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Muyizere T, Mukiza J. Progress on the development of a metal salt-assisted ionization source for the mass spectrometric analysis of polymers. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2803-2819. [PMID: 35848110 DOI: 10.1039/d2ay00724j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The mass spectrometric analysis of polymers has been addressed as a challenging research topic due to poor ionization and complicated analysis using conventional mass spectrometry. The ionization source has demonstrated a promising future in rapid mass spectrometric analysis. Soft ionization techniques, such as electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI) are the most ionization sources appeared to be a powerful tools for polymer characterization when combined with MS. However, they always need metal salts to be introduced during the ionization protocol for polymers due to the crucial role played by their ions (cations and anions). The current review focuses on the progress in the development of metal ion-assisted-ionization sources for the mass spectrometric analysis of polymers. Different ionization systems are comprehensively reviewed. The application of metal ion-assisted ESI, nanoESI, PSI, and MALDI-MS for polymer sample analyses is systematically discussed. The future research trends and challenges in this cutting-edge research field are summarized. It also aims to provide the current state-of-the-art of metal salts as a platform for ionization systems for the mass spectrometric characterization of polymers and offers the current challenges and perspectives on the promising future to improve analytical performance in this field. Finally, this mini-review provides a comprehensive handbook to researchers from different research backgrounds wishing to work in this area.
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Affiliation(s)
- Theoneste Muyizere
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100039, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, 100190 Beijing, China.
| | - Janvier Mukiza
- Rwanda Food and Drugs Authority, Kigali 1948, Rwanda.
- School of Education, College of Education, University of Rwanda, P. O. BOX 55, Rwamagana, Rwanda
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2
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Goda R, Kanazawa S, Machida S, Muramatsu S, Inokuchi Y. Conformation of Benzo-12-Crown-4 Complexes with Ammonium Ions Investigated by Cold Gas-Phase Spectroscopy. J Phys Chem A 2021; 125:10410-10418. [PMID: 34818015 DOI: 10.1021/acs.jpca.1c09091] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we examined the conformation and intermolecular interactions of benzo-12-crown-4 (B12C4) complexes with NH4+, CH3NH3+ (MeNH3+), CH3CH2NH3+ (EtNH3+), and CH3CH2CH2NH3+ (PrNH3+) using cold gas-phase spectroscopy. All of the B12C4 complexes showed sharp vibronic features in the UV photodissociation spectra, and the position of the 0-0 band was close to that of the B12C4 complex with an isotropic K+ guest. This result suggests that the conformation of B12C4 is maintained despite oriented interactions with ammonium guests via anisotropic N-H···O interactions. Further, we measured the IR-UV double-resonance spectra of these complexes in the NH stretching region. In the IR-UV spectra of the EtNH3+ and PrNH3+ complexes, two distinct IR fingerprints were observed depending on the UV probe wavelength selected, indicating the existence of another (second) conformer for these complexes. Quantum chemical calculations clarified that the second conformer of the EtNH3+ and PrNH3+ complexes was partially stabilized by the C-H···π hydrogen bond. The conformation of B12C4 complexes with ammonium ions is strongly affected by the interaction between the alkyl chain of the ion guest and the benzene ring of the B12C4 host, although the main intermolecular interaction occurs between the NH3+ group and crown cavity through the N-H···O hydrogen bonds.
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Affiliation(s)
- Ryosuke Goda
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Saya Kanazawa
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Shiori Machida
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Satoru Muramatsu
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
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Liu Y, Chen C, He L, Hu L, Ding Z, Liao S, Tan N. Preparation of a Fungal-Modified Material Linked by the Monoamidoxime Terminal Open-Chain Polyether and Its Uranyl Adsorption. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yaqing Liu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Can Chen
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Leqing He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Lin Hu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Zui Ding
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Sen Liao
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Ni Tan
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
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4
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Tainaka S, Ujihira T, Kubo M, Kida M, Shimoyama D, Muramatsu S, Abe M, Haino T, Ebata T, Misaizu F, Ohshimo K, Inokuchi Y. Conformation of K+(Crown Ether) Complexes Revealed by Ion Mobility–Mass Spectrometry and Ultraviolet Spectroscopy. J Phys Chem A 2020; 124:9980-9990. [DOI: 10.1021/acs.jpca.0c09068] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sota Tainaka
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Tomoyuki Ujihira
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Mayuko Kubo
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Motoki Kida
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Daisuke Shimoyama
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Satoru Muramatsu
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Takayuki Ebata
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Fuminori Misaizu
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Keijiro Ohshimo
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
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5
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Yin C, Fu J, Lu X. Poly(ethylene oxide) helical conformation and alkali metal cation selectivity studied using electrospray ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8719. [PMID: 31899562 DOI: 10.1002/rcm.8719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 10/26/2019] [Accepted: 12/31/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE The poly(ethylene oxide) (PEO)-alkali metal cation interaction is widely used in many areas. The conformation of the PEO-alkali metal cation complex has been studied extensively, but the conformational mechanism is still unclear. Simulations have been used to explain the mechanism, but there is a lack of experimental data from long PEO chains to verify the simulation results. METHODS The relative peak abundance of PEO (iso-C10 H21 (OC2 H4 )n OH (naverage = 7, where n denotes the number of ethylene oxide (EO) units) oligomers complexed to five alkali metal cations (Li+ , Na+ , K+ , Rb+ and Cs+ ) was studied using positive electrospray ionization mass spectrometry (ESI-MS). The ion selectivity of PEO oligomers to alkali metal cations corresponded to the peak abundance in competitive ESI-MS. RESULTS PEO formed its first helix when the number of EO units reached six and the helix played an important role in the ion selectivity of PEO. For larger PEO oligomers with a helix, the ion selectivity of PEO depended on the degree of host-guest matching of the cations and the helix. The highest selectivity of PEO to K+ was due to K+ providing the best shape matching with the helical cavity. For smaller PEO oligomers without a helix, the selectivity was mainly determined by the surface charge density of the cations. CONCLUSIONS The formational mechanism of the PEO-alkali metal cation complex was predicted. The results gave straightforward evidence to explain the conformational mechanism of the PEO-alkali metal cation complex and provided experimental data for further simulation studies.
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Affiliation(s)
- Changna Yin
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jie Fu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou, 324000, China
| | - Xiuyang Lu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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Kubo M, Kida M, Muramatsu S, Inokuchi Y. Induced Fit of Crown Cavity to Ammonium Ion Guests and Photoinduced Intracavity Reactions: Cold Gas-Phase Spectroscopy of Dibenzo-18-Crown-6 Complexes with NH 4+, CH 3NH 3+, and CH 3CH 2NH 3. J Phys Chem A 2020; 124:3228-3241. [PMID: 32255649 DOI: 10.1021/acs.jpca.0c02341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ultraviolet photodissociation (UVPD) spectra of dibenzo-18-crown-6 (DB18C6) complexes with NH4+, CH3NH3+ (MeNH3+), and CH3CH2NH3+ (EtNH3+) [NH4+(DB18C6), MeNH3+(DB18C6), and EtNH3+(DB18C6), respectively] were observed under cold gas-phase conditions. We also measured the infrared (IR)-UV double-resonance spectra of these complexes in the NH stretching region to examine the encapsulation structure. The UVPD and IR-UV spectra were analyzed using quantum chemical calculations. All the ammonium complexes show sharp 0-0 bands at positions close to that of the K+(DB18C6) complex; the conformation of the DB18C6 component in the ammonium complexes is similar to that in K+(DB18C6). In addition, the ammonium complexes each have another type of isomer that the K+(DB18C6) complex does not show in the gas phase. In these isomers, the conformation of the DB18C6 cavity changes, and the strength of the NH···O hydrogen bond increases. During the UVPD, the NH4+(DB18C6) complex provides various photofragment species, such as the C8H9O2+ ion, resulting from cleavage of the DB18C6 component, whereas the dominant fragment ion for the MeNH3+(DB18C6) and EtNH3+(DB18C6) complexes is the ammonium ion itself. The UVPD investigation of deuterated systems suggests that after UV excitation of the NH4+(DB18C6) complex, the dissociation process is initiated by proton transfer from NH4+ to DB18C6, followed by the migration of hydrogen atoms in the crown cavity and the cleavage of the ether ring.
