研究目的
To synthesize and determine the structure of porphyrin nanorods formed by self-assembly of free-base meso 5,10,15,20-tetrakis-(4-N-methylpyridinium)porphyrin cations and tetraphenylborate anions.
研究成果
The study successfully synthesized and determined the structure of porphyrin nanorods using a combined experimental-computational approach. The structural model derived from this approach provides insight into the self-assembly process of porphyrin-based nano-objects.
研究不足
The 'nano' nature of the particles and their tendency to aggregate in the dry state limited the ability to isolate crystals of sufficient size and quality for single-crystal X-ray diffraction studies.
1：Experimental Design and Method Selection:
The synthesis involved ion-association between porphyrin cations and tetraphenylborate anions in a 3:1 EtOH/H2O mixture.
2：Sample Selection and Data Sources:
The nanorods were characterized using TEM, SEM, AFM, UV-vis absorption spectroscopy, solid state NMR, and synchrotron X-ray powder diffraction.
3：List of Experimental Equipment and Materials:
JEOL 1200 EXII microscope for TEM, Hitachi S4800 for SEM, NanoScope V for AFM, PerkinElmer Lambda 35 spectrophotometer for UV-vis, VNMRS-600 MHz instrument for NMR, and synchrotron X-ray powder diffraction at Soleil.
4：Experimental Procedures and Operational Workflow:
The nanorods were synthesized at 15 °C and 30 °C, characterized, and their structure was modeled using DFT calculations.
5：Data Analysis Methods:
The data were analyzed using FoX software for XRPD, and DFT calculations for structural optimization.
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