Enhanced Photocurrent Generation by F枚rster Resonance Energy Transfer between Phospholipid-Assembled Conjugated Oligoelectrolytes and Nile Red
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- 作者：Yebin Lee ; Ilseung Yang ; Jung Eun Lee ; Sunjin Hwang ; Jong Woo Lee ; Seung-Soo Um ; Thanh Luan Nguyen ; Pil J. Yoo ; Han Young Woo ; Juhyun Park ; Seong Keun Kim
- 刊名：The Journal of Physical Chemistry C
- 出版年：2013
- 出版时间：February 21, 2013
- 年：2013
- 卷：117
- 期：7
- 页码：3298-3307
- 全文大小：609K
- 年卷期：v.117,no.7(February 21, 2013)
- ISSN：1932-7455
文摘
We show that F枚rster resonance energy transfer (FRET) between a conjugated oligoelectrolyte based on distyrylstilbene (DSSN+) and Nile red can enhance photocurrent generation when the photoagents are assembled vertically on gold electrodes. DSSN+ and Nile red intercalated into phospholipid membranes of unilamellar vesicles were found to form a useful FRET system because of the solvatochromic properties of DSSN+, and the accompanying photophysical properties were suitable for FRET with Nile red. As a result, a FRET efficiency of 93鈥?4% was achieved, as shown by steady-state and time-resolved spectra in vesicle solutions. When Nile red was tethered in a self-assembled monolayer of 11-mercaptoundecanoic acid (MUA) on gold electrodes and phospholipid-assembled DSSN+ was sequentially organized on the MUA layer, the anodic photocurrent increased notably, reaching about 815 nA/cm2 by virtue of FRET between the vertically aligned dyes.