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Kanomata K, Deguchi T, Ma T, Haseyama T, Miura M, Yamaura D, Tadaki D, Niwano M, Hirano-Iwata A, Hirose F. Photomodulation of electrical conductivity of a PCBM-doped free-standing lipid bilayer in buffer solution. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.10.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cui HF, Wu WW, Li MM, Song X, Lv Y, Zhang TT. A highly stable acetylcholinesterase biosensor based on chitosan-TiO2-graphene nanocomposites for detection of organophosphate pesticides. Biosens Bioelectron 2018; 99:223-229. [DOI: 10.1016/j.bios.2017.07.068] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
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Hoyo J, Guaus E, Torrent-Burgués J. Influence of membrane galactolipids and surface pressure on plastoquinone behaviour. Bioelectrochemistry 2016; 111:123-30. [PMID: 27317998 DOI: 10.1016/j.bioelechem.2016.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 06/08/2016] [Accepted: 06/08/2016] [Indexed: 10/21/2022]
Abstract
In this work biomimetic monolayers of a MGDG, monogalactosyldiacylglycerol, and DGDG, digalactosyldiacylglycerol mixture (MD), in a ratio close to that of the thylakoid membranes of oxygenic photosynthetic organisms, have been prepared. The lipid mixture incorporates plastoquinone-9 (PQ), that is the electron and proton shuttle of the photosynthetic reaction centres. The MD:PQ mixtures have been firstly studied using surface pressure-area isotherms. Langmuir-Blodgett (LB) films of those mixtures have been transferred onto a substrate forming a monolayer that mimics one of the bilayer sides of the thylakoid membranes. These monolayers have been characterized topographically and electrochemically. The results show the influence of PQ in the MD matrix and its partial expulsion when increasing the surface pressure, obtaining two main PQ positions in the MD matrix. The calculated apparent electron transfer rate constants indicate a different kinetic control for the reduction and the oxidation of the PQ/PQH2 couple, being kRapp(I)=0.7·10(-6)s(-1), kRapp(II)=2.2·10(-9)s(-1), kOapp(I)=7.4·10(-4)s(-1) and kOapp(II)=5.2·10(-5)s(-1), respectively. The comparison of the different galactolipid:PQ systems that our group has studied is also presented, concluding that the PQ position in the galactolipid matrix can be tuned according to several controlled variables.
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Affiliation(s)
- Javier Hoyo
- Universitat Politècnica de Catalunya, Group of Molecular and Industrial Biotechnology, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain
| | - Ester Guaus
- Universitat Politècnica de Catalunya, Group of Molecular and Industrial Biotechnology, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain
| | - Juan Torrent-Burgués
- Universitat Politècnica de Catalunya, Group of Molecular and Industrial Biotechnology, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain.
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Hoyo J, Guaus E, Torrent-Burgués J. Monogalactosyldiacylglycerol and digalactosyldiacylglycerol role, physical states, applications and biomimetic monolayer films. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2016; 39:39. [PMID: 27021656 DOI: 10.1140/epje/i2016-16039-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 02/16/2016] [Indexed: 06/05/2023]
Abstract
The relevance of biomimetic membranes using galactolipids has not been expressed in any extensive experimental study of these lipids. Thus, on the one hand, we present an in-depth article about the presence and role of monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG) in thylakoid membranes, their physical states and their applications. On the other hand, we use the Langmuir and Langmuir-Blodgett (LB) techniques to prepare biomimetic monolayers of saturated galactolipids MGDG, DGDG and MGDG:DGDG 2:1 mixture (MD)--biological ratio--. These monolayers are studied using surface pressure-area isotherms and their data are processed to enlighten their physical states and mixing behaviour. These monolayers, once transferred to a solid substrate at several surface pressures are topographically studied on mica using atomic force microscopy (AFM) and using cyclic voltammetry for studying the electrochemical behaviour of the monolayers once transferred to indium-tin oxide (ITO), which has good optical and electrical properties. Moreover, MD presents other differences in comparison with its pure components that are explained by the presence of different kinds of galactosyl headgroups that restrict the optimal orientation of the MGDG headgroups.
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Affiliation(s)
- Javier Hoyo
- Group of Molecular and Industrial Biotechnology, Dpt. Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Barcelona, Spain.
| | - Ester Guaus
- Group of Molecular and Industrial Biotechnology, Dpt. Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Barcelona, Spain
| | - Juan Torrent-Burgués
- Group of Molecular and Industrial Biotechnology, Dpt. Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Barcelona, Spain
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Hoyo J, Guaus E, Torrent-Burgués J, Sanz F. Biomimetic Monolayer Films of Monogalactosyldiacylglycerol Incorporating Plastoquinone. J Phys Chem B 2015; 119:6170-8. [DOI: 10.1021/acs.jpcb.5b02196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Javier Hoyo
- Department
of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa (Barcelona), Spain
- Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain
| | - Ester Guaus
- Department
of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa (Barcelona), Spain
| | - Juan Torrent-Burgués
- Department
of Chemical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa (Barcelona), Spain
- Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain
| | - Fausto Sanz
- Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain
- Department
of Physical Chemistry, Universitat de Barcelona, 08028 Barcelona, Spain
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Hoyo J, Guaus E, Torrent-Burgués J, Sanz F. Biomimetic monolayer films of digalactosyldiacylglycerol incorporating plastoquinone. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:1341-51. [PMID: 25771450 DOI: 10.1016/j.bbamem.2015.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/27/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
Abstract
The photosynthesis is the process used by plants and bacteria cells to convert inorganic matter in organic thanks to the light energy. This process consist on several steps, being one of them the electronic transport from the photosystem II to the cytochrome thanks to plastoquinone-9 (PQ). Here we prepare membranes that mimic the characteristics and composition of natural photosynthetic cell membranes and we characterize them in order to obtain the PQ molecules position in the membrane and their electrochemical behaviour. The selected galactolipid is digalactosyldiacylglycerol (DGDG) that represents the 30% of the thylakoid membrane lipid content. The results obtained are worthful for several science fields due to the relevance of galactolipids as anti-algal, anti-viral, anti-tumor and anti-inflammatory agents and the antioxidant and free radical scavenger properties of prenylquinones. Both pure components (DGDG and PQ) and the DGDG:PQ mixtures have been studied using surface pressure-area isotherms. These isotherms give information about the film stability and indicate the thermodynamic behaviour of the mixture and their physical state. The Langmuir-Blodgett (LB) film has been transferred forming a monolayer that mimics the bottom layer of the biological membranes. This monolayer on mica has been topographically characterized using AFM and both the height and the physical state that they present have been obtained. Moreover, these monolayers have been transferred onto ITO that is a hydrophilic substrate with good optical and electrical features, so that, it is suitable for studying the electrochemical behaviour of these systems and it is a good candidate for energy producing devices.
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Affiliation(s)
- Javier Hoyo
- Universitat Politècnica de Catalunya, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain; Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain
| | - Ester Guaus
- Universitat Politècnica de Catalunya, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain
| | - Juan Torrent-Burgués
- Universitat Politècnica de Catalunya, Dpt. Chemical Engineering, 08222 Terrassa, Barcelona, Spain; Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain.
| | - Fausto Sanz
- Institut de Bioenginyeria de Catalunya (IBEC), 08028 Barcelona, Spain; Universitat de Barcelona, Dpt. Physical-Chemistry, 08028 Barcelona, Spain
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Alpatova NM, Gol’dshleger NF, Ovsyannikova EV. Electrochemistry of fullerenes immobilized on the electrodes. RUSS J ELECTROCHEM+ 2011. [DOI: 10.1134/s1023193508010126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Zhan W, Jiang K. A modular photocurrent generation system based on phospholipid-assembled fullerenes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:13258-13261. [PMID: 18954095 DOI: 10.1021/la802972p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A modular photoconversion system based on phospholipid-incorporated fullerene is reported. It relies on the noncovalent formation of a lipid bilayer on an electrode to achieve precise placement of fullerene and can be quickly implemented in aqueous media. Photosensitizing dyes can be conveniently added to the system to achieve higher conversion efficiency. It is suggested that amphiphilic lipids are attractive materials for organic solar cells because of their versatility in molecular assembly and chemical conjugation.
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Affiliation(s)
- Wei Zhan
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, USA.
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Ye JS, Cui HF, Wen Y, Zhang WD, Ottova A, Tien HT, Xu GQ, Sheu FS. Self-assembly of bilayer lipid membrane at multiwalled carbon nanotubes towards the development of photo-switched functional device. Electrochem commun 2005. [DOI: 10.1016/j.elecom.2004.11.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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11
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Structure and electrochemistry of fullerene lipid-hybrid and composite materials. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0927-5193(03)80053-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Abstract
This paper presents a historic perspective on the origin of the lipid bilayer concept and its experimental realization. Additionally, current studies in close collaboration with our colleagues on the use of supported BLMs as biosensors and molecular devices are delineated. Further, recent research of others on BLMs (planar lipid bilayers) is referenced.
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Affiliation(s)
- Angelica Ottova
- Physiology Department, Michigan State University, East Lansing, MI 48824, USA
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Gu T, Tsamouras D, Melzer C, Krasnikov V, Gisselbrecht JP, Gross M, Hadziioannou G, Nierengarten JF. Photovoltaic devices from fullerene--oligophenyleneethynylene conjugates. Chemphyschem 2002; 3:124-7. [PMID: 12465485 DOI: 10.1002/1439-7641(20020118)3:1<124::aid-cphc124>3.0.co;2-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tao Gu
- Groupe des Matériaux Organiques Institut de Physique et Chimie des Matériaux de Strasbourg Université Louis Pasteur and CNRS 23 rue du Loess, 67037 Strasbourg, France
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The lipid bilayer concept and its experimental realization: from soap bubbles, kitchen sink, to bilayer lipid membranes. J Memb Sci 2001. [DOI: 10.1016/s0376-7388(01)00394-5] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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