1
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Duncan KM, Trousdale RC, Gonzales CN, Steel WH, Walker RA. l-Phenylalanine Partitioning Mechanisms in Model Biological Membranes. J Phys Chem B 2023. [PMID: 37315336 DOI: 10.1021/acs.jpcb.2c08582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Time-resolved fluorescence spectroscopy in combination with differential scanning calorimetry (DSC) was used to study the chemical interactions that occur when l-phenylalanine is introduced to solutions containing phosphatidylcholine vesicles. Studies reported in this work address open questions about l-Phe's affinity for lipid vesicle bilayers, the effects of l-Phe partitioning on bilayer properties, l-Phe's solvation within a lipid bilayer, and the amount of l-Phe within that local solvation environment. DSC data show that l-Phe reduces the amount of heat necessary to melt saturated phosphatidylcholine bilayers from their gel to liquid-crystalline state but does not change the transition temperature (Tgel-lc). Time-resolved emission shows only a single l-Phe lifetime at low temperatures corresponding to l-Phe remaining solvated in aqueous solution. At temperatures close to Tgel-lc, a second, shorter lifetime appears that is assigned to l-Phe already embedded within the membrane that becomes hydrated as water starts to permeate the lipid bilayer. This new lifetime is attributed to a conformationally restricted rotamer in the bilayer's polar headgroup region and accounts for up to 30% of the emission amplitude. Results reported for dipalmitoylphosphatidylcholine (DPPC, 16:0) lipid vesicles prove to be general, with similar effects observed for dimyristoylphosphatidylcholine (DMPC, 14:0) and distearoylphosphatidylcholine (DSPC, 18:0) vesicles. Taken together, these results create a complete and compelling picture of how l-Phe associates with model biological membranes. Furthermore, this approach to examining amino acid partitioning into membranes and the resulting solvation forces points to new strategies for studying the structure and chemistry of membrane-soluble peptides and selected membrane proteins.
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Affiliation(s)
- Katelyn M Duncan
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Rhys C Trousdale
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Cristina N Gonzales
- Department of Chemistry, Reed College, Portland, Oregon 97202, United States
| | - William H Steel
- Department of Chemistry, York College of Pennsylvania, York, Pennsylvania 17403, United States
| | - Robert A Walker
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
- Montana Materials Science Program, Montana State University, Bozeman, Montana 59717, United States
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2
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Andersson Å, Poline M, Houthuijs KJ, van Outersterp RE, Berden G, Oomens J, Zhaunerchyk V. IRMPD Spectroscopy of Homo- and Heterochiral Asparagine Proton-Bound Dimers in the Gas Phase. J Phys Chem A 2021; 125:7449-7456. [PMID: 34428065 PMCID: PMC8419839 DOI: 10.1021/acs.jpca.1c05667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/11/2021] [Indexed: 12/16/2022]
Abstract
We investigate gas-phase structures of homo- and heterochiral asparagine proton-bound dimers with infrared multiphoton dissociation (IRMPD) spectroscopy and quantum-chemical calculations. Their IRMPD spectra are recorded at room temperature in the range of 500-1875 and 3000-3600 cm-1. Both varieties of asparagine dimers are found to be charge-solvated based on their IRMPD spectra. The location of the principal intramolecular H-bond is discussed in light of harmonic frequency analyses using the B3LYP functional with GD3BJ empirical dispersion. Contrary to theoretical analyses, the two spectra are very similar.
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Affiliation(s)
- Åke Andersson
- Department
of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - Mathias Poline
- Department
of Physics, Stockholm University, 10691 Stockholm, Sweden
| | - Kas J. Houthuijs
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Rianne E. van Outersterp
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Giel Berden
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Jos Oomens
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Vitali Zhaunerchyk
- Department
of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
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3
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Ren J, Zhang XY, Kong XL. Structure of protonated heterodimer of proline and phenylalanine: Revealed by infrared multiphoton dissociation spectroscopy and theoretical calculations. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp2006089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Juan Ren
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xian-yi Zhang
- School of Physics and Electronic Information, Anhui Normal University, Anhui Normal University, Wuhu 241000, China
| | - Xiang-lei Kong
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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4
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Hu Y, Wang Z, Jiang X, Cai X, Su SJ, Huang F, Cao Y. One-step synthesis of cyclic compounds towards easy room-temperature phosphorescence and deep blue thermally activated delayed fluorescence. Chem Commun (Camb) 2018; 54:7850-7853. [DOI: 10.1039/c8cc03833c] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Novel cyclic compounds were synthesized by one-pot synthesis and THF-irrigating purification with deep blue thermally activated delayed fluorescence and room-temperature phosphorescence dual emission.
