor. X-ray diffraction analysis and theoretical calculations suggest that the solvent-regulated modulation of intramolecular and intermolecular excited states is critical for the construction of these PPHs.
摘要：
具有可编码特性的光子异质结构作为微型和纳米级的通用信息载体已显示出巨大的价值。这些异质结构通常通过逐步生长或后官能化方法来制备,以实现不同结构单元之间的不同发射颜色。为了实现高通量、多变量信息加载,我们在这里报告了一种将极化信号集成到光子异质结中的策略。通过强的分子间Pt····Pt相互作用，将U形di-Pt（II）配合物组装成高度极化的黄色磷光晶体微棒（Y棒）。在最终引发引入的CH2Cl2溶剂的解吸后，Y棒以多米诺方式转化为具有交替的红-黄-红发射或红色磷光微棒（R棒）的三块极化光子异质结（PPH）。这些结构的红色发射也是高度极化的；然而，它们的偏振方向与Y棒的黄色磷光方向正交。借助图案化的掩模，通过侧向允许的CH2Cl2蒸气吸附，将R-rod进一步编程为具有精确控制的嵌段尺寸的多嵌段PPH。X射线衍射分析和理论计算表明，分子内和分子间激发态的溶剂调节调制对于这些PPH的构建至关重要。
