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Huynh CM, Arribas Díez I, Thi HKL, Jensen ON, Sellergren B, Irgum K. Terminally Phosphorylated Triblock Polyethers Acting Both as Templates and Pore-Forming Agents for Surface Molecular Imprinting of Monoliths Targeting Phosphopeptides. ACS OMEGA 2023; 8:8791-8803. [PMID: 36910939 PMCID: PMC9996590 DOI: 10.1021/acsomega.3c00007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
The novel process reported here described the manufacture of monolithic molecularly imprinted polymers (MIPs) using a terminally functionalized block copolymer as the imprinting template and pore-forming agent. The MIPs were prepared through a step-growth polymerization process using a melamine-formaldehyde precondensate in a biphasic solvent system. Despite having a relatively low imprinting factor, the use of MIP monolith in liquid chromatography demonstrated the ability to selectively target desired analytes. An MIP capillary column was able to separate monophosphorylated peptides from a tryptic digest of bovine serum albumin. Multivariate data analysis and modeling of the phosphorylated and nonphosphorylated peptide retention times revealed that the number of phosphorylations was the strongest retention contributor for peptide retention on the monolithic MIP capillary column.
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Affiliation(s)
- Chau Minh Huynh
- Department
of Chemistry, Umeå University, S-901 87 Umeå, Sweden
| | - Ignacio Arribas Díez
- Department
of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Hien Kim Le Thi
- Department
of Chemistry, Umeå University, S-901 87 Umeå, Sweden
| | - Ole N. Jensen
- Department
of Biochemistry & Molecular Biology and VILLUM Center for Bioanalytical
Sciences, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Börje Sellergren
- Faculty
of Health and Society, Department of Biomedical Science, Malmö University, S-205 06 Malmö, Sweden
| | - Knut Irgum
- Department
of Chemistry, Umeå University, S-901 87 Umeå, Sweden
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2
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Ariful Islam M, Rocky MMH, Hossain I, Hasan MMH, Khan MA, Chowdhury FI, Akhtar S. Densities, sound velocities, refractive indices, and relevant excess properties for the binary solutions of 3-amino-1-propanol in aqueous and non-aqueous media at different temperatures between T = 298.15 K and 323.15 K. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Critical analytical review: Rare and recent applications of refractive index detector in HPLC chromatographic drug analysis. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107339] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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G-index: A new metric to describe dynamic refractive index effects in HPLC absorbance detection. Talanta 2018; 187:200-206. [PMID: 29853036 DOI: 10.1016/j.talanta.2018.04.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/29/2018] [Accepted: 04/30/2018] [Indexed: 11/21/2022]
Abstract
High performance liquid chromatography (HPLC) with a solvent gradient and absorbance detection is one of the most widely used methods in analytical chemistry. The observed absorbance baseline is affected by the changes in the refractive index (RI) of the mobile phase. Near the limited of detection, this complicates peak quantitation. The general aspects of these RI-induced apparent absorbance effects are discussed. Two different detectors with fundamentally different optics and flow cell concepts, a variable-wavelength detector equipped with a conventional flow cell and a diode-array detector equipped with a liquid core waveguide flow cell, are compared with respect to their RI behavior. A simple method to separate static - partly unavoidable - RI effects from dynamic RI effects is presented. It is shown that the dynamic RI behavior of an absorbance detector can be well described using a single, relatively easy-to-determine metric called the G-index. The G-index is typically in the order of a few seconds and its sign depends on the optical flow cell concept.