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Affiliation(s)
- Yingyuan Hu
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Zhenfeng Wang
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Xiaofang Jiang
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Xinyi Cai
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Shi-Jian Su
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Fei Huang
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
| | - Yong Cao
- State Key Laboratory of Luminescent Materials and Devices
- Institute of Polymer Optoelectronic Materials and Devices
- South China University of Technology
- Guangzhou 510640
- P. R. China
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5
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Hao L, Wang M, Shan W, Deng C, Ren W, Shi Z, Lü H. L-proline-based deep eutectic solvents (DESs) for deep catalytic oxidative desulfurization (ODS) of diesel. JOURNAL OF HAZARDOUS MATERIALS 2017; 339:216-222. [PMID: 28654786 DOI: 10.1016/j.jhazmat.2017.06.050] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 05/15/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
A series of L-proline-based DESs was prepared through an atom economic reaction between L-proline (L-Pro) and four different kinds of organic acids. The DESs were characterized by Fourier transform infrared spectroscopy (FT-IR), H nuclear magnetic resonance (1HNMR), cyclic voltammogram (CV) and the Hammett method. The synthesized DESs were used for the oxidative desulfurization and the L-Pro/p-toluenesultonic acid (L-Pro/p-TsOH) system shows the highest catalytic activity that the removal of dibenzothiophene (DBT) reached 99% at 60°C in 2h, which may involve the dual activation of the L-Pro/p-TsOH. The acidity of four different L-proline-based DESs was measured and the results show that it could not simply conclude that the correlation between the acidity of DESs and desulfurization capability was positive or negative. The electrochemical measurements evidences and recycling experiment indicate a good stability performance of L-Pro/p-TsOH in desulfurization. This work will provide a novel and potential method for the deep oxidation desulfurization.
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Affiliation(s)
- Lingwan Hao
- Green chemistry centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Meiri Wang
- Green chemistry centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Wenjuan Shan
- Institute of chemistry for Functionalized Materials, College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, China
| | - Changliang Deng
- Green chemistry centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Wanzhong Ren
- Green chemistry centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Zhouzhou Shi
- Green chemistry centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China
| | - Hongying Lü
- Green chemistry centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China.
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6
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Yang Z, Mao Z, Zhang X, Ou D, Mu Y, Zhang Y, Zhao C, Liu S, Chi Z, Xu J, Wu YC, Lu PY, Lien A, Bryce MR. Intermolecular Electronic Coupling of Organic Units for Efficient Persistent Room-Temperature Phosphorescence. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509224] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhiyong Yang
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Zhu Mao
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Xuepeng Zhang
- School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Depei Ou
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Yingxiao Mu
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Yi Zhang
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Cunyuan Zhao
- School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Siwei Liu
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Zhenguo Chi
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Jiarui Xu
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films; State Key Laboratory of OEMT; School of Chemistry and Chemical Engineering; Sun Yat-sen University; Guangzhou 510275 China
| | - Yuan-Chun Wu
- Shenzhen China Star Optoelectronics Technology Co., Ltd; China
| | - Po-Yen Lu
- Shenzhen China Star Optoelectronics Technology Co., Ltd; China
| | - Alan Lien
- Shenzhen China Star Optoelectronics Technology Co., Ltd; China
| | - Martin R. Bryce
- Department of Chemistry; Durham University; Durham DH1 3LE UK
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7
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Yang Z, Mao Z, Zhang X, Ou D, Mu Y, Zhang Y, Zhao C, Liu S, Chi Z, Xu J, Wu YC, Lu PY, Lien A, Bryce MR. Intermolecular Electronic Coupling of Organic Units for Efficient Persistent Room-Temperature Phosphorescence. Angew Chem Int Ed Engl 2016; 55:2181-5. [PMID: 26836346 PMCID: PMC5064736 DOI: 10.1002/anie.201509224] [Citation(s) in RCA: 339] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Indexed: 11/10/2022]
Abstract
Although persistent room-temperature phosphorescence (RTP) emission has been observed for a few pure crystalline organic molecules, there is no consistent mechanism and no universal design strategy for organic persistent RTP (pRTP) materials. A new mechanism for pRTP is presented, based on combining the advantages of different excited-state configurations in coupled intermolecular units, which may be applicable to a wide range of organic molecules. By following this mechanism, we have developed a successful design strategy to obtain bright pRTP by utilizing a heavy halogen atom to further increase the intersystem crossing rate of the coupled units. RTP with a remarkably long lifetime of 0.28 s and a very high quantum efficiency of 5 % was thus obtained under ambient conditions. This strategy represents an important step in the understanding of organic pRTP emission.
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Affiliation(s)
- Zhiyong Yang
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhu Mao
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Xuepeng Zhang
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Depei Ou
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yingxiao Mu
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yi Zhang
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Cunyuan Zhao
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Siwei Liu
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhenguo Chi
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Jiarui Xu
- PCFM Lab, GDHPPC Lab, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of OEMT, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yuan-Chun Wu
- Shenzhen China Star Optoelectronics Technology Co., Ltd, China
| | - Po-Yen Lu
- Shenzhen China Star Optoelectronics Technology Co., Ltd, China
| | - Alan Lien
- Shenzhen China Star Optoelectronics Technology Co., Ltd, China
| | - Martin R Bryce
- Department of Chemistry, Durham University, Durham, DH1 3LE, UK.
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8
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Soorkia S, Broquier M, Grégoire G. Multiscale excited state lifetimes of protonated dimethyl aminopyridines. Phys Chem Chem Phys 2016; 18:23785-94. [DOI: 10.1039/c6cp04050k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photodynamics of protonated ortho and para dimethylaminopyridine molecules has been investigated over 9 orders of magnitude through time-resolved two-color photofragmentation spectroscopy.
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Affiliation(s)
- Satchin Soorkia
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- CNRS
- Univ. Paris Sud
- Université Paris-Saclay
- F-91405 Orsay
| | - Michel Broquier
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- CNRS
- Univ. Paris Sud
- Université Paris-Saclay
- F-91405 Orsay
| | - Gilles Grégoire
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- CNRS
- Univ. Paris Sud
- Université Paris-Saclay
- F-91405 Orsay
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