Lai‐Sheng Wang
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View article: Emergence of bulk-like structural features and 2D-to-3D transition in boron nanoclusters
Emergence of bulk-like structural features and 2D-to-3D transition in boron nanoclusters Open
As an electron-deficient element, boron possesses fascinating three-dimensional structures and unconventional chemical bonds. Nanoclusters of boron have also been found to exhibit intriguing structural properties, observed to have predomin…
View article: PB and AsB triple bonds in the linear PB<sub>2</sub>O<sup>−</sup> and AsB<sub>2</sub>O<sup>−</sup> species
PB and AsB triple bonds in the linear PB<sub>2</sub>O<sup>−</sup> and AsB<sub>2</sub>O<sup>−</sup> species Open
EB 2 O − (E = P, As) type of clusters are found to have [EB–BO] − closed-shell linear structures with EB triple bonds.
View article: Probing the electronic structure and dipole-bound state of the 7-azaindolide anion
Probing the electronic structure and dipole-bound state of the 7-azaindolide anion Open
High-resolution non-resonant and resonant photoelectron and photodetachment spectroscopies are used to characterize the 7-azaindolide anion cryogenically-cooled in an ion trap.
View article: Boron Buckminsterfullerene
Boron Buckminsterfullerene Open
Fullerenes, spherical molecules made entirely of carbon atoms, have played a foundational role in the birth of nanoscience. Despite extensive research, however, comparable structures composed of other elements remain elusive, highlighting …
View article: On the remarkable resistance to oxidation by the Bi <sub>18</sub> <sup>−</sup> cluster
On the remarkable resistance to oxidation by the Bi <sub>18</sub> <sup>−</sup> cluster Open
The reactivity of Bi n − clusters ( n = 2 to 30) with O 2 is found to display even-odd alternations. The open-shell even-sized Bi n − clusters are more reactive than the closed-shell odd-sized clusters, except Bi 18 − , which exhibits no o…
View article: Probing the dynamics and bottleneck of the key atmospheric SO <sub>2</sub> oxidation reaction by the hydroxyl radical
Probing the dynamics and bottleneck of the key atmospheric SO <sub>2</sub> oxidation reaction by the hydroxyl radical Open
SO 2 (Sulfur dioxide) is the major precursor to the production of sulfuric acid (H 2 SO 4 ), contributing to acid rain and atmospheric aerosols. Sulfuric acid formed from SO 2 generates light-reflecting sulfate aerosol particles in the atm…
View article: Searching for stable copper borozene complexes in CuB<sub>7</sub><sup>−</sup> and CuB<sub>8</sub><sup>−</sup>
Searching for stable copper borozene complexes in CuB<sub>7</sub><sup>−</sup> and CuB<sub>8</sub><sup>−</sup> Open
We report the experimental observation and spectroscopic characterization, and structure and bonding analyses of copper–borozene complexes.
View article: The Structures and Bonding of Bismuth-Doped Boron Clusters: BiB4− and BiB5−
The Structures and Bonding of Bismuth-Doped Boron Clusters: BiB4− and BiB5− Open
We present an investigation on the structures and chemical bonding of two Bi-doped boron clusters BiBn− (n = 4, 5) using photoelectron spectroscopy and theoretical calculations. The electron affinities of BiB4 and BiB5 are measured to be 2…
View article: PROBING DIPOLE-BOUND STATES USING HIGH-RESOLUTION RESONANT PHOTOELECTRON IMAGING OF CRYOGENICALLY-COOLED ANIONS
PROBING DIPOLE-BOUND STATES USING HIGH-RESOLUTION RESONANT PHOTOELECTRON IMAGING OF CRYOGENICALLY-COOLED ANIONS Open
Negative ions do not possess Rydberg states, but polar anions may have diffuse dipole-bound states just below the detachment threshold, analogous to Rydberg states of neutral molecules.Excitation to vibrational levels of the dipolebound st…
View article: Cryogenic Photodetachment Spectroscopy and High-Resolution Resonant Photoelectron Imaging of Cold <i>para</i>-Ethylphenolate Anions
