Method for Determining the Polymer Content in Nonsoluble Polydiacetylene Films: Application to Pentacosadiynoic Acid,Langmuir

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Method for Determining the Polymer Content in Nonsoluble Polydiacetylene Films: Application to Pentacosadiynoic Acid
Langmuir ( IF 3.7 ) Pub Date : 2017-01-31 00:00:00 , DOI: 10.1021/acs.langmuir.6b03147
Sylvie Spagnoli _{1,

2} , Emrick Briand _{3,

4} , Ian Vickridge _{3,

4} , Jean-Louis Fave _{3,

4} , Michel Schott _{3,

4}

Affiliation

The absorptivities of polydiacetylenes (PDAs) used in Langmuir films or vesicles for the development of PDA sensor films or other applications such as nonlinear optics and field-effect transistors are not known, so the polymer contents cannot be deduced from experimental spectra. Here we introduce a novel method, using nuclear reaction analysis (NRA), that allows a quantitative determination of the polymer content X proportion of monomers that have been incorporated into PDA chains. We apply it to pentacosadiynoic acid (PCDA) evaporated microcrystalline films. A calibration curve giving X as a function of the area under an absorption spectrum normalized to the monomer areal density is obtained for blue and red PCDA. The method is applicable to all kinds of films and to other PDAs, provided films with known molecular areal density are available. An example of the application to a PCDA Langmuir film is given.

中文翻译：

测定不溶性聚二乙炔薄膜中聚合物含量的方法：在五角adi二酸中的应用

Langmuir膜或囊泡中用于开发PDA传感器膜或其他应用（例如非线性光学器件和场效应晶体管）的聚二乙炔（PDA）的吸收率尚不清楚，因此无法从实验光谱中得出聚合物含量。在这里，我们介绍一种使用核反应分析（NRA）的新方法，该方法可以定量确定已掺入PDA链中的单体的聚合物含量X比例。我们将其应用于戊二醛酸（PCDA）蒸发的微晶膜。给出X的校准曲线对于蓝色和红色PCDA，获得了归一化为单体面积密度的吸收光谱下面积的函数。该方法适用于所有类型的胶片和其他PDA，前提是可以使用已知分子面积密度的胶片。给出了在PCDA Langmuir胶片上的应用示例。

更新日期：2017-01-31

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