Antifouling properties of oligo(lactose)-based self-assembled monolayers

Nugraha, Roni; Finlay, John A.; Hill, Sophie; Fyrner, Timmy; Yandi, Wetra; Callow, Maureen E.; Callow, James A.; Ederth, Thomas

doi:10.1080/08927014.2014.1001841

Cited by 10 publications

(11 citation statements)

References 50 publications

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“…The quality of the peptide (and alkylthiol) SAMs was investigated by ellipsometric thickness measurements, wettability tests, IRAS and cyclic voltammetry. The three alkylthiol SAMs which are used as control samples in the assays, form monolayers for which the characterization results agree with previously published data, and we refer to earlier work for details for each of these SAMs (C16 41 , EG6 31 , mPEG 42 ).…”

Section: Characterization Of the Monolayerssupporting

confidence: 81%

Resistance of Zwitterionic Peptide Monolayers to Biofouling

et al. 2018

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Self-assembled monolayers (SAMs) are widely used in science and engineering, and recent progress has demonstrated the utility of zwitterionic peptides with alternating lysine (K) and glutamic acid (E) residues for antifouling purposes. Aiming at developing a peptide-based fouling-resistant SAM suitable for presentation of surface-attached pheromones for barnacle larvae, we have investigated five different peptide SAMs, where four are based on the EK motif, and the fifth was designed based on general principles for fouling resistance. The SAMs were formed by self-assembly onto gold substrates via cysteine residues on the peptides, and formation of SAMs was verified via ellipsometry, wettability, infrared reflection-absorption spectroscopy and cyclic voltammetry. Settlement of cypris larvae of the barnacle Balanus (=Amphibalanus) amphitrite, the target of pheromone studies, was tested. SAMs were also subjected to fouling assays using protein solutions, blood serum, and the bacterium Mycobacterium marinum. The results confirm the favourable antifouling properties of EK-containing peptides in most of the assays, although this did not apply to the barnacle larvae settlement test, where settlement was low on only one of the peptide SAMs. The one peptide that had antifouling properties for barnacles did not contain a pheromone motif, and would not be susceptible to degredation by common serine proteases. We conclude that the otherwise broadly effective antifouling properties of EK-containing peptide SAMs is not directly applicable to barnacles, and that great care must be exercised in the design of peptide-based SAMs for presentation of barnacle-specific ligands.

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Section: Characterization Of the Monolayerssupporting

confidence: 81%

Resistance of Zwitterionic Peptide Monolayers to Biofouling

et al. 2018

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“…Ellipsometric thickness measurements, sessiledroplet contact angle measurements and Fourier-transform infrared reflection-absorption measurements were carried out on samples prepared in parallel, to verify the quality of the SAMs. These data were consistent with previously published results from our laboratory, for both surface types (Petrone, Di Fino et al 2011, Nugraha, Finlay et al 2015.…”

Section: Preparation Of Surfacessupporting

confidence: 83%

Imaging SPR combined with stereoscopic 3D tracking to study barnacle cyprid–surface interactions

et al. 2016

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Barnacle larvae (cyprids) explore surfaces to identify suitable settlement sites. This process is selective, and cyprids respond to numerous surface cues. To better understand the settlement process, it is desirable to simultaneously monitor both the surface exploration behavior and any close interactions with the surface. Stereoscopic 3D tracking of the cyprids provides quantitative access to surface exploration and pre-settlement rituals. Imaging surface plasmon resonance (SPR) reveals any interactions with the surfaces, such as surface inspection during bipedal walking and deposition of temporary adhesives. We report on a combination of both techniques to bring together information on swimming behavior in the vicinity of the interface and physical interactions of the cyprid with the surface. The technical requirements for the setup are described, and we applied the setup to cyprids of Balanus amphitrite. Initial data shows the applicability of the combined setup to correlate exploration and touchdown events on surfaces with different chemical termination.

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“…Several studies have been reported on the resistance of different polysaccharide‐coated surfaces to protein and cell adsorption as well as marine biofouling . More recently, the AF properties of saccharide‐functionalised alkanethiol self‐assembled monolayers (SAMs) were also investigated against both proteins and marine fouling organisms …”

Section: Amphiphilic Polysaccharidesmentioning

confidence: 99%

Amphiphilic Polymer Platforms: Surface Engineering of Films for Marine Antibiofouling

Galli

Martinelli

2017

Macromol. Rapid Commun.

113

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A range of amphiphilic polymers with diverse macromolecular architectures has been developed and incorporated into films and coatings with potential for marine antibiofouling applications, without resorting to addition of currently used biocidal, toxic agents. Novel "green" chemical technologies employ different building blocks to endow the polymer film with surface activity, functionality, structure, and reconstruction according to the outer environment as a result of a tailored amphiphilic character of the polymer platform. We emphasise how these features can interplay and add synergistically to affect antifouling and fouling-release against common, widespread marine micro- and macro-fouling organisms.

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Antifouling properties of oligo(lactose)-based self-assembled monolayers

Cited by 10 publications

References 50 publications

Resistance of Zwitterionic Peptide Monolayers to Biofouling

Resistance of Zwitterionic Peptide Monolayers to Biofouling

Imaging SPR combined with stereoscopic 3D tracking to study barnacle cyprid–surface interactions

Amphiphilic Polymer Platforms: Surface Engineering of Films for Marine Antibiofouling

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