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Affiliation(s)
- Mayuko Kubo
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Motoki Kida
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Satoru Muramatsu
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Interaction and selectivity of 14-crown-4 derivatives with Li +, Na +, and Mg 2+ metal ions. J Mol Model 2020; 26:67. [PMID: 32130534 DOI: 10.1007/s00894-020-4325-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 02/23/2020] [Indexed: 10/24/2022]
Abstract
The interactions between crown ether ligands (14-crown-4, 14C4; 4,4,5,5-tetramethylbenzo-14-crown-4, BC4H12-14C4; 4,4,5,5,9,9,10,10-octamethyl-14-crown-4, C8H24-14C4; dibenzo-14-crown ether-4, DB14C4) and alkaline and alkaline earth metal ions (Li+, Na+, Mg2+) were investigated using density functional theory modeling at the M062X/def2SVP and def2TZVP level. The condensed softness analysis of crown ethers, a condensed Fukui function, a condensed dual descriptor, and frontier molecular orbital theory were used to analyze the reactivities of the complexes. The complex stability was analyzed in terms of the binding energies, standard Gibbs free energy of formation, and energy decomposition of the interaction in aqueous solution. The results show that the active sites were mainly located at the carbon atoms of the benzene ring and oxygen atoms. The reactivities of DB14C4 and BC4H12-14C4 are higher than those of 14C4 and C8H24-14C4. The electrostatic interaction is the principal factor determining the stability of the complexes. The complexes containing Li+ has the greatest stability in aqueous solution among the complexes containing Li+, Na+, and Mg2+. BC4H12-14C4 shows selective adsorption toward Li+ in a mixed solution of Li+, Na+, and Mg2+. To evaluate the stability of complexes containing Mg2+, the solvent effect must be accurately described. An energy decomposition analysis was used to evaluate the stability of complexes containing Li+, Na+, and Mg2+, and the solvent effects were considered.
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8
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Muyizere T, Zheng Y, Liu H, Zhao J, Li J, Lu X, Austin DE, Zhang Z. Metal salt assisted electrospray ionization mass spectrometry for the soft ionization of GAP polymers in negative ion mode. Analyst 2019; 145:34-45. [PMID: 31755893 DOI: 10.1039/c9an01887e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glycidyl azide polymers (GAP) are one of the most important energetic polymers, but it is still a challenge to elucidate their structures using mass spectrometry due to their fragility upon ionization. Herein we developed a soft metal salt assisted electrospray ionization (MSAESI) to characterize directly GAP polymers using mass spectrometry. This technique combines paper spray ionization and the complexing effect of anions from metal salts with GAP in the negative ion mode to softly ionize GAP polymers prior to mass spectrometry analysis. The effects of experimental parameters (e.g., ion mode, applied voltage, and type and concentration of metal salts) have been investigated in detail. In contrast to the positive ion mode, a softer ionization was observed for GAP polymers when the negative ion mode was applied. The radius and average charge of cations and anions in metal salts were found to play crucial roles in determining the performance of the MSAESI analysis of GAP. For a given charge number, a smaller radius of cations favored the soft ionization of GAP polymers (e.g., Na+ > K+ > Rb+), whereas a larger radius of anions led to a preferred performance (e.g., F- < Cl- < Br- < I-) due to variation in dissolution ability. For anions with multiple charges, the ones with fewer charges gave a more favorable ionization to the GAP sample because of their better complexing to GAP molecules than those with more charges in the structure of anions (e.g., NO3- > SO42- > PO43-). According to the experimental observation and evidence from mass spectrometry, we proposed the plausible electrospray mechanisms of MSAESI for GAP analysis with the involvement of metal salts. Moreover, the developed protocol has been applied successfully to the analysis of various GAP samples, and works for other types of sources such as nanoelectrospray ionization.
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Affiliation(s)
- Theoneste Muyizere
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, China.
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9
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Frański R. Gas phase hydration of polyethylene glycol-metal cation complexes. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:88-91. [PMID: 30422363 DOI: 10.1002/jms.4310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 10/25/2018] [Accepted: 11/05/2018] [Indexed: 06/09/2023]
Affiliation(s)
- Rafał Frański
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
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10
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Dhenadhayalan N, Lee HL, Yadav K, Lin KC, Lin YT, Chang AHH. Silicon Quantum Dot-Based Fluorescence Turn-On Metal Ion Sensors in Live Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:23953-62. [PMID: 27541983 DOI: 10.1021/acsami.6b07789] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Multiple sensor systems are designed by varying aza-crown ether moiety in silicon quantum dots (SiQDs) for detecting individual Mg(2+), Ca(2+), and Mn(2+) metal ions with significant selectivity and sensitivity. The detection limit of Mg(2+), Ca(2+), and Mn(2+) can reach 1.81, 3.15, and 0.47 μM, respectively. Upon excitation of the SiQDs which are coordinated with aza-crown ethers, the photoinduced electron transfer (PET) takes place from aza-crown ether moiety to the valence band of SiQDs core such that the reduced probability of electron-hole recombination may diminish the subsequent fluorescence. The fluorescence suppression caused by such PET effect will be relieved after selective metal ion is added. The charge-electron binding force between the metal ion and aza-crown ether hinders the PET and thereby restores the fluorescence of SiQDs. The design of sensor system is based on the fluorescence "turn-on" of SiQDs while in search of the appropriate metal ion. For practical application, the sensing capabilities of metal ions in the live cells are performed and the confocal image results reveal their promising applicability as an effective and nontoxic metal ion sensor.
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Affiliation(s)
- Namasivayam Dhenadhayalan
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica , Taipei 106, Taiwan
| | - Hsin-Lung Lee
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica , Taipei 106, Taiwan
| | - Kanchan Yadav
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica , Taipei 106, Taiwan
| | - King-Chuen Lin
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica , Taipei 106, Taiwan
| | - Yih-Tyng Lin
- Department of Chemistry, National Dong Hwa University , Shoufeng, Hualien 974, Taiwan
| | - A H H Chang
- Department of Chemistry, National Dong Hwa University , Shoufeng, Hualien 974, Taiwan
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11
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Inokuchi Y, Nakatsuma M, Kida M, Ebata T. Conformation of Alkali Metal Ion–Benzo-12-Crown-4 Complexes Investigated by UV Photodissociation and UV–UV Hole-Burning Spectroscopy. J Phys Chem A 2016; 120:6394-401. [DOI: 10.1021/acs.jpca.6b06626] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoshiya Inokuchi
- Department
of Chemistry,
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Maki Nakatsuma
- Department
of Chemistry,
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Motoki Kida
- Department
of Chemistry,
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takayuki Ebata
- Department
of Chemistry,
Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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12
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Taleb Bendiab W, Hamza Reguig F, Hamad S, Martínez-Haya B, Krallafa AM. Ab initio molecular dynamics investigation of proton delocalization in crown ether complexes with H3O+ and NH4 +. J INCL PHENOM MACRO 2016. [DOI: 10.1007/s10847-016-0607-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Ebata T, Inokuchi Y. Laser Spectroscopic Study of Cold Gas-Phase Host-Guest Complexes of Crown Ethers. CHEM REC 2016; 16:1034-53. [DOI: 10.1002/tcr.201500287] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Takayuki Ebata
- Department of Chemistry, Graduate School of Science; Hiroshima University; Higashi-Hiroshima 739-8526 Japan
| | - Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science; Hiroshima University; Higashi-Hiroshima 739-8526 Japan
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14
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Inokuchi Y, Ebata T, Ikeda T, Haino T, Kimura T, Guo H, Furutani Y. New insights into metal ion–crown ether complexes revealed by SEIRA spectroscopy. NEW J CHEM 2015. [DOI: 10.1039/c5nj01787d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate the SEIRA spectroscopy of crown ether complexes for examining the relationship between the guest selectivity, structure, and solvent effect.
