Bio-organic adaptive photonic crystals enable supramolecular solvatochromism  

作　　者：Jiahao Zhang Yan Zhang Yancheng Wang Sigal Rencus-Lazar Deqing Mei Ehud Gazit Kai Tao 

机构地区：[1]State Key Laboratory of Fluid Power and Mechatronic Systems,School of Mechanical Engineering,Zhejiang University,Hangzhou 310027,China [2]Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials,Hangzhou Global Scientific and Technological Innovation Centre,Zhejiang University,Hangzhou 311200,China [3]Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province,School of Mechanical Engineering,Zhejiang University,Hangzhou 310027,China [4]The Shmunis School of Biomedicine and Cancer Research,George S.Wise Faculty of Life Sciences,Tel Aviv University,Tel Aviv 6997801,Israel [5]Department of Materials Science and Engineering,Iby and Aladar Fleischman Faculty of Engineering,Tel Aviv University,Tel Aviv 6997801,Israel

出　　处：《Nano Research》2023年第10期12092-12097,共6页纳米研究（英文版）

基　　金：the National Key Research and Development Program of China(No.2022YFE0100800);the National Natural Science Foundation of China(No.52175551)。

摘　　要：Photonic crystals(PCs)exhibit promising structural coloration properties and possess extensive application prospects in diverse optical fields.However,state-of-the-art inorganic or polymeric PCs show limited adaptivity as their configurations are fixed once formed.Herein,bio-organic adaptive PCs are fabricated via drop-casting of amphiphilic guanine-based peptide nucleic acid selfassembled microspheres.The high formation activation energy of up to 81.8 kJ·mol−1 suggests that the self-assembly step dominates the entire process.Therefore,the configurations along with the structural coloration of the supramolecular PCs are sensitive to self-assembly influencing parameters,showing temperature-encoded structural color evolution and solvent polaritydependent solvatochromism.Our findings demonstrate that the supramolecular PCs are adaptive,thus showing promising potential for detection of organic solvents of different polarities in a visual and real-time manner for environmental protection or optical applications.

关 键 词：peptide nucleic acids molecular manufacturing supramolecular photonic crystals solvatochromic effects adaptivity 

分 类 号：O63[理学—高分子化学]