Cryogenic Photodetachment Spectroscopy and High-Resolution Resonant Photoelectron Imaging of Cold <i>para</i>-Ethylphenolate Anions Open
Valence-bound molecular anions with polar neutral cores (μ > 2.5 D) can support highly diffuse dipole-bound states (DBSs) as electronically excited states just below the detachment threshold. Such weakly bound nonvalence excited states hav…
View article: 2021 JCP Emerging Investigator Special Collection
2021 JCP Emerging Investigator Special Collection Open
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View article: Photoelectron imaging of cryogenically cooled BiO− and BiO2− anions
Photoelectron imaging of cryogenically cooled BiO− and BiO2− anions Open
The advent of ion traps as cooling devices has revolutionized ion spectroscopy as it is now possible to efficiently cool ions vibrationally and rotationally to levels where truly high-resolution experiments are now feasible. Here, we repor…
View article: USING HIGH-RESOLUTION PHOTOELECTRON IMAGING TO PROBE THE SPECTROSCOPY OF CRYOGENICALLY COOLED AZOLIDE MOLECULES
USING HIGH-RESOLUTION PHOTOELECTRON IMAGING TO PROBE THE SPECTROSCOPY OF CRYOGENICALLY COOLED AZOLIDE MOLECULES Open
View article: PHOTOELECTRON SPECTROSCOPIC STUDY ON DIPOLE-BOUND STATES: INTRAMOLECULAR ELECTRIC FIELD INDUCED ELECTRONIC CORRELATION
PHOTOELECTRON SPECTROSCOPIC STUDY ON DIPOLE-BOUND STATES: INTRAMOLECULAR ELECTRIC FIELD INDUCED ELECTRONIC CORRELATION Open
View article: Boron-lead multiple bonds in the PbB2O– and PbB3O2– clusters
Boron-lead multiple bonds in the PbB2O– and PbB3O2– clusters Open
View article: Observation of Core-Excited Dipole-Bound States
Observation of Core-Excited Dipole-Bound States Open
Polar molecules can bind an electron in a diffuse orbital due to the charge-dipole interaction. Electronic excited states of polar molecules can also bind an electron to form core-excited dipole-bound states (DBSs), analogous to core-excit…
View article: Probing the Nature of the Transition-Metal-Boron Bonds and Novel Aromaticity in Small Metal-Doped Boron Clusters Using Photoelectron Spectroscopy
Probing the Nature of the Transition-Metal-Boron Bonds and Novel Aromaticity in Small Metal-Doped Boron Clusters Using Photoelectron Spectroscopy Open
Photoelectron spectroscopy combined with quantum chemistry has been a powerful approach to elucidate the structures and bonding of size-selected boron clusters (B n − ), revealing a prevalent planar world that laid the foundation for borop…
View article: Probing the electronic structure and spectroscopy of pyrrolyl and imidazolyl radicals using high-resolution photoelectron imaging of cryogenically cooled anions
Probing the electronic structure and spectroscopy of pyrrolyl and imidazolyl radicals using high-resolution photoelectron imaging of cryogenically cooled anions Open
Photodetachment spectroscopy and high-resolution photoelectron imaging of cryogenically cooled pyrrolide and imidazolide anions are used to probe pyrrolyl and imidazolyl radicals.
View article: The smallest 4f-metalla-aromatic molecule of cyclo-PrB<sub>2</sub><sup>−</sup> with Pr–B multiple bonds
The smallest 4f-metalla-aromatic molecule of cyclo-PrB<sub>2</sub><sup>−</sup> with Pr–B multiple bonds Open
We report the smallest 4f-metalla-aromatic molecule of PrB 2 − exhibiting σ and π double aromaticity and multiple Pr–B bond characters.
View article: Resonant two-photon photoelectron imaging and adiabatic detachment processes from bound vibrational levels of dipole-bound states
Resonant two-photon photoelectron imaging and adiabatic detachment processes from bound vibrational levels of dipole-bound states Open
Anions cannot have Rydberg states, but anions with polar neutral cores can support highly diffuse dipole-bound states (DBSs) as a class of interesting electronic excited states below the electron detachment threshold.
