scholarly journals Capturing coherent vibrational dynamics following molecular rearrangement with ultrafast pump-probe spectroscopy

2020 ◽  
Author(s):  
Katharine Tibbetts
Keyword(s):  
Molecular Rearrangement ◽  
Vibrational Dynamics ◽  
Pump Probe ◽  
Probe Spectroscopy

β-Isocyanoalanine as an IR probe: comparison of vibrational dynamics between isonitrile and nitrile-derivatized IR probes

2015 ◽  
Vol 17 (17) ◽  
pp. 11770-11778 ◽  
Author(s):  
Michał Maj ◽  
Changwoo Ahn ◽  
Dorota Kossowska ◽  
Kwanghee Park ◽  
Kyungwon Kwak ◽  
...  
Keyword(s):  
Vibrational Properties ◽  
Vibrational Dynamics ◽  
Pump Probe ◽  
Probe Spectroscopy

An infrared (IR) probe based on isonitrile (NC)-derivatized alanine 1 was synthesized and the vibrational properties of its NC stretching mode were investigated using FTIR and femtosecond IR pump–probe spectroscopy.

Vibrational Dynamics of Hydrogen-Bonded Complexes in Solutions Studied with Ultrafast Infrared Pump−Probe Spectroscopy

2009 ◽  
Vol 42 (9) ◽  
pp. 1259-1269 ◽  
Author(s):  
Motohiro Banno ◽  
Kaoru Ohta ◽  
Sayuri Yamaguchi ◽  
Satori Hirai ◽  
Keisuke Tominaga
Keyword(s):  
Vibrational Dynamics ◽  
Pump Probe ◽  
Probe Spectroscopy ◽  
Bonded Complexes ◽  
Hydrogen Bonded ◽  
Ultrafast Infrared

scholarly journals Coherent vibrational dynamics reveals lattice anharmonicity in organic–inorganic halide perovskite nanocrystals

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tushar Debnath ◽  
Debalaya Sarker ◽  
He Huang ◽  
Zhong-Kang Han ◽  
Amrita Dey ◽  
...  
Keyword(s):  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Vibrational Dynamics ◽  
Pump Probe ◽  
Perovskite Nanocrystals ◽  
Probe Spectroscopy ◽  
Combination Bands ◽  
Intrinsic Anharmonicity ◽  
Lead Halide

AbstractThe halide ions of organic-inorganic hybrid perovskites can strongly influence the interaction between the central organic moiety and the inorganic metal halide octahedral units and thus their lattice vibrations. Here, we report the halide-ion-dependent vibrational coherences in formamidinium lead halide (FAPbX3, X = Br, I) perovskite nanocrystals (PNCs) via the combination of femtosecond pump–probe spectroscopy and density functional theory calculations. We find that the FAPbX3 PNCs generate halide-dependent coherent vibronic wave packets upon above-bandgap non-resonant excitation. More importantly, we observe several higher harmonics of the fundamental modes for FAPbI3 PNCs as compared to FAPbBr3 PNCs. This is likely due to the weaker interaction between the central FA moiety and the inorganic cage for FAPbI3 PNCs, and thus the PbI64− unit can vibrate more freely. This weakening reveals the intrinsic anharmonicity in the Pb-I framework, and thus facilitating the energy transfer into overtone and combination bands. These findings not only unveil the superior stability of Br–based PNCs over I–based PNCs but are also important for a better understanding of their electronic and polaronic properties.

Vibrational dynamics of acetate in D2O studied by infrared pump–probe spectroscopy

2012 ◽  
Vol 14 (18) ◽  
pp. 6359 ◽  
Author(s):  
Motohiro Banno ◽  
Kaoru Ohta ◽  
Keisuke Tominaga
Keyword(s):  
Vibrational Dynamics ◽  
Pump Probe ◽  
Probe Spectroscopy

Vibrational dynamics of benzoic acid in nonpolar solvents studied by subpicosecond infrared pump–probe spectroscopy

2008 ◽  
Vol 462 (4-6) ◽  
pp. 238-242 ◽  
Author(s):  
Sayuri Yamaguchi ◽  
Motohiro Banno ◽  
Kaoru Ohta ◽  
Keisuke Tominaga ◽  
Tomoyuki Hayashi
Keyword(s):  
Benzoic Acid ◽  
Vibrational Dynamics ◽  
Pump Probe ◽  
Nonpolar Solvents ◽  
Probe Spectroscopy

scholarly journals Vibrational Dynamics of Hydrogen-Bonded Complexes Studied by Infrared Pump-Probe Spectroscopy

2008 ◽  
Vol 36 (APLS) ◽  
pp. 1024-1027 ◽  
Author(s):  
Sayuri YAMAGUCHI ◽  
Satori HIRAI ◽  
Kohji IKESHIMA ◽  
Motohiro BANNO ◽  
Kaoru OHTA ◽  
...  
Keyword(s):  
Vibrational Dynamics ◽  
Pump Probe ◽  
Probe Spectroscopy ◽  
Bonded Complexes ◽  
Hydrogen Bonded
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