Bright photoactivatable fluorophores for single-molecule imaging

…, BP English, H Choi, AK Muthusamy, BP Mehl… - Nature …, 2016 - nature.com
Small-molecule fluorophores are important tools for advanced imaging experiments. We
previously reported a general method to improve small, cell-permeable fluorophores which …

Energy transfer dynamics in metal− organic frameworks

CA Kent, BP Mehl, L Ma, JM Papanikolas… - Journal of the …, 2010 - ACS Publications
Isomorphous metal−organic frameworks (MOFs) based on {M[4,4′-(HO 2 C) 2 -bpy] 2 bpy}
2+ building blocks (where M = Ru or Os) were designed and synthesized to study the classic …

Direct imaging of free carrier and trap carrier motion in silicon nanowires by spatially-separated femtosecond pump–probe microscopy

…, CW Pinion, DF Zigler, EM Grumstrup, BP Mehl… - Nano …, 2013 - ACS Publications
We have developed a pump–probe microscope capable of exciting a single semiconductor
nanostructure in one location and probing it in another with both high spatial and temporal …

Triplet excitation energy dynamics in metal–organic frameworks

…, DN Beratan, CA Kent, BP Mehl… - The Journal of …, 2013 - ACS Publications
Metal–organic frameworks (MOFs) are appealing candidates for use in energy harvesting
and concentrating because of their high chromophore density and structural tunability. The …

Exciton dynamics and biexciton formation in single-walled carbon nanotubes studied with femtosecond transient absorption spectroscopy

DJ Styers-Barnett, SP Ellison, BP Mehl… - The Journal of …, 2008 - ACS Publications
We used femtosecond transient absorption (TA) spectroscopy to examine the excited state
dynamics of single-walled carbon nanotube (SWNT) bundles embedded in polymer matrices. …

The end is different than the middle: spatially dependent dynamics in ZnO rods observed by femtosecond pump–probe microscopy

BP Mehl, JR Kirschbrown, RL House… - The Journal of …, 2011 - ACS Publications
Pump–probe transient absorption microscopy was used to follow the electron–hole (e–h)
recombination dynamics at different points within individual needle-shaped ZnO rods to …

Pump–probe microscopy: spatially resolved carrier dynamics in ZnO rods and the influence of optical cavity resonator modes

BP Mehl, JR Kirschbrown, MM Gabriel… - The Journal of …, 2013 - ACS Publications
Femtosecond pump–probe microscopy is used to investigate the charge recombination
dynamics at different points within a single needle-shaped ZnO rod. Recombination in the tips of …

Base-induced phototautomerization in 7-hydroxy-4-(trifluoromethyl) coumarin

…, JJ Paul, SE Bettis, SD Hampton, BP Mehl… - The Journal of …, 2012 - ACS Publications
Excited-state proton-transfer dynamics between 7-hydroxy-4-(trifluoromethyl)coumarin and 1-methylimidazole
base in toluene were studied using ultrafast pump–probe and time-…

Direct imaging of optical cavity modes in ZnO rods using second harmonic generation microscopy

BP Mehl, RL House, A Uppal, AJ Reams… - The Journal of …, 2010 - ACS Publications
Images of second harmonic generation (SHG) in needle-shaped ZnO rods obtained from
individual structures show areas of enhanced second harmonic intensity along the longitudinal …

Characterizing the ultrafast charge carrier trapping dynamics in single ZnO rods using two-photon emission microscopy

RL House, BP Mehl, JR Kirschbrown… - The Journal of …, 2011 - ACS Publications
Zinc oxide has emerged as an attractive candidate for a variety of optoelectronic and photonic
applications, due in part to a large second-order nonlinear susceptibility, its wide band gap…