Double Thia/sulfone[7]helicenes with Controlled Photophysical and Chiroptical Properties by Heteroatom Variation
Double Thia/sulfone[7]helicenes with Controlled Photophysical and Chiroptical Properties by Heteroatom Variation
复制标题
通过杂原子变异控制光物理和手性光学性质的双硫杂/砜[7]螺烯
DOI：
10.1002/asia.202200336
复制
发表时间：
2022
影响因子：
4.1
通讯作者：
Yunbin Hu
中科院分区：
文献类型：
--
作者：
Long Zhou;Haoliang Liu;Jingyun Tan;Chao Liu;Xiao-Yu Cao;Akimitsu Narita;Yunbin Hu
具有强手性光学响应和受控的手性物理的螺旋烯的开发是高度期望的，但具有挑战性。本工作合成了双硫杂/砜[7]螺旋烯，并与已报道的双氧杂[7]螺旋烯进行了比较，研究了杂原子对双杂螺旋烯的光物理和手性性质的影响。通过改变嵌入的杂原子从氧到硫，吸收和发射显着红移，随着沿着改善的发光不对称因子（glum）。特别是双砜[7]螺烯具有很强的红光至近红外（NIR）发光，其荧光强度为1.1×10-3，表明其具有作为NIR圆偏振发光体的潜力。
The development of helicenes with strong chiroptical response and controlled photophysics is highly desirable but challenging. In this work, double thia/sulfone[7helicenes were synthesized to investigate the heteroatom effect on the photophysical and chiroptical properties of double heterohelicenes through comparison with the previously reported double oxa[7helicene. By variation of the embedded heteroatoms from oxygen to sulfur, the absorption and emission were significantly red-shifted, along with the improved luminescence dissymmetry factor (glum ). In particular, the double sulfone[7helicene exhibited strong red to near-infrared (NIR) emission with glum of 1.1×10-3 , suggesting its potential as a NIR circularly polarized luminescence emitter.