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Ahsin A, Qamar A, Lu Q, Bian W. Theoretically designed M@diaza[2.2.2]cryptand complexes: the role of non-covalent interactions in promoting NLO properties of organic electrides. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2024; 25:2357064. [PMID: 38835630 PMCID: PMC11149575 DOI: 10.1080/14686996.2024.2357064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/14/2024] [Indexed: 06/06/2024]
Abstract
Organic excess electron compounds with significant nonlinear optical (NLO) properties are widely employed in optoelectronic applications. Herein, single-alkali metals with diaza[2.2.2] cryptand (M@crypt,M=Li, Na, and K) are investigated for optoelectronic and NLO properties by using the density functional theory. Thermodynamic and kinetic stabilities of present complexes are computed through interaction energy (Eint) and ab-initio molecular dynamic (AIMD) simulations. M@crypt complexes carry excess electrons and mimic molecular electrides. Quantum theory of atoms in molecules (QTAIM) analysis and reduced density gradient (RDG) spectra demonstrate the roles of the weak van der Waals (vdW) interactions between metal and complexant. The remarkable hyperpolarizability (βo) value up to 1.41 × 106 au may be credited to the presence of loosely bound excess electrons. The hyper Rayleigh scattering hyperpolarizability (βHRS) is recorded up to 1.31 × 106 au for the K@crypt. Furthermore, frequency-dependent first-order and second-order hyperpolarizability is more prominent at the applied frequency of ω = 0.042823 au. The electron localizing function (ELF) and localized orbital locator (LOL) analysis further disclose the nature of interaction between alkali metal and complexant. The TD-DFT method is adopted to get excited state parameters and absorbance properties. An electron density difference map (EDDM) is exploited to evaluate the orbital contributions in excited states. Hence, the studied electride may become a promising candidate for NLO materials. We anticipate that the present work will provide insight into further development of molecular electride for optoelectronic applications.
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Affiliation(s)
- Atazaz Ahsin
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Aamna Qamar
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Qing Lu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Wensheng Bian
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
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Huang J, Wang YF, Yang K, Zhang W, Wang ZJ, Liu X, Li ZR. Superalkali-alkaline earthide ion pairs of δ+(AM-HMHC)-AM' δ- (AM = Li, Na and K; AM' = Be, Mg and Ca) possessing large NLO responses and excellent electronic stabilities and alkalide characteristics: a DFT study. Phys Chem Chem Phys 2024; 26:4702-4715. [PMID: 38251937 DOI: 10.1039/d3cp04627c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
To identify superalkali-alkaline earthide ion pairs, it's theoretically shown that, as a novel class of excess electron superalkali compounds, both chair and boat forms of (AM-HMHC)-AM' (AM = Li, Na, and K; AM' = Be, Mg, and Ca; HMHC = 1,4,7,10,13,16-hexamethyl-1,4,7,10,13,16-hexaazacyclooctadecane) are good candidates. An attractive superalkali-alkaline earthide ion pair in δ+(AM-HMHC)-AM'δ- is firstly exhibited, which possesses alkaline-earthide characteristics and nonlinear optical response superior to similar M+(calix[4]pyrrole)M'- (M = Li, Na, and K; M' = Be, Mg, and Ca) with high stability. The electronic and vibrational second order hyperpolarizabilities and the frequency-dependent first hyperpolarizabilities of δ+(AM-HMHC)-AM'δ- are presented. For each pair of (AM-HMHC)-AM', the boat conformation is preferred to its chair one in the case of Hyper-Rayleigh scattering response (βHRS). These alkaline earthides suggest prominently high βHRS up to 2.59 × 104 a.u. (boat forms of δ+(Na-HMHC)-Caδ-). We expect that this work will inspire the preparation and characterization of these new alkaline earthides as high-performance NLO materials.
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Affiliation(s)
- Jiangen Huang
- Jiangxi Province Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering. Jinggangshan University, Ji'an, Jiangxi 343009, P. R. China.
| | - Yin-Feng Wang
- Jiangxi Province Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering. Jinggangshan University, Ji'an, Jiangxi 343009, P. R. China.
| | - Kai Yang
- Jiangxi Province Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering. Jinggangshan University, Ji'an, Jiangxi 343009, P. R. China.
| | - Wen Zhang
- Jiangxi Province Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering. Jinggangshan University, Ji'an, Jiangxi 343009, P. R. China.
| | - Zhi-Jun Wang
- Jiangxi Province Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering. Jinggangshan University, Ji'an, Jiangxi 343009, P. R. China.
| | - Xuexia Liu
- School of Forensic Medicine, Wannan Medical College, Wuhu 241002, Anhui, P. R. China.
| | - Zhi-Ru Li
- Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P. R. China.
