November 01 (Wednesday)
BioMEMS 및 센서
Oral,
제8발표장(301호),
16:50~17:50
  • Chair :
  •  이승재(원광대)
We08D-5
16:50~17:50
Photocurrent Enhancement based on Charge Transfer between CNTs and Thylakoids
윤재형, 홍현욱(연세대학교), 김경훈(성균관대학교), 류원형(연세대학교)
Extraction of photosynthetic electrons from living plants or isolated photosynthetic complexes such as PSII, PSI, or thylakoids have recently been demonstrated. In particular, isolated thylakoids are stable and can be coated on various types of electrodes by simple drop casting or dip-coating methods. However, when the thylakoids coating become thicker, electrical connections are difficult to achieve between thylakoids and working electrodes. In this work, we propose use of carbon nanotubes (CNTs) to facilitate electrical connections between thylakoids and working electrodes. Thylakoids were extracted from spinach and different types of CNTs were prepared and added to the aqueous thylakoid solution. 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), Triton X-100, and mussel adhesive protein (MAP) were attached to CNTs and added to the thylakoid solutions. Zeta potentials of the three CNTs were measured and fluorescence responses of the CNTs were measured. The fluorescence quenching in MAP-treated CNTs and thylakoids solution as compared to thylakoids alone and the solution of CNTs treated DOPC or Triton X-100 and thylakoids suggests enhanced charge transfer between the thylakoids and the MAP-treated CNTs. Finally, photocurrent enhancement is demonstrated by measuring light-triggered currents from the MAP-treated CNT-thylakoid complexes.
Keywords : Photosynthesis(광합성), Photocurrent(광합성 전류), Carbon nanotube(탄소 나노 튜브), Surfactant(계면 활성제)
Paper : We08D-5.pdf

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