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

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2025-08-15 Epub Date: 2025-04-18 DOI:10.1016/j.matlet.2025.138606

Gabriel Bernardo , Adélio Mendes , Steven R. Parnell

引用次数: 0

Abstract

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 mg·mL⁻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 ∼ 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 ∼ 1 to several microns, in P3HT solutions with concentrations above the solubility limit.

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P3HT在氯仿和氯仿丙酮混合物中的溶解度：一个自旋回声SANS研究

P3HT是一种半导体聚合物，广泛应用于溶液可加工光伏研究。测量P3HT在有机溶剂中的溶解度通常是一个艰巨而耗时的过程。本研究利用中子散射技术——自旋回波小角中子散射（SESANS），研究了纯氯仿和氯仿：丙酮混合物中浓度为6.2 ~ 22.0 mg·mL−1的P3HT光学不透明溶液中P3HT纳米颗粒团聚的存在或不存在。我们在现场证明，P3HT的溶解度从~ 22.0 mg/mL降低到<；当丙酮在溶液中的量从0 vol%增加到60 vol%时，为6.2 mg/mL。这项工作利用SESANS在浓度超过溶解度极限的P3HT溶液中探测P3HT纳米颗粒聚集体的能力，其尺寸范围从~ 1到几微米。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive