Supramolecular polymer nanofibers via electrospinning of a heteroditopic monomer

Xuzhou Yan, Mi Zhou, Jianzhuang Chen, Xiaodong Chi, Shengyi Dong, Mingming Zhang, Xia Ding, Yihua Yu, Shuang Shao, Feihe Huang
2011 Chemical Communications  
S2 Materials and methods All reagents were commercially available and used as supplied without further purification. Compounds 2 S1 and 6 S2 were prepared according to the published procedures. NMR spectra were recorded with a Bruker Advance DMX 500 spectrophotometer or a Bruker Advance DMX 400 spectrophotometer with use of the deuterated solvent as the lock and the residual solvent or TMS as the internal reference. Low-resolution electrospray ionization mass spectra were recorded with a Bruker
more » ... orded with a Bruker Esquire 3000 Plus spectrometer. High-resolution mass spectrometry experiments were performed with a Bruker Daltonics Apex III spectrometer. Viscosity measurements were carried out with a Cannon-Ubbelohde semi-micro dilution viscometer at 25 °C in chloroform. The two-dimensional diffusion-ordered NMR spectra were recorded on a Bruker DRX500 spectrometer. Scanning electron microscopy investigations were carried out on a JEOL 6390LV instrument. Transmission electron microscopy investigations were carried out on a JEM-1200EX instrument. Atomic force microscopy investigations were carried out on a SPI-3800N instrument. Electrospun supramolecular polymer nanofibers were obtained under the following conditions, 25 kV, 2.0 mL/h syringe flow rate, and 10 cm working distance, from a concentrated solution (250 mM) of 1 in chloroform. Electronic Supplementary Material (ESI) for Chemical Communications This journal is
doi:10.1039/c1cc11790d pmid:21607249 fatcat:ntifboa6x5a73atdbqmxrxxcge