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Sohaib M, Sajid H, Sarfaraz S, Hamid MHSA, Gilani MA, Ans M, Mahmood T, Muhammad S, Alkhalifah MA, Sheikh NS, Ayub K. Enhanced nonlinear optical response of alkalides based on stacked Janus all- cis-1,2,3,4,5,6-hexafluorocyclohexane. Heliyon 2023; 9:e19325. [PMID: 37662734 PMCID: PMC10474417 DOI: 10.1016/j.heliyon.2023.e19325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 08/03/2023] [Accepted: 08/18/2023] [Indexed: 09/05/2023] Open
Abstract
Significant efforts are continuously exerted by the scientific community to explore new strategies to design materials with high nonlinear optical responses. An effective approach is to design alkalides based on Janus molecules. Herein, we present a new approach to remarkably boost the NLO response of alkalides by stacking the Janus molecules. Alkalides based on stacked Janus molecule, M-n-M' (where n = 2 & 3 while M and M' are Li/Na/K) are studied for structural, energetic, electrical, and nonlinear optical properties. The thermodynamic stability of the designed complexes is confirmed by the energetic stabilities, which range between -14.07 and -28.77 kcal/mol. The alkalide character of alkali metals-doped complexes is confirmed by the NBO charge transfer and HOMO(s) densities. The HOMO densities are located on the doped alkali metal atoms, indicating their alkalide character. The absorptions in UV-Vis and near IR region confirm the deep ultraviolet transparency of the designed complexes. The maximum first static and dynamic hyperpolarizabilities of 5.13 × 107 and 6.6 × 106 au (at 1339 nm) confirm their high NLO response, especially for K-2-M' complexes. The NLO response of alkalides based on stacked Janus molecules is 1-2 orders of magnitude higher than the alkalide based on Janus monomer. The high values of dc-Kerr and electric field-induced response e.g., max ∼107 and 108 au, respectively have been obtained. These findings suggest that our designed complexes envision a new insight into the rational design of stable high NLO performance materials.
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Affiliation(s)
- Muhammad Sohaib
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | - Hasnain Sajid
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK
| | - Sehrish Sarfaraz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | | | - Mazhar Amjad Gilani
- Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore-54600, Pakistan
| | - Muhammad Ans
- Department of Chemistry, University of Agriculture, Faisalabad, Punjab, Pakistan
| | - Tariq Mahmood
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
- Department of Chemistry, College of Science, University of Bahrain, P. O. Box 32038, Bahrain
| | - Shabbir Muhammad
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia
| | - Mohammed A. Alkhalifah
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Nadeem S. Sheikh
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
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Ahsan A, Fayyaz F, Sarfaraz S, Hamid MHS, Keasberry NA, Ayub K, Sheikh NS. A three orders of magnitude increase in nonlinear optical response by external electric field on Cryptand[2.2.2] (C222) based alkaline earthides. Heliyon 2023; 9:e17610. [PMID: 37455946 PMCID: PMC10338364 DOI: 10.1016/j.heliyon.2023.e17610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/22/2023] [Accepted: 06/22/2023] [Indexed: 07/18/2023] Open
Abstract
A new series of alkaline earthides based on Cryptand [2.2.2] (C222) containing nine complexes is designed by carefully placing alkali metals and alkaline earth metals inside and outside the C222 complexant, respectively i.e., M1(C222)M2 (M1 = Li, Na, K; M2 = Be, Mg, Ca). The designed complexes are reasonably stable both electronically and thermodynamically, as revealed through their vertical ionization potentials (VIPs) and interaction energies, respectively. Moreover, the true alkaline earthide nature of the complexes is confirmed through NBO and FMO analyses showing the negative charges and HOMOs over the alkaline earth metals, respectively. The further validity of true earthide characteristic is represented graphically by the spectra of partial density of states (PDOS). HOMO-LUMO gaps of the compounds are also very small (from 2.23 to 2.83 eV) when compared with pure cage's (C222) H-L gap i.e., 5.63 eV. All these features award these complexes with very small values of transition energies (ΔE) ranging from 0.68 to 2.06 eV ultimately resulting in remarkably high hyperpolarizability values up to 2.7 × 105 au (for Na+(C222)Mg-). Furthermore, applying external electric field (EEF) on the complexes enhances hyperpolarizability further. A remarkable increase of 1000 folds has been seen when hyperpolarizability of K+(C222)Ca- is calculated after EEF application i.e., from 8.79 × 104 au to 2.48 × 107 au; when subjected to 0.001 au external electric field.