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Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima
- Hiroshima 739-8526
| | - Takayuki Ebata
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima
- Hiroshima 739-8526
| | - Toshiaki Ikeda
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima
- Hiroshima 739-8526
| | - Takeharu Haino
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima
- Hiroshima 739-8526
| | | | - Hao Guo
- Institute for Molecular Science
- Myodaiji
- Japan
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15
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Mihelj T, Tomašić V, Biliškov N. 18-crown-6-sodium cholate complex: thermochemistry, structure, and stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6274-6285. [PMID: 24805271 DOI: 10.1021/la501155s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
18-Crown-6, one of the most relevant crown ethers, and sodium cholate, a steroidal surfactant classified as a natural bile salt, are components of a novel, synthesized coordination complex: 18-crown-6-sodium cholate (18C6·NaCh). Like crown ethers, bile salts act as building blocks in supramolecular chemistry to design new functionalized materials with a desired structure and properties. In order to obtain thermal behavior of this 1:1 coordination complex, thermogravimetry and differential thermal analysis were used, as well as microscopic observations and differential scanning calorimetry. Temperature dependent infrared (IR) spectroscopy gave a detailed view into phase transitions. The structures during thermal treatment were observed with powder X-ray diffraction, and molecular models of the phases were made. Hard, glassy, colorless compound 18C6·NaCh goes through crystalline-crystalline polymorphic phase transitions at higher temperatures. The room temperature phase is indexed to a triclinic lattice, while in the high temperature phases molecules take randomly one of the two different configurations in the unit cell, resulting in the 2-fold symmetry. The formation of cholesteric liquid crystalline phase occurs simultaneously with partial decomposition, followed by the isotropization with simultaneous and complete decomposition at much higher temperature, as obtained by IR. The results provide valuable information about the relationship between molecular structure, thermal properties, and stability of the complex, indicating the importance of an appropriate choice of cation, amphiphilic, and crown ether unit in order to synthesize compounds with desired behavior.
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Affiliation(s)
- Tea Mihelj
- Department of Physical Chemistry and ‡Division of Materials Chemistry, Ruđer Bošković Institute , POB 180, HR-10002 Zagreb, Croatia
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16
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Inokuchi Y, Ebata T, Rizzo TR, Boyarkin OV. Microhydration Effects on the Encapsulation of Potassium Ion by Dibenzo-18-Crown-6. J Am Chem Soc 2014; 136:1815-24. [DOI: 10.1021/ja4086066] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoshiya Inokuchi
- Department
of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
| | - Takayuki Ebata
- Department
of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
| | - Thomas R. Rizzo
- Laboratoire
de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Oleg V. Boyarkin
- Laboratoire
de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
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17
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Asenjo-Sanz I, Veloso A, Miranda JI, Pomposo JA, Barroso-Bujans F. Zwitterionic polymerization of glycidyl monomers to cyclic polyethers with B(C6F5)3. Polym Chem 2014. [DOI: 10.1039/c4py00574k] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glycidyl monomers react with B(C6F5)3 to generate cyclic polyethers decorated with functional groups.
