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Macroscopic Wires from Fluorophore-Quencher Dyads with Long-Lived Blue Emission
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2017-09-13 00:00:00 , DOI: 10.1021/acs.jpca.7b08268 Tao Wang , Ziye Wu , Wei Sun , Shengye Jin 1 , Xingyuan Zhang , Chuanyao Zhou 1 , Jun Jiang , Yi Luo , Guoqing Zhang
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2017-09-13 00:00:00 , DOI: 10.1021/acs.jpca.7b08268 Tao Wang , Ziye Wu , Wei Sun , Shengye Jin 1 , Xingyuan Zhang , Chuanyao Zhou 1 , Jun Jiang , Yi Luo , Guoqing Zhang
Affiliation
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We report the formation of macroscopic wires up to centimeters in length from a series of structurally flexible, covalently tethered small-molecular fluorophore-quencher dyads (FQDs, average MW = 425 Da), comprised of carbazole, melatonin, and cyanobenzoate moieties. These FQDs are nonemissive in organic solutions but become moderately to highly luminescent (ΦF = 0.037–0.39) upon formation of wires with emission maxima in the blue region (446–483 nm). The blue photoluminescence (PL) is ascribed to a combination of singlet charge transfer, localized triplet state, and possibly delayed fluorescence emissions with intrinsic luminescence lifetimes ranging from 0.228 to 21333 μs, based on luminescence, transient absorption measurements, X-ray diffraction, and calculations.
中文翻译：
带有长寿命蓝色发射的荧光团-猝灭剂二元体的宏观电线
我们报告了由一系列结构灵活的，共价键合的小分子荧光猝灭剂二元组（FQD，平均MW = 425 Da）组成的长达厘米的宏观金属丝的形成，这些二元组由咔唑，褪黑素和氰基苯甲酸酯部分组成。这些FQDs是在有机溶液非发射但成为中度至高度发光（Φ ˚F = 0.037-0.39）在与在蓝光区（446-483纳米）的发光峰值的形成导线。蓝色光致发光（PL）归因于单重态电荷转移，局部三重态和可能的延迟荧光发射的组合，其固有发光寿命在0.228至21333μs之间，基于发光，瞬态吸收测量，X射线衍射和计算。
更新日期：2017-09-13
中文翻译：
带有长寿命蓝色发射的荧光团-猝灭剂二元体的宏观电线
我们报告了由一系列结构灵活的，共价键合的小分子荧光猝灭剂二元组（FQD，平均MW = 425 Da）组成的长达厘米的宏观金属丝的形成，这些二元组由咔唑，褪黑素和氰基苯甲酸酯部分组成。这些FQDs是在有机溶液非发射但成为中度至高度发光（Φ ˚F = 0.037-0.39）在与在蓝光区（446-483纳米）的发光峰值的形成导线。蓝色光致发光（PL）归因于单重态电荷转移，局部三重态和可能的延迟荧光发射的组合，其固有发光寿命在0.228至21333μs之间，基于发光，瞬态吸收测量，X射线衍射和计算。
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