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5
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Nghia NV, Oh J, Jung J, Lee MH. Deboronation-Induced Turn-on Phosphorescent Sensing of Fluorides by Iridium(III) Cyclometalates with o-Carborane. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00139] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nguyen Van Nghia
- Department of Chemistry and
EHSRC, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Jihun Oh
- Department of Chemistry and
EHSRC, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry and
EHSRC, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry and
EHSRC, University of Ulsan, Ulsan 44610, Republic of Korea
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6
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Preobrazhenskii MP, Rudakov OB. A regression model for calculating the boiling point isobars of tetrachloromethane-based binary solutions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2015. [DOI: 10.1134/s0036024416010234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Bocian S, Dziubakiewicz E, Buszewski B. Influence of the charge distribution on the stationary phases zeta potential. J Sep Sci 2015; 38:2625-9. [DOI: 10.1002/jssc.201500072] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/08/2015] [Accepted: 05/09/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Szymon Bocian
- Department of Environmental Chemistry & Bioanalytics; Faculty of Chemistry, Nicolaus Copernicus University; Torun Poland
| | - Ewelina Dziubakiewicz
- Department of Environmental Chemistry & Bioanalytics; Faculty of Chemistry, Nicolaus Copernicus University; Torun Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry & Bioanalytics; Faculty of Chemistry, Nicolaus Copernicus University; Torun Poland
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8
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Mallet C, Bolduc A, Bishop S, Gautier Y, Skene WG. Unusually high fluorescence quantum yield of a homopolyfluorenylazomethine--towards a universal fluorophore. Phys Chem Chem Phys 2015; 16:24382-90. [PMID: 25300605 DOI: 10.1039/c4cp01176g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The absolute fluorescence quantum yield (Φfl) of a polyfluorenyl azomethine homopolymer was measured as a function of solvent polarity. The solvent induced and temperature dependent fluorescence of the homopolymer were also investigated and they were compared to the corresponding monomer and copolymer. The Φfl of the homopolymer was consistent (45-70%), regardless of solvent polarity with Stokes shifts up to 7460 cm(-1) in ethanol. In contrast, the Φfl of its corresponding monomer decreased from 60% in ethanol to 1% in toluene, whereas a Φfl < 5% for its analogous copolymer was measured. Moderate fluorescence yields (Φfl ≈ 25%) were also possible in thin film when co-depositing the homopolymer with PMMA. Cryofluorescence was used to probe the excited state deactivation modes. Deactivation by internal conversion was found to compete with fluorescence. The fluorescence deactivation pathways of the homopolymer and its corresponding monomer could be suppressed at 77 K, resulting in fluorescence turn-on. Both fluorophores were found to detect nitroaromatics.
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Affiliation(s)
- Charlotte Mallet
- Laboratoire de Caractérisation Photophysique des Matériaux Conjugués, Département de Chimie, Pavillon JA Bombardier, Université de Montréal, CP 6128, succ. Centre-ville, Montréal, Québec, Canada H3C 3J7
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9
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Prediction of the zeta potentials and ionic descriptors of a silica hydride stationary phase with mobile phases of different pH and ionic strength. Anal Chim Acta 2015; 859:79-86. [DOI: 10.1016/j.aca.2014.10.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/28/2014] [Accepted: 10/31/2014] [Indexed: 11/23/2022]
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10
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Preobrazhensky MA, Rudakov OB. Invariant description of experimental isotherms of physicochemical properties for homogeneous systems. Russ Chem Bull 2014. [DOI: 10.1007/s11172-014-0482-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Ibarlucea B, Díez-Gil C, Ratera I, Veciana J, Caballero A, Zapata F, Tárraga A, Molina P, Demming S, Büttgenbach S, Fernández-Sánchez C, Llobera A. PDMS based photonic lab-on-a-chip for the selective optical detection of heavy metal ions. Analyst 2013; 138:839-44. [DOI: 10.1039/c2an36402f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Shreve AT, Elkins MH, Neumark DM. Photoelectron spectroscopy of solvated electrons in alcohol and acetonitrile microjets. Chem Sci 2013. [DOI: 10.1039/c3sc22063j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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13
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Bui NTH, Jiang W, Sparrman T, Irgum K. Synthesis of poly(N-[tris(hydroxymethyl)methyl]acrylamide) functionalized porous silica for application in hydrophilic interaction chromatography. J Sep Sci 2012. [DOI: 10.1002/jssc.201200195] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Knut Irgum
- Department of Chemistry; Umeå University; Umeå; Sweden
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14
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Bolduc A, Dong Y, Guérin A, Skene WG. Solvatochromic investigation of highly fluorescent 2-aminobithiophene derivatives. Phys Chem Chem Phys 2012; 14:6946-56. [PMID: 22456593 DOI: 10.1039/c2cp40293a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The solvatochromic and electrochemical properties of electronic push-pull 2-aminobithiophenes consisting of an aldehyde and nitro withdrawing groups were examined. With the use of an integrating sphere, the absolute quantum yields of the bithiophenes were measured. They were found to be highly fluorescent (Φfl > 70%), provided the nitro group was not located in the 4'-position. High fluorescence yields were observed regardless of solvent, except for alcohols, notably methanol and ethanol. Cryofluorescence was used to probe the bithiophene temperature dependent excited state deactivation modes. The singlet excited state deactivation mode other than fluorescence was found to be internal conversion involving rotation around the thiophene-thiophene bond. Deactivation by intersystem crossing to the triplet state occurred in ca. 40% only for the unsubstituted 2-aminobithiophene. In contrast, the fluorescence was quenched by photoinduced intramolecular electron transfer when the nitro group was located in the 4'-position of the bithiophene. Both the absorbance and fluorescence of the bithiophenes were found to be solvatochromic with more pronounced solvent dependent shifts being observed with the fluorescence. In fact, both the fluorescence and Stokes shifts were linearly dependent on the ET(30) solvent parameter. Deviations from the linear trend of the Stokes shift with ET(30) were observed in ethanol and methanol as a result of intermolecular hydrogen abstraction from the solvent and by the excited nitro group. The oxidation potential of the bithiophenes was also highly dependent on the type and number of the electron withdrawing substituents, with values ranging between 0.8 and 1.2 V vs. SCE.
