Cellulose is the most abundant renewable biopolymer in nature. Cellulose and cellulose derivatives are widely used in our daily life. However, much attention has been still paid to the development of new functional cellulose derivatives for high-value-added utilization of cellulose. Highly regio-selectively substituted cellulose derivative is expected to be a scaffold of photosensitizers because of its well-defined and regular structure. Indeed, we have reported that Langumir-Blodgett (LB) film of porphyrin-containing cellulose derivative exhibited high photon-electron conversion performance in the wavelength range from 400 to 450nm. However, the target wavelength range for a solar cell should be considered from 400 to 920 nm. Then, new several photosensitizer-bounded cellulose derivatives such as (metal phthalocyanine)-containing cellulose derivatives, squaraine-containing cellulose derivative were newly prepared and subjected to the evaluation of photon-electron conversion performances. As the results, (palladium phthalocyanine)-containing cellulose derivative has the highest photon-electron-conversion performance as a photoactive species in the red wavelength ranged from 600 to 700 nm.

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Preparation and properties of photosensitizer-bounded cellulose derivatives

249th National Meeting (2015)

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<br /> Preparation and properties of photosensitizer-bounded cellulose derivatives