Fabrication of Melamine/Tb^3+-Intercalated Polydiacetylene Nanosheets and Their Thermochromic Reversibility  

三聚氰胺/Tb^3+插层的聚二炔纳米片的制备及其热致变色可逆性研究

作　　者：Qing Wang Gang Wang Xia-yun Huang Dao-yong Chen 王青;王刚;黄霞芸;陈道勇(复旦大学高分子科学系,聚合物分子工程国家重点实验室,上海200438)

机构地区：[1]State Key Laboratory of Molecular Engineering of Polymers,Department of Macromolecular Science,Fudan University,Shanghai 200438,China

出　　处：《Chinese Journal of Chemical Physics》2020年第3期357-364,I0003,共9页化学物理学报（英文）

基　　金：supported by the Programs of the Shanghai Pujiang Program(No.18PJ1401500);the National Natural Science Foundation of China(No.21801046,No.51721002,No.21574025 and No.21871057);the Ministry of Science and Technology(2016YFA0203302)。

摘　　要：Polydiacetylene(PDA)is one kind of the conjugated polymer with layered structure,which can serve as a host to accommodate the guest components through intercalation.In these intercalated PDAs,some of them were reported to have a nearly perfect organized structure and perform completely reversible thermochromism.Till now,these reported intercalated PDAs were made by only introducing a single component for intercalation.Here,we chose 10,12-pentacosadiynoic acid(PCDA)as the monomer,of which the carboxyl-terminal groups can interact with either Tb^3+ ions or melamines(MAs).When the feeding molar ratio of PCDA,MA,and Tb^3+ ion was 3:267:1,only Tb^3+ ions were intercalated though excess MAs existed.Such Tb^3+- intercalated poly-PCDA exhibited completely reversible thermochromism,where almost all the carboxyl groups interacted with Tb^3+ ions to form the nearly perfect structure.When the feeding molar ratio of PCDA,MA,and Tb^3+ ion was 3:267:0.6,both Tb^3+ ions and MAs were intercalated.There existed some defects in the imperfect MA-intercalated domains and at the domain boundaries.The MA/Tb^3+- intercalated poly-PCDA exhibits partially reversible thermochromism,where the backbones near the defects are hard to return the initial conformation,while the rest,those at nearly perfect organized domains,are still able to restore the initial conformation.

关 键 词：POLYDIACETYLENE Intercalation MELAMINE Tb3+ion Reversible thermochromism 

分 类 号：TB383.1[一般工业技术—材料科学与工程]