Luminescent organic dyes with tuning emission in widely visible gamut are still interesting challenging. Herein, we report two naphthalimide derivatives (NAPP, NAPTPA), which can output the variable emission colors covering the whole visible spectra from purple to far-red in aqueous solution. Both naphthalimide derivatives can exhibit bright emission in aqueous solution by introducing a phenyl ring into 4-site of naphthalimide, which acts as a π-bridge in delocalized system and not affects the intramolecular charge transfer process of naphthalimide dyes. Comparison with three analogues (NAPDMP, NAPMOP and NAPDMA), we evidenced the bright emissions in aqueous solution are from the amorphous emission different from the common crystal emission of naphthalimide dyes. We further fabricated the NAPP and NAPTPA into different nanoparticles matrixes to construct the multi-color toolbox, which could output four colors (purple, blue, green and red) in aqueous solution and yellow emission in crystal. Moreover, the white emission system was obtained through solution doping method.

在宽广的色域中具有可调谐发射的发光有机染料仍然是有趣的挑战。在本文中，我们报告了两种萘二甲酰亚胺衍生物（NAPP，NAPTPA），它们可以输出可变的发射颜色，覆盖水溶液中从紫色到远红色的整个可见光谱。通过将苯环引入萘二甲酰亚胺的4-位中，这两种萘二甲酰亚胺衍生物都可以在水溶液中表现出明亮的发射，该苯环在离域体系中用作π桥，并且不影响萘二甲酰亚胺染料的分子内电荷转移过程。与三种类似物（NAPDMP，NAPMOP和NAPDMA）的比较），我们证明了水溶液中的明亮发射源于与萘二甲酰亚胺染料的普通晶体发射不同的无定形发射。我们进一步将NAPP和NAPTPA制成了不同的纳米颗粒基质，以构建多色工具箱，该工具箱可以在水溶液中输出四种颜色（紫色，蓝色，绿色和红色），并在晶体中发出黄色。此外，通过溶液掺杂法获得了白色发射系统。