热致晶体
手性(物理)
自组装
发光
四方晶系
材料科学
溶剂
圆二色性
化学
纳米技术
结晶学
光化学
液晶
有机化学
晶体结构
液晶
光电子学
手征对称性
物理
量子力学
Nambu–Jona Lasinio模型
夸克
作者
Keyang Yin,Ning Feng,Nicolas Godbert,Pengyao Xing,Hongguang Li
标识
DOI:10.1021/acs.jpclett.2c03829
摘要
Incorporating carbon dots (CDs) into chiral self-assemblies will endow the system with intriguing optoelectronic, catalytic, and chiroptical activities. Utilization of chiral substituents to rationally manipulate chiral self-assembly of the CDs, however, remains a major challenge. In this work, cholesteryl monoprotected ethylene diamine was used as a precursor to synthesize CDs with a cholesteryl periphery. The rigid, apolar, and chiral cholesteryl facilitates the polarity-sensitive self-assembly of CDs in organic solvents, showing circularly polarized luminescence (CPL) with dissymmetry g-factor at 10–3 grade. Temperature-variable characterizations suggested the formation of thermotropic liquid crystals within a wide temperature range driven by the interdigitation of cholesteryl segments, which further anchor the graphitic CD cores into tetragonal and cubic arrays. Self-assembly in a solvent-free state arouses sufficient chirality transfer and boosted the g-factors to 10–2 order of magnitude. This work unveils multiple and chiral self-assembly of CDs controlled by the cholesteryl substituents, exhibiting variable architectures and tunable CPL.
科研通智能强力驱动
Strongly Powered by AbleSci AI