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Affiliation(s)
- Annum Ahsan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | - Faiza Fayyaz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | - Sehrish Sarfaraz
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | - Malai Haniti S.A. Hamid
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Brunei Darussalam
| | - Natasha A. Keasberry
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Brunei Darussalam
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, KPK, 22060, Pakistan
| | - Nadeem S. Sheikh
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Brunei Darussalam
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Alkhalifah MA, Sheikh NS, Al-Faiyz YSS, Bayach I, Ludwig R, Ayub K. Rational Design, Stabilities and Nonlinear Optical Properties of Non-Conventional Transition Metalides; New Entry into Nonlinear Optical Materials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093447. [PMID: 37176328 PMCID: PMC10180138 DOI: 10.3390/ma16093447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/14/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023]
Abstract
Electronic and nonlinear optical properties of endohedral metallofullerenes are presented. The endohedral metallofullerenes contain transition metal encapsulated in inorganic fullerenes X12Y12 (X = B, Al & Y = N, P). The endohedral metallofullerenes (endo-TM@X12Y12) possess quite interesting geometric and electronic properties, which are the function of the nature of the atom and the size of fullerene. NBO charge and frontier molecular orbital analyses reveal that the transition metal encapsulated Al12N12 fullerenes (endo-TM@Al12N12) are true metalides when the transition metals are Ni, Cu and Zn. Endo-Cr@Al12N12 and endo-Co@Al12N12 are at the borderline between metalides and electrides with predominantly electride characteristics. The other members of the series are excess electron systems, which offer interesting electronic and nonlinear optical properties. The diversity of nature possessed by endo-TM@Al12N12 is not prevalent for other fullerenes. Endo-TM@Al12P12 are true metalides when the transition metals are (Cr-Zn). HOMO-LUMO gaps (EH-L) are reduced significantly for these endohedral metallofullerenes, with a maximum percent decrease in EH-L of up to 70%. Many complexes show odd-even oscillating behavior for EH-L and dipole moments. Odd electron species contain large dipole moments and small EH-L, whereas even electron systems have the opposite behavior. Despite the decrease in EH-L, these systems show high kinetic and thermodynamic stabilities. The encapsulation of transition metals is a highly exergonic process. These endo-TM@X12Y12 possess remarkable nonlinear optical response in which the first hyperpolarizability reaches up to 2.79 × 105 au for endo-V@Al12N12. This study helps in the comparative analysis of the potential nonlinear optical responses of electrides, metalides and other excess electron systems. In general, the potential nonlinear optical response of electrides is higher than metalides but lower than those of simple excess electron compounds. The higher non-linear optical response and interesting electronic characteristics of endo-TM@Al12N12 complexes may be promising contenders for potential NLO applications.
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Affiliation(s)
- Mohammed A Alkhalifah
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Nadeem S Sheikh
- Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei
| | - Yasair S S Al-Faiyz
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Imene Bayach
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Ralf Ludwig
- University of Rostock, Institute of Chemistry, Physical and Theoretical Chemistry, Albert-Einstein-Straße 27, 18059 Rostock, Germany
- Department of Science and Technology of Life, Light and Matter, Faculty of Interdisciplinary Research, University of Rostock, 18059 Rostock, Germany
- Leibniz-Institut für Katalyse an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan
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Dong H, Feng Y, Bu Y. Electron Presolvation in Tetrahydrofuran-Incorporated Supramolecular Sodium Entities. J Phys Chem A 2023; 127:1402-1412. [PMID: 36748233 DOI: 10.1021/acs.jpca.2c06944] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Alkali metal atoms can repopulate their valence electrons toward solvation due to impact from solvents or microsurroundings and provide the remaining alkali metal cations for coordinating with a variety of specific solvents, forming various electron-expanded complexes or solvated ionic pairs with special interactions. Such special solute-solvent interactions not only affect their electronic structures but also enable the formation of entirely new species. Taking Na(THF)n (n = 1-6, THF = tetrahydrofuran) and Na2@THF complexes as typical representatives, density functional theory calculations are carried out to explore the solvation of a sodium atom and its dimer in THF and characterize their complexes as solvent-incorporated supramolecular entities and particularly valence electron presolvation due to their interaction with solvent THF. Electron presolvation is caused by the Pauli repulsion between THF containing a coordinating O atom with a lone pair of electrons and the alkali metal Na or Na2 containing valence electrons, and THF coordination to them forces their valence electrons to redistribute, which can be easily realized in such solvents. Compared with strongly bound valance electrons of alkali metal atoms, THF coordination enables Na or Na2 electrons to exhibit much more active states (i.e., the presolvated states) featuring small vertical detachment energies of electrons and distorted diffuse distributions in the frames of the generally structured metal cation complexes, acting as the electron-expanded chemical entities. Furthermore, the degree of electron diffusion and the polarity of the Na-Na bond are proportional to the coordination number (n) and the coordination number difference (Δn) between two Na centers in Na2@THF. The unique properties of such entities are also discussed. This work offers a theoretical support to the supramolecular entities formed by alkali-metal atoms or their dimers with ligands containing O or N and uncovers the unique electron presolvation phenomena and also enriches our understanding of the novel metal atom complexes.
