Saleh Nidal, Sucre-Rosales Estefanía, Zinna Francesco, Besnard Céline, Vauthey Eric, Lacour Jérôme
Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
Department of Physical Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
Chem Sci. 2024 Apr 2;15(17):6530-6535. doi: 10.1039/d4sc00870g. eCollection 2024 May 1.
The inclusion of boron atoms into chiral π-conjugated systems is an effective strategy to unlock unique chiroptical properties. Herein, the preparation and characterization of a configurationally stable axially-chiral boramidine are reported, showcasing absorption in the UV domain, deep-blue fluorescence ( up to 94%), and |10| and values. Detailed photophysical studies and quantum-chemical calculations clearly elucidate the deactivation pathways of the emissive state to triplet excited states, involving increased spin-orbit coupling between the lowest singlet excited state and an upper triplet state.
将硼原子引入手性π共轭体系是解锁独特手性光学性质的有效策略。本文报道了一种构型稳定的轴向手性硼脒的制备与表征，其在紫外区域有吸收，发出深蓝色荧光（高达94%），并且具有|10|和值。详细的光物理研究和量子化学计算清楚地阐明了发射态到三重激发态的失活途径，这涉及最低单重激发态和较高三重态之间自旋轨道耦合的增加。
