Responsive Fluorescent Nanorods from Coassembly of Fullerene (C60) and Anthracene-Ended Hyperbranched Poly(ether amine) (AN-hPEA)

详细信息    查看全文

• 作者：Zhilong Su ; Bing Yu ; Xuesong Jiang ; Jie Yin
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：May 28, 2013
• 年：2013
• 卷：46
• 期：10
• 页码：3699-3707
• 全文大小：526K
• 年卷期：v.46,no.10(May 28, 2013)
• ISSN：1520-5835

文摘

We herein demonstrated a novel multiresponsive fluorescent nanorod based on C₆₀, which is fabricated through the versatile coassembly of fullerene C₆₀ and anthracene-ended hyperbranched poly(ether amine) (AN-hPEA). The supramolecular nanorods (C₆₀@AN-hPEA) can be further cross-linked through photodimerization of anthracene, and the size of the obtained nanorods is 2鈥?2 渭m in length and 50鈥?0 nm in diameter. C₆₀@AN-hPEA nanorods are amphiphilic, responsive, and fluorescent. The fluorescence of C₆₀@AN-hPEA nanorods in aqueous solution is responsive to temperature and pH. The C₆₀@AN-hPEA-1/4 nanorods exhibit the interesting temperature-enhanced fluorescence, while the fluorescence intensity of AN-hPEA without C₆₀ decreases with the increasing temperature. Detailed fluorescence study revealed that the temperature-enhanced fluorescence behavior of C₆₀@AN-hPEA-1/4 nanorods might be ascribed to the static quenching of the excited anthracene by C₆₀.