Assembly of One-Dimensional Organic Luminescent Nanowires Based on Quinacridone Derivatives

• Published in: Journal of physical chemistry. C Vol. 111; no. 26; pp. 9177 - 9183
• Main Authors: Wang, Jia, Zhao, Yunfeng, Zhang, Junhu, Zhang, Jingying, Yang, Bai, Wang, Yue, Zhang, Dingke, You, Han, Ma, Dongge
• Format: Journal Article
• Language: English
• Published: American Chemical Society 05.07.2007
• ISSN: 1932-7447; 1932-7455
• DOI: 10.1021/jp072488x

The quinacridone derivatives N,N ‘-dialkyl-1,3,8,10-tetramethylquinacridone (CnTMQA, n = 6, 10, 14) were used as building blocks to assemble luminescent nano- and microscale wires. It was demonstrated that CnTMQA with different lengths of alkyl chains display obviously different wire formation properties. C10TMQA and C14TMQA showed a stronger tendency to form 1-D nano- and microstructures compared with C6TMQA. The C10TMQA molecules could be employed to fabricate the wires with different diameters, which exhibited a size-dependent luminescence property. The emission spectrum of the C10TMQA wires with diameters of 200−500 nm shows a broad emission band at 560 nm and a shoulder at around 535 nm, while the emission spectrum of the C10TMQA wires with diameters of 2−3 μm reveals a narrower emission band at 563 nm. For the CnTMQA-based samples with different morphologies, the emission property change tendency agrees with that of the powder X-ray diffraction patterns of these samples.