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Affiliation(s)
- Isabel Asenjo-Sanz
- Centro de Física de Materiales CSIC-UPV/EHU
- MPC
- 20018 San Sebastian, Spain
| | - Antonio Veloso
- POLYMAT
- Universidad del País Vasco
- UPV/EHU
- 20018 San Sebastian, Spain
| | - José I. Miranda
- SGIKer
- NMR Service
- Universidad del País Vasco
- UPV/EHU
- 20018 San Sebastian, Spain
| | - José A. Pomposo
- Centro de Física de Materiales CSIC-UPV/EHU
- MPC
- 20018 San Sebastian, Spain
- IKERBASQUE-Basque Foundation for Science
- Bilbao, Spain
| | - Fabienne Barroso-Bujans
- Centro de Física de Materiales CSIC-UPV/EHU
- MPC
- 20018 San Sebastian, Spain
- Donostia International Physics Center (DIPC)
- 20018 San Sebastian, Spain
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18
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Pluzhnik-Gladyr SM, Kravtsov VC, Fonari MS, Kamalov GL. Halogen impact into new oxonium benzo-crown ether complexes with tetrachloro- and tetrabromoaurates(iii). Dalton Trans 2014; 43:7087-95. [DOI: 10.1039/c4dt00017j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Gámez F, Hurtado P, Hortal AR, Martínez-Haya B, Berden G, Oomens J. Cations in a Molecular Funnel: Vibrational Spectroscopy of Isolated Cyclodextrin Complexes with Alkali Metals. Chemphyschem 2012; 14:400-7. [DOI: 10.1002/cphc.201200810] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Indexed: 11/10/2022]
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20
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Inokuchi Y, Kusaka R, Ebata T, Boyarkin OV, Rizzo TR. Laser Spectroscopic Study of Cold Host–Guest Complexes of Crown Ethers in the Gas Phase. Chemphyschem 2012. [DOI: 10.1002/cphc.201200746] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi‐Hiroshima 739‐8526 (Japan)
| | - Ryoji Kusaka
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi‐Hiroshima 739‐8526 (Japan)
| | - Takayuki Ebata
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi‐Hiroshima 739‐8526 (Japan)
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne 1015 (Switzerland)
| | - Thomas R. Rizzo
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne 1015 (Switzerland)
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21
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Inokuchi Y, Boyarkin OV, Kusaka R, Haino T, Ebata T, Rizzo TR. Ion Selectivity of Crown Ethers Investigated by UV and IR Spectroscopy in a Cold Ion Trap. J Phys Chem A 2012; 116:4057-68. [DOI: 10.1021/jp3011519] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique
Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Ryoji Kusaka
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takayuki Ebata
- Department of Chemistry, Graduate
School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Thomas R. Rizzo
- Laboratoire de Chimie Physique
Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
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22
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Zobnina VG, Kosevich MV, Chagovets VV, Boryak OA, Vékey K, Gömöry Á, Kulyk AN. Interactions of oligomers of organic polyethers with histidine amino acid. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:532-540. [PMID: 22302493 DOI: 10.1002/rcm.5342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RATIONALE Knowledge on noncovalent intermolecular interactions of organic polyethers with amino acids is essential to gain a better understanding on how polymers assemble in organic nanoparticles which are promising for drug delivery and cryoprotection. The main objective of the present study was to determine how polyethers assemble around ionizable amino acids such as histidine. METHODS Electrospray mass spectrometry was applied to probe the interactions in model systems consisting of polyethylene glycol PEG-400 or oxyethylated glycerol OEG-5 and amino acid histidine hydrochloride. Molecular dynamics simulation was utilized to visualize the structure of complexes of polyether oligomers with histidine in different charge states. RESULTS Stable gas-phase clusters composed of polyether oligomers (PEG(n), OEG(n)) with protonated histidine--PEG(n)•His•H(+), OEG(n)•His•H(+), OEG(n)•OEG(m)•His•H(+) and chlorine counterion--PEG(n)•Cl(-), OEG(n)•Cl(-), were observed under electrospray conditions. Molecular dynamics simulation of representative polyether-histidine complexes revealed the stabilization of oligomers by multiple hydrogen and coordination bonds whereby charged groups are wrapped by the polymeric chains. CONCLUSIONS The self-organization of polyether chains around the protonated imidazole group of histidine was revealed. This finding should be considered when modelling a pegylated protein structure and polyether-based organic nanoparticles.
