Irreversible transformation of the porphyrin supramolecular structures under a water vapor environment

RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE

Irreversible transformation of the porphyrin supramolecular structures under a water vapor environment

YE Ming，

ZHANG Yi

Nuclear Science and Techniques

Vol.22, No.1

pp.30-34

Published in print 20 Feb 2011

DOI：10.13538/j.1001-8042/nst.22.30-34

83800

Supramolecular structures formed by H₄TPPS₄^2– have been widely used for different applications. In this paper, the stability of H₄TPPS₄²⁻ nanorods on mica substrate is investigated by atom force microscopy (AFM) observation. An irreversible transformation of H₄TPPS₄^2– from nanorods (3.8±0.4 nm in height) to a lower film structure (1.9±0.4 nm in height) was found with the samples incubated at various relative humidities (RH). The transformation rate depends strongly on the RH and environment temperature.

Supramolecular structuresH4TPPS42−StabilityAFM

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