Supramolecular Interactions Induce Unexpectedly Strong Emissions from Triphenylamine-Functionalized Polytyrosine Blended with Poly(4-vinylpyridine) | |
Jheng, Yu-Ru; Mohamed, Mohamed Gamal; Kuo, Shiao-Wei | |
刊名 | POLYMERS
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2017 | |
卷号 | 9期号:10页码:503 |
ISSN号 | 2073-4360 |
英文摘要 | In this study, we synthesized a triphenylamine-functionalized polytyrosine (PTyr-TPA) through living ring opening polymerization with 4,4-diamino-4-methoxytriphenylamine (TPA-NH2) as an initiator, and used Fourier transform infrared (FTIR) and nuclear magnetic resonance spectroscopy to confirm the chemical structure. Photoluminescence spectroscopy revealed the photophysical properties of TPA-NH2 and PTyr-TPA and suggested that TPA-NH2 exhibited aggregation-caused quenching; in contrast, attaching the initiator to the rigid rod conformation of the PTyr segments caused PTyr-TPA to display aggregation-induced emission behavior. Differential scanning calorimetry revealed single glass transition temperatures for miscible PTyr-TPA/P4VP blends, the result of intermolecular hydrogen bonding between the pyridine units of P4VP and the phenolic OH units of PTyr-TPA, as confirmed through FTIR spectroscopic analyses. Furthermore, the chain behavior of PTyr-TPA transformed from a -sheet conformation to random coils after blending with P4VP, as determined using wide-angle X-ray diffraction. These findings suggest that the decreased emission intensity of PTyr-TPA resulted from release of the restricted intramolecular rotation of the triphenylamine moiety in the polypeptide center. |
公开日期 | 2017-12-25 |
内容类型 | 期刊论文 |
源URL | [http://ir.nimte.ac.cn/handle/174433/13598] ![]() |
专题 | 2017专题 |
推荐引用方式 GB/T 7714 | Jheng, Yu-Ru,Mohamed, Mohamed Gamal,Kuo, Shiao-Wei. Supramolecular Interactions Induce Unexpectedly Strong Emissions from Triphenylamine-Functionalized Polytyrosine Blended with Poly(4-vinylpyridine)[J]. POLYMERS,2017,9(10):503. |
APA | Jheng, Yu-Ru,Mohamed, Mohamed Gamal,&Kuo, Shiao-Wei.(2017).Supramolecular Interactions Induce Unexpectedly Strong Emissions from Triphenylamine-Functionalized Polytyrosine Blended with Poly(4-vinylpyridine).POLYMERS,9(10),503. |
MLA | Jheng, Yu-Ru,et al."Supramolecular Interactions Induce Unexpectedly Strong Emissions from Triphenylamine-Functionalized Polytyrosine Blended with Poly(4-vinylpyridine)".POLYMERS 9.10(2017):503. |
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