密度泛函理论
轨道能级差
荧光
深铬移
纳米颗粒
合理设计
化学
计算化学
材料科学
纳米技术
分子
物理
有机化学
光学
作者
Jaehyun Park,Ji Hye Lee,Bumhee Lim,Na Keum Lee,Gyuseok Sim,Soojung Ryu,Ikyon Kim,Hyonseok Hwang,Jeeyeon Lee
标识
DOI:10.1002/cptc.202000099
摘要
Abstract In this study, we designed and synthesized novel 6‐(thiophen‐2‐yl) indolizino[3,2‐ c ]quinolines (IQs) guided by density functional theory (DFT) calculations and explored the optical properties of the IQ derivatives together with fractional atomic orbital contribution (FAOC) analysis. In accordance with the DFT predictions, the designed compound, IQ‐C9 , with a methoxycarbonyl (MC) group attached to the C9 position of the IQ scaffold, displayed improved fluorescence quantum yields (QY) in solution and in the solid state along with bathochromic shifts compared to previous analogues. TEM images demonstrated that IQ‐C9 forms well‐defined nanoparticle structures (dimensions: 20×50 nm, aspect ratio: 2.3) in aqueous solution. Confocal images of IQ‐C9 ‐treated MCF7 cells revealed colocalization of IQ‐C9 with lipid droplets, highly dynamic subunits within cells involved in various metabolic disorders and cancers. Our results demonstrated that the analyses based on the FAOC coefficients and molecular orbital (MO) energy levels can be used as a computational method to predict spectral shifts for fluorophores and to design novel fluorescent probes for tracking dynamic cellular processes.
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