Upconverted blue electrochemiluminescence of 9,10-diphenylanthracene with ultrafast response on photo-electro functional DNA/Ru(bpy)32+ hybrid electrode

Upconverted blue electrochemiluminescence of 9,10-diphenylanthracene with ultrafast response on photo-electro functional DNA/Ru(bpy)32+ hybrid electrode
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光电功能 DNA/Ru(bpy)32 混合电极上超快响应的 9,10-二苯基蒽上转换蓝色电化学发光

DOI:
10.1039/d0tc05651k
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发表时间:
2021
影响因子:
6.4
通讯作者:
Kobayashi Norihisa
Kobayashi Norihisa
中科院分区:
材料科学2区
文献类型:
--
作者:
Ozawa Ryuki;Minami Haruki;Nakamura Kazuki;Kobayashi Norihisa

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电致化学发光(ECL)是一种由电化学氧化还原反应引起的发光现象,在轻质、柔性发光器件方面具有潜在的应用前景。在此之前,通过在DNA修饰电极上引入橙子电化学发光材料Ru(bpy)32+,在外加交流电压下成功地获得了低于100 μs的超快电化学发光响应。本研究将蓝色发光的9,10-二苯基蒽(DPA)引入到由DNA/Ru(bpy)32+杂化电极组成的ECL器件中。因此,在比诱导DPA本身氧化还原反应所需的电压更低的施加电压下,从DNA/Ru(bpy)32+混合电极获得了DPA的蓝色ECL。这种低电压驱动的蓝色电致发光归因于DNA/Ru(bpy)32+杂化电极中Ru(bpy)32+的三重态-三重态能量转移,随后是电解质溶液中DPA的三重态-三重态湮灭上转换反应。此外,超快响应,电化学触发的DPA的蓝色发光被成功地观察到。
Electrochemiluminescence (ECL), a light-emitting phenomenon induced by electrochemical redox reactions, has the potential for applications in lightweight and flexible light-emitting devices. Previously, an ultrafast ECL response below 100 μs was successfully obtained under an applied AC voltage by introducing Ru(bpy)32+, an orange ECL material, onto a DNA-modified electrode. This study introduced blue-luminescent 9,10-diphenylanthracene (DPA) into an ECL device consisting of the DNA/Ru(bpy)32+ hybrid electrodes. Consequently, blue ECL from DPA was obtained from the DNA/Ru(bpy)32+ hybrid electrode at a lower applied voltage than that required to induce the redox reactions of DPA itself. This lower-voltage-drivable blue ECL was attributed to triplet–triplet energy transfer from Ru(bpy)32+ in the DNA/Ru(bpy)32+ hybrid electrode followed by a triplet–triplet annihilation upconversion reaction of DPA in the electrolyte solution. Moreover, ultrafast-response, electrochemically triggered blue luminescence from DPA was successfully observed.
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