Absorption of light by a molecule (donor, D) generates an excited state, which may
subsequently transfer the excitation to another chromophore (acceptor, A) in the vicinity …

The phenomenon of metachromasia, which is related to molecular aggregation, leads to
significant changes in the photophysical properties of dyes. This review summarizes existing …

We have been investigating complexes composed of nanolayered materials with anionic
charges such as clay nanosheets and dye molecules such as cationic porphyrins. It was …

The mechanism inducing the unique absorption spectral shifts of porphyrin molecules upon
adsorption on the clay surface was experimentally confirmed to be the flattening of the meso …

This paper proposes a unique phenomenon of the strong enhancement in the fluorescence
quantum yield (φf) and the excited lifetime (τ) of tetra-cationic porphyrazine dye (Pz) upon a …

Partial replacement of one structural element in a solid with another of a similar size was
conducted to impart functionality to the solids and modify their properties. This phenomenon …

Multiple (or multivalent) interaction is the key in many biological systems. One of the most
important (photo-) chemical reactions, photosynthesis, is driven by regularly aligned …

Visible‐light‐driven H2 evolution based on Dye/TiO2/Pt hybrid photocatalysts was
investigated for a series of (E)‐3‐(5′‐{4‐[bis (4‐R1‐phenyl) amino] phenyl}‐4, 4′‐(R2) 2 …

Rhodamine 6G (R6G) was adsorbed on smectite clays, a natural montmorillonite, a synthetic
saponite, and synthetic hectorites, and the decolorization of the dyes upon visible light …

This paper proposes a novel methodology to improve noncollisional photochemical
reactions such as Förster resonance energy transfer on solid surfaces. Since an excited …