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Affiliation(s)
- Hui Dong
- School of Chemistry and Chemical Engineering, Shandong University, Jinan250100, P. R. China
| | - Yiwei Feng
- School of Chemistry and Chemical Engineering, Shandong University, Jinan250100, P. R. China
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan250100, P. R. China
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Ahsan F, Ayub K. Transition metalides based on facially polarized all- cis-1,2,3,4,5,6-hexafluorocyclohexane - a new class of high performance second order nonlinear optical materials. Phys Chem Chem Phys 2023; 25:4732-4742. [PMID: 36662154 DOI: 10.1039/d2cp04842f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Continuous attempts are being made to discover new approaches to design materials with extraordinary nonlinear optical responses. Herein, for the first time, we report the geometric, electronic, and nonlinear optical properties of novel Janus transition metalides AM-J-TM (where AM = Li, Na and K, and TM = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) containing alkali metals as a source of excess electrons for transition metals to generate metalides. The Janus organic complexant used for the study is all cis 1,2,3,4,5,6-hexafluorocyclohexane F6C6H6 (J). These complexes contain the unique involvement of alkali metals (AM = Li, Na and K) as a source of excess electrons, which significantly affects the hyperpolarizability values of the resulting transition metalides. The NBO analysis reveals the charge transfer from alkali metals to the transition metals, thereby confirming the metalide behavior of the complexes. Moreover, the metalide nature of these complexes is validated through frontier molecular orbital (FMO) analysis. The values of interaction energies, vertical ionization potential (VIP) and vertical electron affinity (VEA) illustrate the stability of the metalide complexes. Ultimately, the hyperpolarizability values confirm the excellent nonlinear optical response of the designed transition metalides. The remarkable static first hyperpolarizability (β0) response up to 4 × 108 a.u. is observed for complexes of vanadium. Similarly, the complexes of AM-J-Mn and Li/Na-J-Sc show significantly high NLO response. These compounds besides providing a new entry into excess electron compounds will also pave the way for the design and synthesis of further novel NLO materials.
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Affiliation(s)
- Faiza Ahsan
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, 22060, Pakistan.
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University, Abbottabad Campus, KPK, 22060, Pakistan.
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Toward the design of inorganic–organic hybrid Ir(III) complexes containing borazine and benzene ligands with excellent second-order NLO responses: An appropriate substitution and π-conjugated extension. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2022.121081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Li XH, Cheng X, Wang WL, Yu D, Ni BL, Sun WM. Alkali-Metal-Free Coinage Metalides: Specific Pairing and Location of Doping Atoms Bring Forth High Stability and Considerable Nonlinear Optical Response. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Xiang-Hui Li
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou350004, Fujian, People’s Republic of China
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, Fujian350007, People’s Republic of China
| | - Xin Cheng
- The Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou350108, People’s Republic of China
| | - Wen-Lu Wang
- The Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou350108, People’s Republic of China
| | - Dan Yu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou510006, China
| | - Bi-Lian Ni
- The Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou350108, People’s Republic of China
| | - Wei-Ming Sun
- The Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou350108, People’s Republic of China
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Zhang B, Cheng Z, Hou J. The electronic structures and nonlinear optical properties of Alkali and Alkali earth metal atoms doped C6H6Cl6: A density functional theoretical study. J Mol Graph Model 2022; 116:108263. [DOI: 10.1016/j.jmgm.2022.108263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 06/18/2022] [Accepted: 06/27/2022] [Indexed: 10/31/2022]
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Zhang B, Zheng R, Wang C, Hou J. The Alkaline-earthides based parallel-stacked dimer and trimer of Janus face C6H6F6 showing extremely large nonlinear optical responses. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zheng R, Zhang B, Wang C, Hou J. DFT studies of electronic and nonlinear optical properties of a novel class of excess electron compounds based on multi-alkali metal atoms-doped Janus face C 13H 10F 12. NEW J CHEM 2022. [DOI: 10.1039/d2nj02671f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three-ring Janus face C13H10F12 has a larger surface than F6C6H6, which is useful to tune different types of excess electron compound by doping multi-alkali metal atoms.
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Affiliation(s)
- Ruiting Zheng
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China
| | - Bicheng Zhang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China
| | - Chao Wang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China
- Jilin Tobacco Industrial Co., Ltd., Changchun Shiji Rd No. 99, 130031, China
| | - Jianhua Hou
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China
- Engineering Research Center of Optoelectronic Functional Materials, Ministry of Education, Changchun, 130022, P. R. China
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Ahsin A, Shah AB, Ayub K. Germanium-based superatom clusters as excess electron compounds with significant static and dynamic NLO response; a DFT study. RSC Adv 2021; 12:365-377. [PMID: 35424493 PMCID: PMC8978613 DOI: 10.1039/d1ra08192f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 12/04/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, the geometric, electronic, and nonlinear optical properties of excess electron zintl clusters Ge5AM3, Ge9AM5, and Ge10AM3 (AM = Li, Na, and K) are investigated. The clusters under consideration demonstrate considerable electronic stability as well as superalkali characteristics. The NBO charge is transferred from the alkali metal to the Ge-atoms. The FMO analysis shows fabulous conductive properties with a significant reduction in SOMO-LUMO gaps (0.79-4.04 eV) as compared with undoped systems. The designed clusters are completely transparent in the deep UV-region and show absorption in the visible and near-IR region. Being excess electron compounds these clusters exhibit remarkable hyperpolarizability response up to 8.99 × 10-26 esu, where a static second hyperpolarizability (γ o) value of up to 2.15 × 10-30 esu was recorded for Ge9Na5 superatom clusters. The excitation energy is the main controlling factor for hyperpolarizability as revealed from the two-level model study. The electro-optical Pockel's effect and the second harmonic generation phenomenon (SHG) are used to investigate dynamic nonlinear optical features. At a lower applied frequency (=532 nm), the dynamic hyperpolarizability and second hyperpolarizability values are significantly higher for the studied clusters. Furthermore, for the Ge9K5 cluster, the hyper Rayleigh scattering (HRS) increases to 5.03 × 10-26 esu.
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Affiliation(s)
- Atazaz Ahsin
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - Ahmed Bilal Shah
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad KPK 22060 Pakistan
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus Abbottabad KPK 22060 Pakistan
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Zhang B, Wen J, Zhang Y, Xiong Y, Huang X, Hou J, Wang X, Guan J, Zhi Q. Design a novel type of excess electron compounds with large nonlinear optical responses using group 12 elements (Zn, Cd and Hg). J Mol Graph Model 2021; 109:108003. [PMID: 34500246 DOI: 10.1016/j.jmgm.2021.108003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/23/2021] [Accepted: 08/05/2021] [Indexed: 11/18/2022]
Abstract
Based on the interesting Janus-type all-cis1,2,3,4,5,6-hexafluorocyclohexane (1) molecule, a novel type of excess electron compounds MF-1-MH (MF = Li, Na and K, MH = Zn, Cd and Hg) were designed theoretically. The geometric structures, electronic structures and nonlinear optical properties of MF-1-MH compounds were studied by density functional theory. Our results show that in Li-1-MH, the obvious charge transfer between Li and MH can be observed while in Na/K-1-MH, the charge transfer between Na/K and MH is negligible. Particularly, the MF-1-MH exhibit remarkable nonlinear optical (NLO) response and the first hyperpolarizability of the K-1-Zn almost achieve 1.0 × 106 au. We hope this work will further enrich the family of excess electron compounds, so that more experimental interests and efforts can be attracted to propose and synthesize new excellent NLO materials.
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Affiliation(s)
- Bicheng Zhang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
| | - Jiaqi Wen
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
| | - Yuze Zhang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
| | - Yongkang Xiong
- School of Information and Control Engineering, Qingdao University of Technology, Qingdao, 266500, PR China
| | - Xiaohan Huang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
| | - Jianhua Hou
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China; Engineering Research Center of Optoelectronic Functional Materials, Ministry of Education, Changchun, 130022, PR China.
| | - Xiaojian Wang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
| | - Jialin Guan
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
| | - Qiang Zhi
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, PR China
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15
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Clark JL, Taylor A, Geddis A, Neyyappadath RM, Piscelli BA, Yu C, Cordes DB, Slawin AMZ, Cormanich RA, Guldin S, O'Hagan D. Supramolecular packing of alkyl substituted Janus face all- cis 2,3,4,5,6-pentafluorocyclohexyl motifs. Chem Sci 2021; 12:9712-9719. [PMID: 34349942 PMCID: PMC8293821 DOI: 10.1039/d1sc02130c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/04/2021] [Indexed: 02/04/2023] Open
Abstract
This study uses X-ray crystallography, theory and Langmuir isotherm analysis to explore the conformations and molecular packing of alkyl all-cis 2,3,4,5,6-pentafluorocyclohexyl motifs, which are prepared by direct aryl hydrogenations from alkyl- or vinyl-pentafluoroaryl benzenes. Favoured conformations retain the more polar triaxial C-F bond arrangement of the all-cis 2,3,4,5,6-pentafluorocyclohexyl ring systems with the alkyl substituent adopting an equatorial orientation, and accommodating strong supramolecular interactions between rings. Langmuir isotherm analysis on a water subphase of a long chain fatty acid and alcohol carrying terminal all-cis 2,3,4,5,6-pentafluorocyclohexyl rings do not show any indication of monolayer assembly relative to their cyclohexane analogues, instead the molecules appear to aggregate and form higher molecular assemblies prior to compression. The study indicates the power and potential of this ring system as a motif for ordering supramolecular assembly.
