The present invention is to provide highly solid state emissive fluorophores of the formula 1 and 2 useful for the solid state lighting. The formula 1 and 2 have good solid state emission in blue and green region respectively. The zinc complexes of formula 1A and 2A have yellow and red emission respectively in solid state. The present invention also provide high solid state emissive assay of formula 1 and 2 to convert UV light into visible light by coating the color tunable materials on the 365- nm emitting solid state LED. The present invention further provides carbazole end- capped bipyridine for screening of metal salts with different counterions in solutions. The discrimination of the various metal salts can be monitored by noting the fluorescence change in solution. The zinc salts with different counterions have different emission color in solution. The present invention also develop a new two photon active fluorescent Zn2+ specific probe for detecting Zn2+ in cellular environments. Assay with formula 3 is used as a fluorescent probe for two photon imaging of Zn2+ ions in HeLa cells. The high two photon absorption cross section and fluorescence quantum yield of formula 3 made it as a useful probe for detecting Zn2+ in cellular environment by two photon excited fluorescence imaging.
本发明提供了用于固态照明的高固态发光荧光体的
化学式1和2,
化学式1和2分别在蓝色和绿色区域具有良好的固态发射。
化学式1A和2A的
锌配合物在固态中分别具有黄色和红色发射。本发明还提供了
化学式1和2的高固态发射测定,通过在365纳米发射固态LED上涂覆色可调材料将紫外光转换为可见光。本发明还提供了用于筛选不同配离子
金属盐的碳酰基端-端联
吡啶。通过观察溶液中的荧光变化,可以监测各种
金属盐的区分。不同配离子的
锌盐在溶液中具有不同的发射颜色。本发明还开发了一种新的双光子活性荧光Zn2+特异性探针,用于检测细胞环境中的Zn2+。使用
化学式3作为HeLa细胞中Zn2+离子的双光子成像的荧光探针。
化学式3的高双光子吸收截面和荧光量子产率使其成为通过双光子激发
荧光成像检测细胞环境中的Zn2+的有用探针。