https://scholars.lib.ntu.edu.tw/handle/123456789/598433
標題: | Real-Time Spectral Evolution of Interchain Coupling and Assembling during Solvent Vapor Annealing of Dispersed Conjugated Polymers | 作者: | Chou H.-C Hsu W.-C Yang Y Schanze K.S Luo S.-C Chen C. SHYH-CHYANG LUO |
關鍵字: | conjugated polymers;nanowires;poly(3-hexylthiophene);poly(para-phenylene ethynylene);solvent vapor annealing;Atomic force microscopy;Chlorine compounds;Fluorescence;Nanowires;Organic solar cells;Fluorescence analysis;Interchain coupling;Morphological characterization;Optical monitoring systems;Organic photovoltaic devices;Poly-3-hexylthiophene;Solvent-vapor annealing;Spectroscopic monitoring;Conjugated polymers | 公開日期: | 2021 | 卷: | 222 | 期: | 16 | 來源出版物: | Macromolecular Chemistry and Physics | 摘要: | Solvent vapor annealing (SVA) for polymer treatment is widely used for manufacturing organic photovoltaic devices, but the process is poorly understood on the microscopic scale. In this study, an optical monitoring system is designed and used to perform real-time fluorescence analysis of dispersed poly(3-hexylthiophene) (P3HT) and para-phenylene ethynylene (PPE) films during SVA. The initial swelling of aggregates occurs within seconds. Chain rearrangements then occur and an equilibrium state is reached within minutes. Surface morphologies for both P3HT and PPE polymers are examined using atomic force microscopy (AFM) before and after the SVA process. Although similar transformations from random globules to micrometer-scale nanowires are observed for both polymers, P3HT forms nanowires more easily and quickly than PPE does. The higher solubility of P3HT in chloroform results in superior long-range order; by contrast, PPE chains align into nanowires only with sufficient free space. Real-time spectroscopic monitoring of structures and morphological characterization of such structures through AFM during SVA can improve the understanding of how polymer chains rearrange into ordered structures. ? 2021 Wiley-VCH GmbH |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108326527&doi=10.1002%2fmacp.202100135&partnerID=40&md5=2a959a06a8bcef4ccc2a5a1cd42764da https://scholars.lib.ntu.edu.tw/handle/123456789/598433 |
ISSN: | 10221352 | DOI: | 10.1002/macp.202100135 |
顯示於: | 材料科學與工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。