Rapid Exciton Transport and Structural Defects in Individual Porphyrinic Metal Organic Framework Microcrystals.

ABSTRACT: To date, spectroscopic characterization of porphyrin-based metal organic frameworks (MOFs) has relied almost exclusively on ensemble techniques, which provide only structurally averaged insight into the functional properties of these promising photochemical platforms. This work employs time-resolved pump-probe microscopy to probe ultrafast dynamics in PCN-222 MOF single crystals. The simultaneous high spatial and temporal resolution of the technique enables the correlation of spectroscopic observables to both inter- and intracrystal structural heterogeneity. The pump-probe measurements show that significant differences in the excited state lifetime exist between individual PCN-222 crystals of an ensemble. On a single PCN-222 crystal, differences in excited state lifetime and photoluminesce

SUBMITTER: Afrin S 

PROVIDER: S-EPMC10885150 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature