A Calixarene Promotes Disaggregation and Sensing Performance of Carboxyphenyl Porphyrin Films.

ABSTRACT: The aggregation of a free base porphyrin, meso-tetrakis(4-carboxyphenyl)porphyrin and its Zn(II) derivative have been studied at the air/water interface in the presence of a p-tert-butylcalyx[8]arene matrix. The mixed Langmuir films were obtained either by premixing the compounds (cospreading) or by sequential addition. The negative deviation from the additivity rule of the cospread films is indicative of a comparatively good miscibility that was further confirmed by Brewster angle microscopy. The images of the cospread mixed films showed a more homogeneous morphology in comparison with those of pure porphyrin that is attributed to a deeper and earlier self-aggregation state at the interface of the latter. These results were similar for both porphyrins and revealed the disaggregating effec

SUBMITTER: Flores-Sanchez R 

PROVIDER: S-EPMC7114168 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature