Tautomerization within a Single Porphycene Molecule

Tautomerization within a Single Porphycene Molecule 7.2.2.1 Introduction 

2 Direct Observation of Single-Molecule Tautomerization Using STM 1157 

Og = 2.55 A and bg = 3.61 A). A molecule can be switched between two orientations through thermal- or STM-induced excitation. (c) Chemical structures of a porphycene molecule with the cis tautomer state. The switching between the two orientations in (a,b) corresponds to a cis-cis tautomerization. (Reproduced from Kumagai et al. [31]. Copyright (2014), with permission of Nature Publishing.) 

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