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Affiliation(s)
- Andréanne Bolduc
- Laboratoire de caractérisation photophysique des matériaux conjugués, Département de Chimie, Université de Montréal, CP 6128, Centre-ville, Montreal, QC, Canada.
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15
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Carter MCD, Sorrell CD, Serpe MJ. Deswelling Kinetics of Color Tunable Poly(N-Isopropylacrylamide) Microgel-Based Etalons. J Phys Chem B 2011; 115:14359-68. [DOI: 10.1021/jp207138f] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Courtney D. Sorrell
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Michael J. Serpe
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
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16
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Wang X, Goeb S, Ji Z, Pogulaichenko NA, Castellano FN. Homogeneous Photocatalytic Hydrogen Production Using π-Conjugated Platinum(II) Arylacetylide Sensitizers. Inorg Chem 2011; 50:705-7. [DOI: 10.1021/ic101731j] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xianghuai Wang
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Sébastien Goeb
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Zhiqiang Ji
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Nadezhda A. Pogulaichenko
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Felix N. Castellano
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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17
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Young RM, Yandell MA, Niemeyer M, Neumark DM. Photoelectron imaging of tetrahydrofuran cluster anions (THF)n− (1≤n≤100). J Chem Phys 2010; 133:154312. [PMID: 20969391 DOI: 10.1063/1.3489686] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Ryan M Young
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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18
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Boronic acid lectin affinity chromatography (BLAC). 3. Temperature dependence of glycoprotein isolation and enrichment. Anal Bioanal Chem 2010; 397:2401-7. [DOI: 10.1007/s00216-010-3809-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 04/23/2010] [Accepted: 04/29/2010] [Indexed: 11/26/2022]
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19
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Affiliation(s)
- Brian A. Jones
- a Selerity Technologies, Inc. , 2484 W. Custer Road, Salt Lake City , Utah , 84104 , USA
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20
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Yarita T, Nakajima R, Shimada K, Kinugasa S, Shibukawa M. Superheated Water Chromatography of Low Molecular Weight Polyethylene Glycols with Ultraviolet Detection. ANAL SCI 2005; 21:1001-3. [PMID: 16122176 DOI: 10.2116/analsci.21.1001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Superheated water chromatography (SWC) with ultraviolet detection was applied to the separation of low molecular weight polyethylene glycols (PEGs). PEG oligomers could be detected sensitively when the detection wavelength was set at 190 nm. The effect of column temperature on the separation of PEG oligomers was investigated. The elution time of all PEG oligomers decreased with increase in the column temperature; linear relationships were obtained between ln k and 1/T. A temperature-programmed SWC separation enabled the baseline separation of a PEG 200 sample within 50 min.
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Affiliation(s)
- Takashi Yarita
- National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 3, Umezono, Tsukuba, Ibaraki 305-8563, Japan.
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21
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Abstract
The present state of the active use of elevated temperatures in liquid chromatography is reviewed, including the effects on retention, selectivity and efficiency. Separations in aqueous mobile phases as well as non-aqueous media are discussed, with particular emphasis on narrow-bore columns.
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Affiliation(s)
- Tyge Greibrokk
- Department of Chemistry, University of Oslo, POB 1033 Blindern, N-0315 Oslo, Norway.
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