Thermally-activated chemiluminescent squaraine rotaxane endoperoxide with green emission
作者:Carleton G. Collins、Jeffrey M. Baumes、Bradley D. Smith
DOI:10.1039/c1cc15550d
日期:——
A squaraine rotaxane endoperoxide with a truncated squaraine chromophore undergoes a cycloreversion reaction and emits green light that can be transferred to red acceptor dyes. The results demonstrate that chemiluminescence emission for squaraine rotaxane endoperoxides comes from the excited squaraine inside the rotaxane.
Near-Infrared Croconaine Rotaxanes and Doped Nanoparticles for Enhanced Aqueous Photothermal Heating
作者:Graeme T. Spence、Shun Shang Lo、Chenfeng Ke、Harry Destecroix、Anthony P. Davis、Gregory V. Hartland、Bradley D. Smith
DOI:10.1002/chem.201403315
日期:2014.9.22
particles upon high‐energy laser irradiation, and near‐infrared absorbers such as gold nanoparticles and organic dyes have a range of potential photothermal applications. The favourable photothermal properties of thiophene‐functionalised croconaine dyes were recently discovered. The synthesis and properties of novel croconaine rotaxane and pseudorotaxane architectures capable of efficient photothermal
Macrocyclic Receptor for Precious Gold, Platinum, or Palladium Coordination Complexes
作者:Wenqi Liu、Allen G. Oliver、Bradley D. Smith
DOI:10.1021/jacs.8b04155
日期:2018.6.6
Two macrocyclic tetralactam receptors are shown to selectively encapsulate anionic, square-planar chloride and bromide coordination complexes of gold(III), platinum(II), and palladium(II). Both receptors have a preorganized structure that is complementary to its precious metal guest. The receptors do not directly ligate the guest metal center but instead provide an array of arene π-electron donors
两种大环四内酰胺受体显示出选择性地封装金 (III)、铂 (II) 和钯 (II) 的阴离子、方形平面氯化物和溴化物配位络合物。两种受体都具有与其贵金属客体互补的预先组织的结构。受体不直接连接客体金属中心,而是提供一系列与带正电金属相互作用的芳烃 π 电子供体和与外部带负电配体相互作用的氢键供体。这种独特的超分子识别模式通过六个 X 射线晶体结构来说明,这些晶体结构显示了 AuCl4-、AuBr4-、PtCl4-2 或 Pd2Cl6-2 的受体封装。在有机溶液中,1:1 的缔合常数与在固态中识别的特定超分子特征相关。
Croconaine Rotaxane Dye with 984 nm Absorption: Wavelength-Selective Photothermal Heating
作者:Hannah H. McGarraugh、Wenqi Liu、Braden P. Matthews、Bradley D. Smith
DOI:10.1002/ejoc.201900082
日期:2019.6.10
encapsulates a croconainedye with two thienothiophene flanking units. The new croconainerotaxane 2 exhibits a narrow 984nmabsorption band that is distinct from the 824 nmabsorption of rotaxane 1. Photothermalheating experiments showed that an 830 nm diode laser selectively heats a solution containing rotaxane 1, with no heating of a solution containing rotaxane 2. Conversely, a 980 nm diode laser
Construction of Red Fluorescent Dual Targeting Mechanically Interlocked Molecules for Live Cancer Cell Specific Lysosomal Staining and Multicolor Cellular Imaging
We have designed and synthesized red fluorescent mechanically interlocked molecules with dual targeting functionality for livecancercellspecific active targeting followed by selective internalization and imaging of malignant lysosomes along with real-time tracking, 3D, and multicolor cellular imaging applications.