光致变色无限配位聚合物的构建及其氨气探针应用
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- 英文论文题名：The Construction of Dithienylethene-based Infinite Coordination Polymers And Their Gaseous Ammonia Probe Applications
- 论文作者：李焱恺 ; 张隽佶 ; 胡军 ; 刘洪来
- 英文论文作者：Yankai Li ; J.Zhang ; J.Hu ; H.Liu ; Department of Chemistry ; East China University of Science and Technology
- 年：2016
- 作者机构：华东理工大学化学与分子工程学院;
- 论文关键词：光致变色 ; 无限配位聚合物 ; 氨气探针
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十七分会：光化学
- 语种：中文
- 分类号：O641.4;O657.3
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十七分会 ; 光化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：213k
- 原文格式：D
- 会议级别：全国
摘要
无限配位聚合物(ICPs)是由有机配体和金属离子单元通过配位键重复连接而成的。配体多样性使ICPs易于功能化,再加上其多孔性质,使该材料具有广阔的应用。本文中,我们将具有光致变色性能的二噻吩乙烯(DTE)分子作为配体嵌入至ICPs的骨架,得到智能的材料Cu-DTEDBA。Cu-DTEDBA结合了DTE分子和ICPs骨架两者的优点。即,Cu-DTEDBA能在不同波长的光的照射下,发生原位闭环或开环的反应,导致其颜色和吸收光谱的相应变化;同时,Cu-DTEDBA又保留了ICPs材料的稳定性和多孔性质。此外,两者的结合还促进了DTE小分子和ICPs的协同作用。我们发现,Cu-DTEDBA可以作为氨气的变色探针,无论是开环体Cu-DTEDBA(o)还是闭环体Cu-DTEDBA(c)在接触氨气后,都发生相应的颜色变化,而二噻吩乙烯配体接触氨气没有该现象产生。红外光谱证明,Cu-DTEDBA材料中,Cu2+的存在使材料有了氨气作用活性位,且其多孔性质又大大增加了与氨气作用的可能性,这种协同作用就使Cu-DTEDBA具有了小分子不具备的性能。最后,Cu-DTEDBA的稳定性使其可以反复再生利用。
Infinite coordination polymers are recognized as excellent platform for functionalization. Dithienylethene motifs, which are one of the most attractive functional moieties, were incorporated into an infinite coordination polymer, to deliver a "smart" porous material that can response to external stimuli. The obtained dithienylethene-based infinite coordination polymers(named Cu-DTEDBA) share the advantages of both infinite coordination polymers(porosity and stability) and dithienylethene motifs(photochromism). Moreover, the combination of dithienylethene and infinite coordination polymers gives rise to a synergistic effect, which induces functional behaviors of ammonia sensor applications. Both open and closed forms of Cu-DTEDBA exhibit distinct colorimetric change upon exposure to gaseous ammonia, which is not observed in dithienylethene free molecules.
Infinite coordination polymers are recognized as excellent platform for functionalization. Dithienylethene motifs, which are one of the most attractive functional moieties, were incorporated into an infinite coordination polymer, to deliver a "smart" porous material that can response to external stimuli. The obtained dithienylethene-based infinite coordination polymers(named Cu-DTEDBA) share the advantages of both infinite coordination polymers(porosity and stability) and dithienylethene motifs(photochromism). Moreover, the combination of dithienylethene and infinite coordination polymers gives rise to a synergistic effect, which induces functional behaviors of ammonia sensor applications. Both open and closed forms of Cu-DTEDBA exhibit distinct colorimetric change upon exposure to gaseous ammonia, which is not observed in dithienylethene free molecules.
引文
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