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首页> 外文期刊>Chemistry: A European journal >A B ichromophore Based on Perylene and Terrylene for Energy Transfer Studies at the Single-Molecule Level
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A B ichromophore Based on Perylene and Terrylene for Energy Transfer Studies at the Single-Molecule Level

机译：基于Per和三甲苯的双发色团用于单分子水平的能量转移研究

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摘要

A functionalized dialkylperylene and a modified terrylenetetracarboxdiimide (TTCDI) were joined to-gether by a hexanediyl spacer. The resulting bichromophoric molecule 4 is a suitable model system for donor - ac-ceptor energy transfer studies at the single-molecule level. With its absorption and fluorescence maximum at shorter wavelengths (#lambda#_max = 450 nm, #lambda#_fl=458 nm) the dialkylperylene acts as the donor, while the TTCDI with #lambda#_max = 665 nm and #lambda#_fl = 705 nm is the cceptor moleucle. Thesynthetic route to the new bichromophoric molecule and its optical properties (UV/Vis, fluorescence spectroscopy) are presented herein. Energy transfer from the perlyene to the terrylene moiety was ocnfirmed by conventioal ensemble fluorescence excitation and emission spectroscopy. Single bichromophores 4 embedded in polyvinyl butyral were imaged with a scanning confocal optical microscope at room temperature by selectively exciting the perylene chromophore and detecting the terrylene emission.
机译：通过己二基间隔基将官能化的二烷基per和改性的ylene四碳二亚胺（TTCDI）结合在一起。所得的双色分子4是用于单分子水平供体-ac受体能量转移研究的合适模型系统。由于其在较短波长下的吸收和荧光最大值（＃lambda＃_max = 450 nm，＃lambda＃_fl = 458 nm），二烷基per用作供体，而具有＃lambda＃_max = 665 nm和＃lambda＃_fl =受体分子为705 nm。本文介绍了新的双色分子的合成途径及其光学性质（UV / Vis，荧光光谱）。通过常规的集合荧光激发和发射光谱确认了从二烯到三甲苯部分的能量转移。通过选择性地激发per发色团并检测the的发射，在室温下用扫描共聚焦光学显微镜对嵌入聚乙烯醇缩丁醛中的单个双色团4进行成像。

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