摘要
A novel Λ-shaped compound DMCEM based on Trger′s base was designed,synthesized and its photophysical properties were examined in detail.DMCEM exhibited an aggregation-induced emission enhancement(AIEE) effect and emitted strong red fluorescence in solid states and faint fluorescence in the dilute solution.Nanocrystals of DMCEM ranging from 60 to 160 nm with well-defined spherical shape were prepared.The DMCEM naoparticles possess special size dependence on their optical properties.The red shift of the absorption and the blue shift of the emission with the increase in the particle size may be attributed to the increased rigidification of the crystal lattice and the associated decrease of vibrational relaxation.
A novel Λ-shaped compound DMCEM based on Trger′s base was designed,synthesized and its photophysical properties were examined in detail.DMCEM exhibited an aggregation-induced emission enhancement（AIEE） effect and emitted strong red fluorescence in solid states and faint fluorescence in the dilute solution.Nanocrystals of DMCEM ranging from 60 to 160 nm with well-defined spherical shape were prepared.The DMCEM naoparticles possess special size dependence on their optical properties.The red shift of the absorption and the blue shift of the emission with the increase in the particle size may be attributed to the increased rigidification of the crystal lattice and the associated decrease of vibrational relaxation.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第5期855-857,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:50721002)
山东省自然科学基金(批准号:ZR2009FQ029)
山东大学自主创新基金(批准号:2009TS040)资助
关键词
Λ-型异弗乐酮衍生物
聚集态荧光增强效应
有机纳米粒子
Λ-Shaped iso-phoronederivative
Aggregation-induced emission enhancement effect
Organic-nanoparticle