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Affiliation(s)
- Valentina G Zobnina
- B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, Lenin Avenue 47, Kharkov, 61103, Ukraine
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23
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Gámez F, Martínez-Haya B, Blanco S, López JC, Alonso JL. High-Resolution Rotational Spectroscopy of a Cyclic Ether. J Phys Chem Lett 2012; 3:482-485. [PMID: 26286051 DOI: 10.1021/jz201678w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The conformational landscape of crown ethers has constituted a central topic in the development of host-guest supramolecular chemistry. We report a high-resolution rotational study of a crown ether, 1,4,7,10,13-pentaoxacyclopentadecane (15-crown-5), by means of molecular beam Fourier transform microwave spectroscopy. The considerable size and the broad range of conformations allowed by the flexibility of the cyclic backbone of this ether pose important challenges to spectroscopy approaches. In this investigation, three stable rotamers of the 15-crown-5 ether have been identified and characterized through their rotational constants and centrifugal distortion coefficients. Ab initio quantum calculations at the MP2 level predict these conformers as the most stable ones for the title system and reproduce accurately their distinct structural features. The results pave the ground for an extensive survey of the conformational landscape of the 15-crown-5 and related cyclic ethers in the near term.
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Affiliation(s)
- F Gámez
- †Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - B Martínez-Haya
- †Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - S Blanco
- ‡Grupo de Espectroscopía Molecular, Edificio Quifima, Área de Química Física, Campus Miguel Delibes, Universidad de Valladolid, 47011 Valladolid, Spain
| | - J C López
- ‡Grupo de Espectroscopía Molecular, Edificio Quifima, Área de Química Física, Campus Miguel Delibes, Universidad de Valladolid, 47011 Valladolid, Spain
| | - J L Alonso
- ‡Grupo de Espectroscopía Molecular, Edificio Quifima, Área de Química Física, Campus Miguel Delibes, Universidad de Valladolid, 47011 Valladolid, Spain
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24
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Gámez F, Hurtado P, Hamad S, Martínez-Haya B, Berden G, Oomens J. Tweezer-like Complexes of Crown Ethers with Divalent Metals: Probing Cation-Size-Dependent Conformations by Vibrational Spectroscopy in the Gas Phase. Chempluschem 2012. [DOI: 10.1002/cplu.201100044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Gámez F, Martínez-Haya B, Blanco S, López JC, Alonso JL. Microwave spectroscopy and quantum chemical investigation of nine low energy conformers of the 15-crown-5 ether. Phys Chem Chem Phys 2012; 14:12912-8. [PMID: 22898803 DOI: 10.1039/c2cp41635b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- F Gámez
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Seville, Spain
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26
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Inokuchi Y, Boyarkin OV, Kusaka R, Haino T, Ebata T, Rizzo TR. UV and IR Spectroscopic Studies of Cold Alkali Metal Ion–Crown Ether Complexes in the Gas Phase. J Am Chem Soc 2011; 133:12256-63. [DOI: 10.1021/ja2046205] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Ryoji Kusaka
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takayuki Ebata
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Thomas R. Rizzo
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
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27
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Hurtado P, Gámez F, Hamad S, Martínez-Haya B, Steill JD, Oomens J. Crown Ether Complexes with H3O+ and NH4+: Proton Localization and Proton Bridge Formation. J Phys Chem A 2011; 115:7275-82. [DOI: 10.1021/jp200481w] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Paola Hurtado
- Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - F. Gámez
- Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - Said Hamad
- Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - Bruno Martínez-Haya
- Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, 41013 Seville, Spain
| | - Jeffrey D. Steill
- FOM Institute for Plasma Physics Rijnhuizen, Edisonbaan 14, NL-3439 MN Nieuwegein, The Netherlands
| | - Jos Oomens
- FOM Institute for Plasma Physics Rijnhuizen, Edisonbaan 14, NL-3439 MN Nieuwegein, The Netherlands
- University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
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