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Pyrazoline derivatives have been investigated in many respects due to their blue light emission with high quantum yield [10e14], ready accessibility, and easily being used as carrier transporting as well as emitting materials [15]. Many have been reported as hole transporting or emitting materials in organic EL devices [16e18]. And also it is well known that the naphthalimide usually exhibits strong fluorescent emission on irradiation, which usually acts as supermolecular moieties for the study of photo-induced electron transfer [19,20], fluorescence switcher [21] or liquid crystal displays [22]. Recently, naphthalimide derivatives utilized as EL materials have been reported [23,24], whose fluorescence emission can be widely tuned (from blue to yellow, green and even red) with aminoand alkoxy-groups at the 4-position of naphthalimide. Many multichromophore compounds have been synthesized [9,25]. Our group has previously reported the synthesis of several benzothiazoyl pyrazoline derivatives containing aromatic heterocycle, which have good blue fluorescence. In this paper, we synthesized a series of novel bischromophore compounds containing pyrazoline and naphthalimide groups using 4-hydrazinenaphthalimides and chalcones (Scheme 1), which had good green light fluorescence. These bischromophore compounds have seldom been reported previously. |
至尊木蟲 (職業(yè)作家)
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由于喹唑啉的藍光發(fā)射具有高量子效率,良好輔助功能,并且很容易被用作發(fā)光材料的載體運輸,所以吡唑啉衍生物在很多方面都有對其進行研究 [15]. 據(jù)報導,孔運送或有機發(fā)光材料都是喹唑啉的材料[16e18]。 萘通常會顯示出強熒光發(fā)射放射,通常用于超分子亞胺光誘導電子轉(zhuǎn)移的研究[19,20], 熒光切換器[21] 或者液晶顯示器[22] 。最近報導,萘衍生物烷氧基在萘 4 位上被用作EL 材料 [23,24], 它的熒光發(fā)射范圍很寬 (從藍黃色、 綠色、 甚至到紅色) 。許多此類化合物已經(jīng)合成[9,25]. 我們課題組先前已經(jīng)報導了幾個含芳香雜環(huán)的苯并噻唑吡唑啉衍生物的合成,其中有好的藍色熒光。在本文中,我們合成了一系列新型 雙氯類化合物,它包含吡唑啉和4位取代的萘以及查爾酮 (表 1),會發(fā)出綠色熒光。以前這些雙氯類化合物很少報導。 |

金蟲 (正式寫手)
| 上部分:吡唑啉衍生物由于有高的量子產(chǎn)額已經(jīng)在許多方面被研究,現(xiàn)成已知,它易于用作傳輸載體及發(fā)光材料。在有機發(fā)光半導體設(shè)計中許多文章已經(jīng)報道如穴傳輸或發(fā)光材料。同樣眾所周知的,萘二甲酰亞胺在照射條件下通常顯示強的熒光發(fā)射光譜,它通常作為超分子,一半用于光致電子遷移、熒光轉(zhuǎn)換或液晶顯示的研究。最近,萘二甲酰亞胺衍生物用作發(fā)光半導體已經(jīng)報道,在萘二甲酰亞胺四位上有氨基和烷氧基時,其熒光發(fā)射光譜能被廣泛調(diào)節(jié)(由藍到黃 綠甚至紅)。許多多生色化合物已經(jīng)被合成。 |
金蟲 (正式寫手)
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