Donor-acceptor-dyes with extended conjugation, such as D–π–A–π–D type, are being intensively investigated as components of near-infrared (NIR) organic light-emitting diodes (OLEDs). In this communication, novel D–π–A–π–D dye, 4,4′-([1,2,5]thiadiazolo[3,4-d]pyridazine-4,7-diyl)bis(N,N-bis(4-methoxyphenyl)aniline), was synthesized by Stille cross-coupling reaction of 4,7-dibromo-[1,2,5]thiadiazolo[3,4-d]pyridazine. The structure of newly synthesized compounds was established by elemental analysis, high-resolution mass-spectrometry, ¹H, ¹³C NMR, IR, and UV spectroscopy. The photophysical properties of the title compound were studied.

中文翻译：

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4,4'-([1,2,5]噻二唑并[3,4-d]哒嗪-4,7-二基)双(N,N-双(4-甲氧基苯基)苯胺)

作为近红外 (NIR) 有机发光二极管 (OLED) 的成分，具有扩展共轭的供体-受体染料，例如 D–π–A–π–D 型，正在得到深入研究。在本通讯中，新型 D–π–A–π–D 染料，4,4'-([1,2,5]噻二唑 [3,4- d ]哒嗪-4,7-二基)双( N , N -双(4-甲氧基苯基)苯胺),通过4,7-二溴-[1,2,5]噻二唑并[3,4- d ]哒嗪的Stille交叉偶联反应合成。通过元素分析、高分辨率质谱、¹ H、¹³ C NMR、IR 和 UV 光谱确定了新合成化合物的结构。研究了标题化合物的光物理性质。