Combined high-pressure spectroscopy and crystallography of spatially isolated chromophores in metal-organic frameworks

当发色团作为连接体并入金属有机骨架（MOF）中时，其光物理性质可受骨架结构施加的几何限制或通过将相互作用分子引入孔中而影响。高压研究使受控的地球物理后果，增量变化的局部环境或构象进行观察和相关的结构数据。该项目将涉及测量MOFs的吸收和发射光谱作为金刚石压砧单元中压力的函数，并将这些光谱与在相同条件下确定的X射线结构相关联。控制构象畸变和发色团-溶剂相互作用的影响，对光致异构化（photoswitching）和分子转子的philophysics将进行调查，在传感应用的背景下。

When a chromophore is incorporated as a linker in a metal-organic framework (MOF), its photophysical properties may be influenced by geometric restrictions imposed by the framework structure or through the introduction of interacting molecules into the pores. High-pressure studies enable the photophysical consequences of controlled, incremental changes in local environment or conformation to be observed and correlated with structural data. The project will involve the measurement of absorption and emission spectra of MOFs as a function of pressure in a diamond anvil cell, and correlating these with X-ray structures determined under the same conditions. The effects of controlled conformational distortion and chromophore-solvent interactions on photoismerisation (photoswitching) and the photophysics of molecular rotors will be investigated, in the context of sensing applications.