Jae Yoon Shin

TL;DR: This tutorial review describes the recent developments of various topology-controlled expanded porphyrins and their photophysical properties, in conjunction with the topological transformation between Hückel and Möbius aromaticity by various conformational control methods, such as synthetic methods, temperature control, and protonation.

TL;DR: Detailed analyses of the solid-state Möbius structures of compounds 2b, 2c, and 2f showed that singly twisted structures are achieved without serious strain and that cyclic pi-conjugation is well-preserved, as needed for exhibiting strong diatropic ring currents.

TL;DR: The main purpose of this article is to describe the structure-property relationships of a variety of expanded porphyrins based on experimental and theoretical results, which include steady-state and time-resolved spectroscopic characterizations, non-linear absorption ability and nucleus-independent chemical shift calculations.

TL;DR: Investigation of protonation-triggered conformational changes of meso-octakis(pentafluorophenyl) and [36]octaphyrin suggests that the macrocycles control their topologies by pyrrole rotation to gain either Mobius or Huckel aromatic stabilization, depending on the number of pi-electrons.