Solubility of P3HT in chloroform and chloroform:acetone mixtures: A spin-echo SANS study

• Tipo: Artigo em Revista Científica Internacional
• Data: 2025

Autores

Bernardo, G (Autor) FEUP; Adélio Mendes (Autor) FEUP; Parnell, SR (Autor) Outra

Revista

Título: Materials Letters

Vol. 393 Nº 138606

ISSN: 0167-577X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

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Outras Informações

ID Authenticus: P-018-M88

DOI: 10.1016/j.matlet.2025.138606

Abstract (EN): P3HT is a semiconducting polymer widely used in solution-processable photovoltaic research. Measuring the solubility of P3HT in organic solvents is usually an arduous and time-consuming process. Here we report the presence or absence of P3HT nanoparticle agglomeration in optically opaque solutions of P3HT, with concentrations ranging from 6.2 to 22.0 mgmL(-1), in pure chloroform and in chloroform:acetone mixtures, using the neutron scattering technique, Spin-Echo Small Angle Neutron Scattering (SESANS). We demonstrate in-situ that the solubility of P3HT decreases from similar to 22.0 mg/mL to < 6.2 mg/mL when the amount of acetone in solution increases from 0 vol% to 60 vol%. This work uses the ability of SESANS to probe P3HT nanoparticle aggregates, with dimensions ranging from similar to 1 to several microns, in P3HT solutions with concentrations above the solubility limit.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4