Optical changes induced in Zn porphyrin solutions and LB films by exposure to amines
Optical changes induced in Zn porphyrin solutions and LB films by exposure to amines
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DOI：
10.1142/s1088424606000314
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发表时间：
2006-07
影响因子：
1.5
通讯作者：
A. Dunbar;T. Richardson;A. J. Mcnaughton;A. Cadby;J. Hutchinson;C. Hunter
中科院分区：
文献类型：
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作者：
A. Dunbar;T. Richardson;A. J. Mcnaughton;A. Cadby;J. Hutchinson;C. Hunter
5，10，15，20-四[3，4-双（2-乙基己氧基）苯基]-21H，23H-卟啉合锌（ZnEHO）是一种高稳定性的化合物，在可见光范围内具有彩色吸收光谱。暴露的氯仿溶液的ZnEHO胺示出诱导的特征光谱的变化，由于电荷转移之间的胺和离域的π-电子系统内的高度共轭分子。将仅含有ZnEHO的固态Langmuir Blodgett（LB）膜与含有ZnEHO和杯[8]芳烃的混合物的膜进行比较。透明杯[8]芳烃不改变光学响应，但有助于胺气体扩散到LB膜中。原子力显微镜（AFM）和扫描近场光学显微镜（SNOM）的图像证明了样品之间的拓扑结构和成分的差异。ZnEHO和杯[8]芳烃的LB膜对各种不同胺的响应表明，这是一种用作胺传感器的良好材料系统。
The 5,10,15,20-tetrakis[3,4-bis(2-ethylhexyloxy)phenyl]-21H,23H-porphinato zinc(II) (ZnEHO) is highly stable and exhibits a colorful absorption spectrum in the visible range. Exposure of a chloroform solution of ZnEHO to amines is shown to induce changes in the characteristic optical spectrum owing to charge transfer between the amine and the delocalized π-electron system within the highly conjugated molecule. Solid state Langmuir Blodgett (LB) films containing only ZnEHO are compared to films containing a mixture of ZnEHO and calix[8]arene. The transparent calix[8]arene does not change the optical response but aids the diffusion of the amine gas into the LB films. Atomic force microscopy (AFM) and scanning near-field optical microscopy (SNOM) images demonstrate the topological and compositional differences between the samples. The response of the LB films of ZnEHO and calix[8]arene to a variety of different amines demonstrates that this is a good material system for use as an amine sensor.