1
|
Zhang Y, Lei P, Meng T, Deng K, Xiao X, Zeng Q. Coronene guest molecule selectivity in host templates formed by hydrogen bonding and van der Waals forces at liquid/solid interfaces. NEW J CHEM 2023. [DOI: 10.1039/d3nj00382e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
COR guest molecules are selectively adsorbed in the hexagonal cavities in both H6PDB and H6PAB self-assembled systems and preferentially adsorbed in the H6PAB host template in the H6PAB/HPB system.
Collapse
Affiliation(s)
- Yufei Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, China
| | - Peng Lei
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ting Meng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xunwen Xiao
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| |
Collapse
|
2
|
Ba+2 ion trapping using organic submonolayer for ultra-low background neutrinoless double beta detector. Nat Commun 2022; 13:7741. [DOI: 10.1038/s41467-022-35153-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 11/21/2022] [Indexed: 12/15/2022] Open
Abstract
AbstractIf neutrinos are their own antiparticles the otherwise-forbidden nuclear reaction known as neutrinoless double beta decay can occur. The very long lifetime expected for these exceptional events makes its detection a daunting task. In order to conduct an almost background-free experiment, the NEXT collaboration is investigating novel synthetic molecular sensors that may capture the Ba dication produced in the decay of certain Xe isotopes in a high-pressure gas experiment. The use of such molecular detectors immobilized on surfaces must be explored in the ultra-dry environment of a xenon gas chamber. Here, using a combination of highly sensitive surface science techniques in ultra-high vacuum, we demonstrate the possibility of employing the so-called Fluorescent Bicolor Indicator as the molecular component of the sensor. We unravel the ion capture process for these molecular indicators immobilized on a surface and explain the origin of the emission fluorescence shift associated to the ion trapping.
Collapse
|
3
|
Toffoli D, Grazioli C, Monti M, Stener M, Totani R, Richter R, Schio L, Fronzoni G, Cossaro A. Revealing the electronic properties of the B-B bond: the bis-catecholato diboron molecule. Phys Chem Chem Phys 2021; 23:23517-23525. [PMID: 34642728 DOI: 10.1039/d1cp03428f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The electronic properties of a diboron molecule, namely bis(catecholato)diboron (2-(1,3,2-benzodioxaborol-2-yl)-1,3,2-benzodioxaborole) (B2Cat2), have been studied by comparing the results of photoemission (XPS) and near edge X-ray absorption spectroscopy (NEXAFS) experiments with the outcome of DFT calculations. The B 1s, C 1s and O 1s K-edges have been investigated for both the isolated gas phase molecule and the adsorbed one on the Au(111) surface. The main features of the polarized NEXAFS spectra at each of the three edges considered are not significantly affected by the presence of the substrate, with respect to the isolated molecule, indicating that the molecule-gold interaction is weak. Moreover, the comparison between the observed dichroism in the NEXAFS spectra of the adsorbed B2Cat2 and that in the NEXAFS spectra of the isolated molecule has confirmed the orbital symmetry assigned in the gas phase absorption spectra. The transitions to π(B-B) bonding and π*(B-B) anti-bonding final states represent the most relevant probe of the chemistry of the B2Cat2 molecule. We show that their theoretical description requires that the treatment of the relaxation changes among different excited state configurations, which we successfully implemented by using ΔSCF-DFT (ΔSCF) calculations.
Collapse
Affiliation(s)
- D Toffoli
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
| | - C Grazioli
- IOM-CNR, Istituto Officina dei Materiali-CNR, S.S.14, Km 163.5, 34149 Trieste, Italy
| | - M Monti
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
| | - M Stener
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
| | - R Totani
- ISM-CNR, Istituto di Struttura della Materia, LD2 Unit, 34149 Trieste, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - L Schio
- IOM-CNR, Istituto Officina dei Materiali-CNR, S.S.14, Km 163.5, 34149 Trieste, Italy
| | - G Fronzoni
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
| | - A Cossaro
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy. .,IOM-CNR, Istituto Officina dei Materiali-CNR, S.S.14, Km 163.5, 34149 Trieste, Italy
| |
Collapse
|
4
|
Stredansky M, Turco E, Feng Z, Costantini R, Comelli G, Verdini A, Floreano L, Morgante A, Dri C, Cossaro A. On-surface trapping of alkali atoms by crown ethers in ultra high vacuum. NANOSCALE ADVANCES 2019; 1:1721-1725. [PMID: 36134236 PMCID: PMC9419578 DOI: 10.1039/c9na00144a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 04/02/2019] [Indexed: 06/16/2023]
Abstract
Crown ethers, assembled into a regular 2D array via a chemical guest-host recognition process, have been successfully employed to trap sodium atoms on a surface, under ultra-high vacuum conditions.
Collapse
Affiliation(s)
- Matus Stredansky
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Elia Turco
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Zhijing Feng
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Roberto Costantini
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Giovanni Comelli
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Alberto Verdini
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
| | - Luca Floreano
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
| | - Alberto Morgante
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Carlo Dri
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
- Dipartimento di Fisica, Università di Trieste via A. Valerio 2 I-34127 Trieste Italy
| | - Albano Cossaro
- CNR-IOM Laboratorio TASC Basovizza SS-14, km 163.5 I-34012 Trieste Italy
| |
Collapse
|
5
|
Stredansky M, Sala A, Fontanot T, Costantini R, Africh C, Comelli G, Floreano L, Morgante A, Cossaro A. On-surface synthesis of a 2D boroxine framework: a route to a novel 2D material? Chem Commun (Camb) 2018; 54:3971-3973. [DOI: 10.1039/c8cc01372a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The synthesis of a 2D boroxine covalent framework is described, which exhibits promising morphological and electronic properties.
Collapse
Affiliation(s)
- Matus Stredansky
- Dipartimento di Fisica
- Universitá di Trieste
- via A. Valerio 2
- I-34127 Trieste
- Italy
| | - Alessandro Sala
- CNR-IOM Laboratorio TASC
- Basovizza SS-14, km 163.5
- I-34149 Trieste
- Italy
| | - Tommaso Fontanot
- Dipartimento di Fisica
- Universitá di Trieste
- via A. Valerio 2
- I-34127 Trieste
- Italy
| | - Roberto Costantini
- Dipartimento di Fisica
- Universitá di Trieste
- via A. Valerio 2
- I-34127 Trieste
- Italy
| | - Cristina Africh
- CNR-IOM Laboratorio TASC
- Basovizza SS-14, km 163.5
- I-34149 Trieste
- Italy
| | - Giovanni Comelli
- Dipartimento di Fisica
- Universitá di Trieste
- via A. Valerio 2
- I-34127 Trieste
- Italy
| | - Luca Floreano
- CNR-IOM Laboratorio TASC
- Basovizza SS-14, km 163.5
- I-34149 Trieste
- Italy
| | - Alberto Morgante
- Dipartimento di Fisica
- Universitá di Trieste
- via A. Valerio 2
- I-34127 Trieste
- Italy
| | - Albano Cossaro
- CNR-IOM Laboratorio TASC
- Basovizza SS-14, km 163.5
- I-34149 Trieste
- Italy
| |
Collapse
|