去錳光合系統二與聚丙烯醯胺水膠於光擷取系統媒介之應用

The application of Mn-depleted PSII within polyacrylamide gels as a medium of light-harvesting systems

林廷儒(Ting-Ru Lin)

指導教授 ： 林致廷

國立臺灣大學/電機資訊學院/生醫電子與資訊學研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.10002

摘要

由市售波菜抽取而出的光系統二(PSII)可用於光能轉換系統，系統中光能轉換效率的增加可藉由組合polyacrylamide gels及Mn-depleted PSII兩者的技術來達成。前者利用膠體的組成可確保光系統二在網狀結構當中的穩定性及活性，並藉由多離子導電通道的組成來增加材料的導電性。進一步的，去除Mn-cluster後的光系統可避免原先在光電能轉換反應中為穩定四個氧化等價物所需的四顆光子能量，故吸收的外界能量能更有效率的進行轉換。依照上述方法製造的元件可展現出大於過去研究十倍以上的光電流。此突破性成果顯示將polyacrylamide gels及Mn-depleted PSII兩技術結合在多方領域上的可能應用，如光感器、生物感測器及光能轉換元件。

關鍵字

光系統二 ； 電子傳遞蛋白 ； 光能擷取元件

並列摘要

The photo-energy conversion efficiency of photosystem II (PSII) complexes extracted from spinach was enhanced in a long-term period through the combination of polyacrylamide gels and Mn-depleted photosystem II complexes. The formation of PSII complexes within polyacrylamide gels demonstrated sustainable activity and motility where counterions were conducted through multiple paths in the matrix structure. The depletion of tetranuclear manganese cluster of PSII complexes by Tris-washed treatment prevented the utilization of four quanta of light for four oxidizing equivalents during the conversion, resulting in the increase of external energy conversion efficiency. This methodology asserted 262 nA photocurrent, a fourfold photocurrent of the past reported on self-assembled monolayer or mutilayer structures in both short-term and long-term statistics. To conclude, this new combination of polyacylaimde gels and Mn-deleted PSII complexes may be employed in many research fields such as photovoltaic devices, photosensors, biosensors, or photoelectrochemical cells in future.

並列關鍵字

Photosystem II ； PS II ； polyacrylamide gels ； light-harvesting system ； Mn-depleted PSII ； proton conductor

參考文獻

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