碳－氫鍵活化合成策略應用於新穎性聚集誘導發光材料分子開發

近年來利用過渡金屬媒介有機分子結構中之惰性碳－氫鍵活化暨官能基化及結構轉化策略是一種高效率合成方法。本實驗室近期透過此種合成策略開發出一系列新穎性六／五稠環式單／雙吡唑并[1,5-a]吡啶衍生物的製備方法，研究發現該類分子結構具有高度聚集誘導放光特性。文獻中針對六／五稠環式有機分子透過碳－氫鍵活化方式進行結構修飾後具備聚集誘導放光特性之研究亦有所報導，由於此類分子之結構通常都具有高缺電子特性，因此進行修飾後（例如：引入推拉電子基團）即可有效提升分子結構內電荷轉移及共軛程度，使得放光產生顯著紅位移現象。基此，化學家能夠有效率透過簡易合成方式開發出具備（近）紅外光場區放射特性之聚集／固態放光有機小分子，未來應用於生物顯像及有機發光二極體等材料科學領域。

Keywords

碳－氫鍵活化；吡唑并[1,5-a]吡啶；聚集誘導放光；生物顯像；有機發光二極體

Parallel abstracts

In recent years, utilizing transition-metal-mediated inert C-H bond activation/functionalization (transformation) within organic molecules has been proven as an efficient synthetic strategy. Our research group has lately harnessed this approach to conceive and advance a series of novel hexa/fused-pentacyclic mono/bi-pyrazolo[1,5-a]pyridines. It has come to light that such molecular architectures demonstrate pronounced characteristics of aggregation-induced emission. Several straightforward synthetic methodologies for analogous hexa/fused-pentacyclic organic molecules through C-H bond activation have been reported in the literature. Due to its inherently electron-deficient nature, chemists can facilitate their structural alterations, such as push-pull electron attributes, by facile synthetic methods that eventually enhance intramolecular charge transfer and structural conjugation. This, in turn, leads to a substantial red-shift in the emission wavelength. Consequently, chemists have devised a range of molecular aggregates and solid-state luminescent materials with near-infrared emission properties. These materials find further application in domains like biological imaging and organic light-emitting diode (OLED) fabrication.

Parallel keywords

C-H bond activation ； Pyrazolo[1,5-a]pyridine ； Aggregation-induced emission ； Biological imaging ； Organic light-emitting diode

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碳－氫鍵活化合成策略應用於新穎性聚集誘導發光材料分子開發

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