发光
激发
分子内力
手性(物理)
激发态
材料科学
化学物理
激发波长
分子物理学
光化学
化学
波长
纳米技术
光电子学
物理
原子物理学
立体化学
量子力学
手征对称破缺
Nambu–Jona Lasinio模型
夸克
作者
Chenlu Xue,Yuqian Jiang,Han-Xiao Wang,Cong Du,Lifei Xu,Tiesheng Li,Minghua Liu
标识
DOI:10.1002/anie.202205633
摘要
Here, we combined the merits of emergent excitation-dependent (ExD) emission and circularly polarized luminescence to develop an excitation-dependent circularly polarized luminescence (ExD CPL) material showing unique features. A series of acylhydrazones based on a chiral tartaric skeleton was designed and found to self-assemble into helical nanostructures through non-covalent bonds. The helical assemblies showed ExD CPL due to the cooperation of chirality transfer and excited state intramolecular proton transfer (ESIPT). Remarkably, not only the emission wavelength could be tuned by the excitation wavelength but the handedness of CPL could be modulated in an inverted or ON/OFF manner as well, thus leading to the first example of an ExD inverted or ON/OFF switchable CPL system. Time-dependent density functional theory (TD-DFT) calculations were carried out to explain the inversion of ExD CPL. This work provided a new insight into the unprecedented handedness controllable ExD CPL, which showcased a new paradigm of the advanced CPL materials.
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