Polymorphism of the azobenzene dye compound methyl yellow
Polymorphism of the azobenzene dye compound methyl yellow
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偶氮苯染料化合物甲基黄的多晶型
DOI：
10.1039/c6ce00387g
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发表时间：
2016
期刊：
影响因子：
3.1
通讯作者：
Cruickshank D
中科院分区：
文献类型：
--
作者：
Cruickshank D
研究了氨基偶氮苯N，N-二甲基-4-氨基偶氮苯（DAB）的晶体结构和多晶型;报道了DAB的第二种多晶型，并用差示扫描量热法和晶格能及吸收光谱研究了两种多晶型之间的关系。在两种形式的DAB中不存在显著强的分子间相互作用的情况下，构象应变和累积π轨道重叠效应之间的平衡导致存在对映相关的多晶型物及其替代的堆积排列。两种多晶型物的UV/维斯光谱是不同的，因此说明了材料颜色上的小结构变化的重要性，这在特定的传感条件下可能表现不同。DAB已被主要用作酸/碱指示剂溶液和染料分子和这里建立的多晶型关系的影响进行了讨论，相对于应用范围，该分子发现作为传感器，并将其纳入到各种功能薄膜和设备。
The crystal structure and polymorphism of the well-known aminoazobenzene, N,N-dimethyl-4-aminoazobenzene (DAB) are studied; a second polymorph of DAB reported and the relationship between the two polymorphs studied using differential scanning calorimetry and by evaluating their lattice energies and absorption spectra. Without significantly strong intermolecular interactions present in the two forms of DAB, a balance between conformational strain and a cumulative π-orbital overlapping effect results in the existence of the enantiotropically related polymorphs and their alternative packing arrangements. The UV/vis spectra of the two polymorphs are different, thus illustrating the significance of small structural changes on the colour of a material, which could behave differently under particular sensing conditions. DAB has been used primarily as an acid/base indicator solution and a dye molecule and the implications of the polymorphic relationships established here are discussed with respect to the range of applications this molecule finds as a sensor and for its incorporation into various functional films and devices.
C.I.的晶体和分子结构
DOI：
10.1007/bf01186250
发表时间：
1992
期刊：
Journal of Crystallographic and Spectroscopic Research
影响因子：
--
作者：
A. Whitaker
通讯作者：
A. Whitaker
DOI：
10.1063/1.4934716
发表时间：
2015
期刊：
The Journal of chemical physics
影响因子：
--
作者：
A. Jackson;J. Skelton;Christopher H. Hendon;K. Butler;A. Walsh
通讯作者：
A. Walsh