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Affiliation(s)
- Joshua L Clark
- School of Chemistry, University of St Andrews North Haugh, St Andrews, Fife KY16 9ST UK
| | - Alaric Taylor
- Department of Chemical Engineering, University College London Torrington Place London WC1E 7JE UK
| | - Ailsa Geddis
- School of Chemistry, University of St Andrews North Haugh, St Andrews, Fife KY16 9ST UK
| | | | - Bruno A Piscelli
- Chemistry Institute, University of Campinas Monteiro Lobato Street, Campinas Sao Paulo 13083-862 Brazil
| | - Cihang Yu
- School of Chemistry, University of St Andrews North Haugh, St Andrews, Fife KY16 9ST UK
| | - David B Cordes
- School of Chemistry, University of St Andrews North Haugh, St Andrews, Fife KY16 9ST UK
| | - Alexandra M Z Slawin
- School of Chemistry, University of St Andrews North Haugh, St Andrews, Fife KY16 9ST UK
| | - Rodrigo A Cormanich
- Chemistry Institute, University of Campinas Monteiro Lobato Street, Campinas Sao Paulo 13083-862 Brazil
| | - Stefan Guldin
- Department of Chemical Engineering, University College London Torrington Place London WC1E 7JE UK
| | - David O'Hagan
- School of Chemistry, University of St Andrews North Haugh, St Andrews, Fife KY16 9ST UK
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16
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Sohail M, Khaliq F, Mahmood T, Ayub K, Tabassum S, Gilani MA. Influence of bi-alkali metals doping over Al12N12 nanocage on stability and optoelectronic properties: A DFT investigation. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109457] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Alkaline earth metals serving as source of excess electron for alkaline earth metals to impart large second and third order nonlinear optical response; a DFT study. J Mol Graph Model 2020; 101:107759. [DOI: 10.1016/j.jmgm.2020.107759] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 11/20/2022]
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18
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Sajjad S, Ali A, Mahmood T, Ayub K. Janus alkaline earthides with excellent NLO response from sodium and potassium as source of excess electrons; a first principles study. J Mol Graph Model 2020; 100:107668. [DOI: 10.1016/j.jmgm.2020.107668] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 12/25/2022]
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19
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O'Hagan D. Polar Organofluorine Substituents: Multivicinal Fluorines on Alkyl Chains and Alicyclic Rings. Chemistry 2020; 26:7981-7997. [PMID: 32083392 DOI: 10.1002/chem.202000178] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/20/2020] [Indexed: 12/12/2022]
Abstract
This Review outlines the progression, primarily of our own work, but with important contributions from other labs, on the synthesis and properties of multiple vicinally fluorinated alkyl chains and rings. Chain conformations of individual diastereoisomers with -CHF- at adjacent carbons are influenced by stereoelectronic factors associated with the polar C-F bond and the polarised geminal hydrogens. Generally, the chain will prefer a conformation which acts to minimise overall molecular polarity, and where the C-F bonds orient away from each other. However, when vicinal fluorine atoms are positioned on a ring then conformations are more constrained. The ring will adopt optimal conformations such as a chair in cyclohexane and then C-F bonds can be introduced with a stereochemistry that forces parallel (axial) orientations. In the case of cyclohexane, 1,3-diaxial arrangements of C-F bonds impart considerable polarity to the ring, resulting in an electronegative 'fluorine face' and an electropositive 'hydrogen face'. For all-syn 1,2,3,4,5,6-hexafluorocyclohexane, this arrangement generates an unusually polar aliphatic ring system. Most recently the concept has been extended to the preparation of all-syn 1,2,3-trifluorocyclopropanes, a rigid ring system with fluorine atoms on one face and hydrogens on the other. Lipophilicity Log P values of such compounds indicate that they are significantly more polar than their parent alicyclic hydrocarbons and give some positive indication for a future role of such substituents in medicinal chemistry. Expanding to such a role will require access to improved synthesis methods to these motifs and consequently access to a broader a range of building blocks, however some exciting new methods have emerged recently and these are briefly reviewed.
