急-两亲Cu-氮杂亚甲基二吡咯染料J-聚集体纳米片

Nanosheets of J-aggregates based on amphiphilic Cu - azadipyrromethene dye

摘要:

氮杂亚甲基二吡咯（ADP）类染料因其优异的光学性质在诸多领域有广泛的应用。以含两条十二烷氧基疏水链的ADP和含两条聚乙二醇亲水链的ADP为配体与Cu(II)络合，合成了一种两亲性Cu(II)-ADP配合物染料Ⅰ，通过1H NMR、MS及元素分析等方法表征了其化学结构。UV-Vis吸收光谱研究表明染料Ⅰ在乙醇/水混合溶液中自组装形成J型聚集体，最大吸收峰发生89 nm的红移。AFM和TEM研究发现其聚集体呈现二维纳米片形貌，进一步的SAXS分析显示染料Ⅰ的聚集体以双分子层形式进行堆积。

Abstract:

Azadipyrromethene (ADP) dyes have been applied widely in various fields due to their outstanding optical properties. An amphiphilic Cu(II)-ADP dye Ⅰ was designed and synthesized by the coordination of one ADP ligand containing two hydrophobic dodecyloxy chains and one ADP ligand containing two hydrophilic poly ethylene glycol chains with Cu(II). The dye Ⅰ was characterized by 1H NMR, MS, and elemental analysis. UV-Vis absorption spectroscopic studies indicated that the dye Ⅰ self-assembled into J-type aggregates in ethanol/water with bathochromic shift of 89 nm. Further AFM and TEM studies indicated a two-dimensional nanosheets of the aggregates. SAXS experiments indicated a bilayer structure of the J-aggregates of dye Ⅰ.