阅读说明：本技术 聚合物、组合物、电致变色元件、调光装置和显示装置 (Polymer, composition, electrochromic element, light control device, and display device ) 是由 樋口昌芳 马纳斯·库马尔·贝拉 于 2019-08-15 设计创作，主要内容包括：本发明解决了提供具有电致变色特性并且能够形成在应用于电致变色元件并且脱色时看上去更透明的片材的聚合物的第一问题。解决该问题的本发明是通过以下方式得到的聚合物：在式1：BP_1-L_1-BP_2表示的化合物A与选自由配位数为4的第一金属离子、配位数为6的第二金属离子以及配位数为4和6的第三金属离子组成的组中的至少一种特定金属离子之间形成配合物,并且将配合物键合到一起。在该式中,L_1表示单键或二价基团,BP_1和BP_2可以彼此相同或不同,并且各自独立地表示联吡啶衍生物。(The present invention solves a first problem of providing a polymer having electrochromic properties and capable of forming a sheet that looks more transparent when applied to an electrochromic element and discolored. The present invention for solving the problem is a polymer obtained by: in formula 1: BP (Back propagation) of 1 ‑L 1 ‑BP 2 The compound a represented forms a complex with at least one specific metal ion selected from the group consisting of a first metal ion having a coordination number of 4, a second metal ion having a coordination number of 6, and a third metal ion having coordination numbers of 4 and 6, and bonds the complexes together. In the formula, L 1 Represents a single bond or a divalent group, BP 1 And BP 2 May be the same as or different from each other, and each independently represents a bipyridine derivative.)