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Affiliation(s)
- David O'Hagan
- School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST, UK
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20
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Li XH, Zhang XL, Chen QH, Zhang L, Chen JH, Wu D, Sun WM, Li ZR. Coinage metalides: a new class of excess electron compounds with high stability and large nonlinear optical responses. Phys Chem Chem Phys 2020; 22:8476-8484. [PMID: 32285081 DOI: 10.1039/c9cp06894e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The possibility of using coinage metal atoms as excess electron acceptors is examined for the first time by designing a new class of M+-1-M'- (M = Li, Na, and K; M' = Cu, Ag, and Au) compounds termed "coinage metalides" on the basis of an intriguing Janus-type all-cis1,2,3,4,5,6-hexafluorocyclohexane (1) molecule. Under the large facial polarization of 1, the outermost ns1 electrons of alkali metal atoms can be transferred to coinage metal atoms, forming diffuse excess electrons around them. Consequently, the resulting M+-1-Cu- and M+-1-Ag- compounds exhibit significantly large nonlinear optical (NLO) responses. In particular, these novel M+-1-M'- compounds exhibit much higher stability (larger VIEs and Ec values) than that of the corresponding M+·1·M'- (M, M' = Li, Na, and K) alkalides. We hope this work could open up new possibilities for NLO material design by using coinage metal atoms as excess electron acceptors and, on the other hand, attract more experimental interest and efforts to synthesize such stable compounds in the laboratory.
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Affiliation(s)
- Xiang-Hui Li
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou 350004, Fujian, People's Republic of China
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21
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Li XH, Zhang L, Zhang XL, Ni BL, Li CY, Sun WM. Designing a new class of excess electron compounds with unique electronic structures and extremely large non-linear optical responses. NEW J CHEM 2020. [DOI: 10.1039/d0nj00896f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New Ca+-1-M′− (M′ = Li, Na, and K) compounds with typical alkalide features and electride-like characteristics have been obtained.
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Affiliation(s)
- Xiang-Hui Li
- Medical Technology and Engineering College
- Fujian Medical University
- Fuzhou 350004
- People's Republic of China
| | - Li Zhang
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research
- The School of Pharmacy
- Fujian Medical University
- Fuzhou 350108
- People's Republic of China
| | - Xiao-Ling Zhang
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research
- The School of Pharmacy
- Fujian Medical University
- Fuzhou 350108
- People's Republic of China
| | - Bi-Lian Ni
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research
- The School of Pharmacy
- Fujian Medical University
- Fuzhou 350108
- People's Republic of China
| | - Chun-Yan Li
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research
- The School of Pharmacy
- Fujian Medical University
- Fuzhou 350108
- People's Republic of China
| | - Wei-Ming Sun
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research
- The School of Pharmacy
- Fujian Medical University
- Fuzhou 350108
- People's Republic of China
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22
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Fang Z, Gillatt RZ, Slawin AMZ, Cordes DB, Carpenter-Warren CL, O'Hagan D. Unexpected α,α'-difluoroethers from Ag(i)F and N-bromosuccinimide reactions of dibenzo[a,e]cyclooctatetraene. Chem Commun (Camb) 2019; 55:14295-14298. [PMID: 31712787 DOI: 10.1039/c9cc06426e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An unexpected and highly efficient reaction of dibenzo[a,e]cyclooctatetraene with Ag(i)F and N-bromosuccinamide in dichloromethane results in a sequential ring contraction pathway to generate bridged bicyclic α,α'-difluoroether isomers 10 and 11 where the ether oxygen is isotopically labelled from oxygen-18 water. In diethyl ether the same reaction generates the more classical vicinal difluoride isomers 13 and 14.
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Affiliation(s)
- Zeguo Fang
- School of Chemistry, University of St Andrews, North Haugh, St. Andrews, KY15 5EA, UK.
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23
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Theoretical study of electronic and nonlinear optical properties of Janus all-cis-1,2,3,4,5,6-hexafluorocyclohexane derivative with an extended π conjugation. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2517-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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24
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Sun WM, Wu D. Recent Progress on the Design, Characterization, and Application of Superalkalis. Chemistry 2019; 25:9568-9579. [PMID: 31025432 DOI: 10.1002/chem.201901460] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Indexed: 11/10/2022]
Abstract
Superalkalis are clusters or molecules featuring lower ionization energies (IEs) than that of cesium atoms, and thus exhibit excellent reducing properties. Such special species have great potential to be used in the synthesis of unusual charge-transfer salts and cluster-assembled nanomaterials with tailored properties, in the reduction of carbon dioxide, or as hydrogen storage materials and noble-gas-trapping agents, etc. In this regard, ongoing efforts have been devoted to designing and characterizing superalkalis of new types. The recent progress on the study of superalkalis in terms of theoretical design, characterization, and potential application is summarized in this minireview. We hope this review will not only provide a broad overview of this research field, but also highlight the prospect of further extending the experimental synthesis and practical application of superalkalis.