View article: 2020 JCP Emerging Investigator Special Collection
2020 JCP Emerging Investigator Special Collection Open
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View article: Monovalent lanthanide(I) in borozene complexes
Monovalent lanthanide(I) in borozene complexes Open
Lanthanide (Ln) elements are generally found in the oxidation state +II or +III, and a few examples of +IV and +V compounds have also been reported. In contrast, monovalent Ln(+I) complexes remain scarce. Here we combine photoelectron spec…
View article: Observation of a dipole-bound excited state in 4-ethynylphenoxide and comparison with the quadrupole-bound excited state in the isoelectronic 4-cyanophenoxide
Observation of a dipole-bound excited state in 4-ethynylphenoxide and comparison with the quadrupole-bound excited state in the isoelectronic 4-cyanophenoxide Open
Negative ions do not possess Rydberg states but can have Rydberg-like nonvalence excited states near the electron detachment threshold, including dipole-bound states (DBSs) and quadrupole-bound states (QBSs). While DBSs have been studied e…
View article: Probing the Dipole-Bound State in the 9-Phenanthrolate Anion by Photodetachment Spectroscopy, Resonant Two-Photon Photoelectron Imaging, and Resonant Photoelectron Spectroscopy
Probing the Dipole-Bound State in the 9-Phenanthrolate Anion by Photodetachment Spectroscopy, Resonant Two-Photon Photoelectron Imaging, and Resonant Photoelectron Spectroscopy Open
Valence-bound anions with a dipolar core can support dipole-bound states (DBSs) below the electron detachment threshold. The highly diffuse DBS observed is usually of σ symmetry with an s-like orbital. Recently, a π-type DBS was observed e…
View article: Photodetachment spectroscopy and resonant photoelectron imaging of cryogenically cooled 1-pyrenolate
Photodetachment spectroscopy and resonant photoelectron imaging of cryogenically cooled 1-pyrenolate Open
We report an investigation of the 1-pyrenolate anion (PyO−) and the 1-pyrenoxy radical (PyO) using photodetachment spectroscopy and resonant photoelectron imaging of cryogenically cooled anions. The electron affinity of PyO is measured to …
View article: Transition-metal-like bonding behaviors of a boron atom in a boron-cluster boronyl complex [(η<sup>7</sup>-B<sub>7</sub>)-B-BO]<sup>−</sup>
Transition-metal-like bonding behaviors of a boron atom in a boron-cluster boronyl complex [(η<sup>7</sup>-B<sub>7</sub>)-B-BO]<sup>−</sup> Open
The global minimum of the B9O− cluster is found to have an umbrella-like structure, where the central B atom exhibits transition-metal-like bonding properties, coordinated by a η7-B7 ligand on on…
View article: Observation of a Symmetry-Forbidden Excited Quadrupole-Bound State
Observation of a Symmetry-Forbidden Excited Quadrupole-Bound State Open
We report the observation of a symmetry-forbidden excited quadrupole-bound state (QBS) in the tetracyanobenzene anion (TCNB-) using both photoelectron and photodetachment spectroscopies of cryogenically-cooled anions. The electr…
View article: JCP Emerging Investigator Special Collection 2019
JCP Emerging Investigator Special Collection 2019 Open
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View article: Polarization of Valence Orbitals by the Intramolecular Electric Field from a Diffuse Dipole-Bound Electron
Polarization of Valence Orbitals by the Intramolecular Electric Field from a Diffuse Dipole-Bound Electron Open
The diffuse electron in a dipole-bound state is spatially well separated from the valence electrons and is known to have negligible effects on the dipole-bound state's molecular structure. Here, we show that a dipole-bound state is observe…
View article: Observation of a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>π</mml:mi></mml:math>-Type Dipole-Bound State in Molecular Anions
Observation of a -Type Dipole-Bound State in Molecular Anions Open
We report the observation of a π-type dipole-bound state (π-DBS) in cryogenically cooled deprotonated 9-anthrol molecular anions (9AT^{-}) by resonant two-photon photoelectron imaging. A DBS is observed 191 cm^{-1} (0.0237 eV) below the de…