Research Papers Published as a Cover Paper of Chemical Communication, Highlight and Cover Paper of Journal of Materials Chemistry The ‘Feature Article’ that describes the photophysical properties and aromaticity of expanded porphyrins was selected as a cover paper of the Chemical Communication on 21 January, 2009. The Chemical Communication is one of the most prestigious and highly cited journals in chemistry, belong to top 1% journals. In this paper, Prof. Dongho Kim’s group has analyzed various photophysical properties of expanded porphyrins arising from the differences in the structure, size and aromaticity of the molecules, which leads to the understanding of fundamental concepts for the development of efficient molecular devices for alternative energy sources such as artificial photosynthetic systems. They also described the possibility in the application of two-photon absorption (TPA) phenomena by using expanded porphyrins as new 3D-optical memory and optical nonlinear materials, because these molecules exhibit very high TPA cross-section values due to their large number of pi-electrons as well as extended pi-conjugation pathways. In addition, Prof. Kim’s laboratory has examined the photophysical properties of one, two, and three-dimensional multiporphyrin arrays at the single molecule level by means of confocal laser scanning microscopy. This work has been reported as a “highlight” article as well as a back cover paper in the Journal of Materials Chemistry, Issue 8, 2009, which is one of the prominent scientific journals in the field of “Materials Chemistry”. In this report, they revealed that the conformational dynamics and excitation energy transfer processes of one, two, and three-dimensional multiporphyrin arrays at individual molecular level are strongly associated with the structural rigidity of molecular system. These results provide an insight into the signal transmission processes in various multichromophoric systems by suggesting that the design of well-defined and robust molecular architectures is highly recommended for the construction of molecular photonic devices. Prof. Dongho Kim is one of the prominent scientists in Korea. Owing to his scientific achievements, he received the Korea Science Award in Chemistry (2006), and has been selected as the Star Faculty award in 2005 as well as an Underwood Professor of Yonsei University in 2007. Furthermore, he has been selected as a leader of World Class University Project on Smart Nano Conjugates supported by the Ministry of Education, Science and Technology.