Chemically amplified molecular resins for shrinkage-controlled direct nanoimprint lithography of functional oxides: an application towards dark-light dual-mode antibacterial surfaces

Nagarjuna, Ravikiran; Thakur, Anindita; Balapure, Aniket; Saifullah, Mohammad S. M.; Ray Dutta, Jayati; Ganesan, Ramakrishnan

doi:10.1039/d3ma00666b

Mater. Adv.

2024

DOI: 10.1039/d3ma00666b

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Chemically amplified molecular resins for shrinkage-controlled direct nanoimprint lithography of functional oxides: an application towards dark-light dual-mode antibacterial surfaces

Ravikiran Nagarjuna,

Anindita Thakur,

Aniket Balapure

et al.

Abstract: The imprinting studies using epoxy/oxetane-based bifunctional monomers of Ti, Zr and Nb showed a reduced feature size shrinkage as low as ∼50%. The TiO2/AgBr nanocomposites displayed high antibacterial efficacy under dark-light dual-mode conditions.

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Cited by 4 publications

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One‐Step Nanoimprinting of Fe₂O₃/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

Thakur,

Singh,

Ganesan

et al. 2024

Small Methods

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The resuscitation of bacteria through biofilms presents a critical challenge in controlling microbial pathogenesis and addressing antimicrobial resistance. Continuous antibiofilm activity, particularly on frequently contacted surfaces, is therefore critical. In this study, a scalable is introduced, one‐step fabrication of Fe2O3/AgBr nanoimprints using a polymerizable sol–gel (PSG) approach to create functional nanostructured thin films with strong antimicrobial properties. Fe2O3, a visible‐light photocatalyst, is coupled with AgBr, a photosensitizer and dark‐active antimicrobial, forming a heterojunction that demonstrated potent antibacterial activity against Escherichia coli and Pseudomonas putida under both dark and light conditions. The heterojunctions exhibit significant biofilm inhibition in the dark, particularly against the robust biofilm‐forming P. putida, while visible light irradiation ensures complete biofilm clearance. These surfaces also achieve optimal reactive oxygen species (ROS) production, selectively targeting bacteria without compromising the integrity of mammalian cells. The biocompatibility is confirmed through MTT, TBARS, and apoptosis assays, demonstrating the non‐cytotoxic nature of the substrates. Moreover, the surfaces enable cell patterning and recovery of mammalian cells from microbial contamination, highlighting their potential in creating bacterial‐free environments for cell culture. This innovative method offers a promising route to next‐generation, self‐cleaning antimicrobial coatings, combining continuous biofilm inhibition with excellent biocompatibility and scalability.

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One‐Step Nanoimprinting of Fe₂O₃/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

Thakur,

Singh,

Ganesan

et al. 2024

Small Methods

View full text Add to dashboard Cite

show abstract

Ti/TiO2 nanoneedles/AgBr heterojunction architecture as antifouling surfaces

Bose,

Ganesan,

Ray Dutta

2024

Bull Mater Sci

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Soft sol–gel combustion synthesis: A potential route for functional nanocomposites of copper-based mixed valent oxides and cermet

Midhu Francis,

Balapure,

Tata

et al. 2024

Chemical Engineering Journal

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Chemically amplified molecular resins for shrinkage-controlled direct nanoimprint lithography of functional oxides: an application towards dark-light dual-mode antibacterial surfaces

Abstract: The imprinting studies using epoxy/oxetane-based bifunctional monomers of Ti, Zr and Nb showed a reduced feature size shrinkage as low as ∼50%. The TiO2/AgBr nanocomposites displayed high antibacterial efficacy under dark-light dual-mode conditions.

Cited by 4 publications

References 86 publications

One‐Step Nanoimprinting of Fe₂O₃/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

One‐Step Nanoimprinting of Fe₂O₃/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

Ti/TiO2 nanoneedles/AgBr heterojunction architecture as antifouling surfaces

Soft sol–gel combustion synthesis: A potential route for functional nanocomposites of copper-based mixed valent oxides and cermet

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Chemically amplified molecular resins for shrinkage-controlled direct nanoimprint lithography of functional oxides: an application towards dark-light dual-mode antibacterial surfaces

Abstract: The imprinting studies using epoxy/oxetane-based bifunctional monomers of Ti, Zr and Nb showed a reduced feature size shrinkage as low as ∼50%. The TiO2/AgBr nanocomposites displayed high antibacterial efficacy under dark-light dual-mode conditions.

Cited by 4 publications

References 86 publications

One‐Step Nanoimprinting of Fe2O3/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

One‐Step Nanoimprinting of Fe2O3/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

Ti/TiO2 nanoneedles/AgBr heterojunction architecture as antifouling surfaces

Soft sol–gel combustion synthesis: A potential route for functional nanocomposites of copper-based mixed valent oxides and cermet

Contact Info

Product

Resources

About

One‐Step Nanoimprinting of Fe₂O₃/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces

One‐Step Nanoimprinting of Fe₂O₃/AgBr Thin Films for Dark‐Light Active Antibiofilm and Bacterial‐Free Cell Culture Surfaces