Yang Dongpeng, Liao Guolong, Huang Shaoming
School of Materials and Energy , Guangdong University of Technology , Guangzhou 510006 , P. R. China.
Zhejiang Key Laboratory of Carbon Materials , Wenzhou University , Wenzhou 325027 , P. R. China.
Langmuir. 2019 Jun 25;35(25):8428-8435. doi: 10.1021/acs.langmuir.9b01571. Epub 2019 Jun 14.
YOHCO colloidal particles with tunable size, composition, and optical properties were prepared, and they were used for the fabrication of amorphous photonic crystals? (APCs) patterns through direct hand painting. YOHCO colloids were synthesized by a seeding growth method, in which the colloid size could be controlled by altering the seed amounts and the composition and optical properties can be altered via the doping of Eu. APCs? films with bright, permanent, and tunable structural colors were prepared by the self-assembly of YOHCO colloids of different sizes. Multicolor patterns can be obtained quickly and efficiently by hand painting with the dispersion of YOHCO colloids as ink. An APCs? pattern assembled from YOHCO:Eu colloids is also fabricated, and the pattern shows blue structural color under natural light and bright red colors under illumination of UV light. The facile synthesis procedure, simple assembly process, and unique optical properties of the APCs make it valuable for practical applications such as structural color-based printing and anticounterfeiting.
制备了具有可调尺寸、组成和光学性质的YOHCO胶体颗粒，并通过直接手绘将其用于制备非晶光子晶体（APC）图案。YOHCO胶体通过种子生长法合成，其中胶体尺寸可通过改变种子量来控制，组成和光学性质可通过Eu掺杂来改变。通过不同尺寸的YOHCO胶体的自组装制备了具有明亮、持久和可调结构颜色的APC薄膜。用YOHCO胶体分散液作为墨水进行手绘，可以快速有效地获得多色图案。还制备了由YOHCO:Eu胶体组装的APC图案，该图案在自然光下呈现蓝色结构颜色，在紫外光照射下呈现亮红色。APC简便的合成过程、简单的组装工艺和独特的光学性质使其在基于结构颜色的印刷和防伪等实际应用中具有价值。
