Development of Photo-functional and energy-related materials based on nano-structured materials
- SHINSUKE TAKAGI
- Professor, Department of Applied Chemistry, Research Center for Hydrogen Energy-based Society, Tokyo Metropolitan University
Carbon neutral is an important concept to solve an energy and environmental problems. A development of renewable energy for the realization of carbon neutral is expected. Currently, an artificial photosynthesis that converts solar energy to chemical energy receives much attention. To contribute to these issue, our current research subjects are shown below.
- Research on Artificial light harvesting system
The quantitative excited energy transfer reaction between cationic porphyrins on an anionic clay surface was successfully achieved by using the “Size- Matching Rule” that is our original technique. It was revealed that the important factors for the efficient energy transfer reaction are (i) suppression of the self-quenching between adjacent dyes, and (ii) suppression of the segregated adsorption structure of two kinds of dyes on the clay surface. In addition to these, hydrogen evolution systems using sunlight as an energy source has been developed.
- Surface – Fixation Induced Emission on the nanosheets
We investigated the fluorescence enhancement behavior of AIE (Aggregation Induced Emission) – active dyes on the clay nanosheet. Judging from their adsorption observation on the clay in water, the factor for the fluorescence enhancement is turned out not to be AIE, but is to be Surface – Fixation Induced Emission (S – FIE) mechanism. While the effect of AIE depended on the molecular structure of dye in water-dioxane, S – FIE worked even for the dye that has bulky substituent.
- Environmentally responsive photo-functional materials
Photo-functional materials such as solvatochromic or vapochromic membranes were constructed by using layered materials.
Construction of photo-functional and energy-related materials based on nano-structured materials
