Constructing Full-Color Highly Emissive Organic Solids Based on an X-Shaped Tetrasubstituted Benzene Skeleton
Constructing Full-Color Highly Emissive Organic Solids Based on an X-Shaped Tetrasubstituted Benzene Skeleton
复制标题
基于 X 形四取代苯骨架构建全色高发射有机固体
DOI：
10.1021/acs.jpcc.8b01251
复制
发表时间：
2018-05-17
影响因子：
3.7
通讯作者：
Zhang, Hongyu
中科院分区：
文献类型：
--
作者：
Huang, Rui;Liu, Bin;Zhang, Hongyu
为了突出独特的单苯骨架相对于常见的大pi体系的潜力，我们提出了一种构建单苯荧光团1-9的总体策略，该荧光团在固态下具有令人着迷的发射特性，例如高荧光量子产率和多种发射颜色。我们的分子设计是x型四取代苯，其中两个给电子基（EDGs）和两个吸电子基以x形排列。这种分子设计使得一个非常小的单苯骨架在固态下显示出强烈的荧光，因为在晶体中固有地避免了pi-pi堆叠和偶极子-偶极子相互作用。更重要的是，通过简单地改变edg，这些单苯荧光团的固态发射颜色可以连续地从深蓝色调到红色。此外，这些单苯荧光团作为晶体激光介质的潜在应用已被放大自发发射测量证明。
With the aim of highlighting the potential talent of the unique single-benzene skeleton versus the common large pi-systems, we propose a general strategy to construct single-benzene fluorophores 1-9, featuring fascinating emission properties in the solid state, for example, high fluorescence quantum yields and wide variety of emission colors. Our molecular design is X-shaped tetrasubstituted benzene of which two electron-donating groups (EDGs) and two electron withdrawing groups are arranged in an X-shaped fashion. This molecular design enables a very small single-benzene skeleton to show intense fluorescence in the solid state because the pi-pi stacking and dipole-dipole interaction are inherently avoided in the crystal. More importantly, by simply changing the EDGs, the emission colors in the solid state of these single-benzene fluorophores can be continuously tuned from deep blue to red. In addition, the potential applications of these single-benzene fluorophores as crystal lasing media have been demonstrated by an amplified spontaneous emission measurement.