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Affiliation(s)
- Wei-Ming Sun
- Department of Basic Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou, 350108, P. R. China
| | - Di Wu
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, P. R. China
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25
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Li B, Peng D, Gu FL, Zhu C. Facially Polarized Molecule for Alkalides and Superalkalides with Considerable Nonlinear Optical Response. ChemistrySelect 2018. [DOI: 10.1002/slct.201802769] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Bo Li
- MOE Key Laboratory of Theoretical Chemistry of EnvironmentSchool of Chemistry & Environment of South China Normal University Guangzhou 510006 China
| | - Daoling Peng
- MOE Key Laboratory of Theoretical Chemistry of EnvironmentSchool of Chemistry & Environment of South China Normal University Guangzhou 510006 China
| | - Feng Long Gu
- MOE Key Laboratory of Theoretical Chemistry of EnvironmentSchool of Chemistry & Environment of South China Normal University Guangzhou 510006 China
| | - Chaoyuan Zhu
- MOE Key Laboratory of Theoretical Chemistry of EnvironmentSchool of Chemistry & Environment of South China Normal University Guangzhou 510006 China
- Department of Applied ChemistryInstitute of Molecular Science and Center for Interdisciplinary Molecular ScienceNational Chiao-Tung University Hsinchu 30010 Taiwan
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26
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Alkaline-earthide: A new class of excess electron compounds Li-C6H6F6-M (M = Be, Mg and Ca) with extremely large nonlinear optical responses. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.09.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Roy RS, Nandi PK. Electronic structure and large second-order non-linear optical property of COT derivatives - a theoretical exploration. Phys Chem Chem Phys 2018; 20:18744-18755. [PMID: 29961775 DOI: 10.1039/c8cp00163d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A new strategy to design new molecules based on a fused hydrocarbon ring system comprising a COT ring and two 5-membered rings has been proposed for the study of second order NLO properties. The four charge transferring groups -NR2 (R = H, Li, Na and K) in conjunction with a sufficient number of electron withdrawing groups lead to significant variation of structural parameters and polarity. The charge transfer characteristics can be strongly modulated by introducing calcium metal atoms at suitable sites. Ca metal atoms end-capping the nitrogen ends of two adjacent -CN groups lead to electride character while a Ca metal atom bonded directly to the COT ring leads to greater charge transfer. The size of the alkali metal atom has been found to have a dramatic effect on the enhancement of first hyperpolarizability. The most significant electronic asymmetry induced by the larger potassium metal atom strongly enhances the magnitude of first hyperpolarizability. The variation of first hyperpolarizability has been satisfactorily explained in terms of TD-CAMB3LYP calculated spectroscopic parameters in light of the two-state model.
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Affiliation(s)
- Ria Sinha Roy
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
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28
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Arshad Y, Khan S, Hashmi MA, Ayub K. Transition metal doping: a new and effective approach for remarkably high nonlinear optical response in aluminum nitride nanocages. NEW J CHEM 2018. [DOI: 10.1039/c7nj04971d] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
NLO response of early transition metal (Sc)-doped aluminum nitride nanocages is comparable to those of their alkali-metal-doped analogues.
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Affiliation(s)
- Yasir Arshad
- Department of Chemistry
- COMSATS Institute of Information Technology
- Abbottabad 22060
- Pakistan
| | - Saima Khan
- Department of Chemistry
- COMSATS Institute of Information Technology
- Abbottabad 22060
- Pakistan
| | - Muhammad Ali Hashmi
- School of Chemical and Physical Sciences (SCPS)
- Victoria University of Wellington
- Wellington
- New Zealand
| | - Khurshid Ayub
- Department of Chemistry
- COMSATS Institute of Information Technology
- Abbottabad 22060
- Pakistan
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29
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Shyshov O, Siewerth KA, von Delius M. Evidence for anion-binding of all-cis hexafluorocyclohexane in solution and solid state. Chem Commun (Camb) 2018; 54:4353-4355. [DOI: 10.1039/c8cc01797b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report a solution NMR and X-ray crystallographic study on the anion affinity of all-cis 1,2,3,4,5,6-hexafluorocyclohexane, which has only recently become synthetically accessible.
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Affiliation(s)
- Oleksandr Shyshov
- Institute of Organic Chemistry and Advanced Materials
- University of Ulm
- Ulm 89081
- Germany
| | - Kevin Andre Siewerth
- Institute of Organic Chemistry and Advanced Materials
- University of Ulm
- Ulm 89081
- Germany
| | - Max von Delius
- Institute of Organic Chemistry and Advanced Materials
- University of Ulm
- Ulm 89081
- Germany
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