journal article·2024-02-23

Tunable Near-Infrared II Photosensitive Platforms of Plasmonic Ring Nanocone Arrays

The Anh Quang, Gun Kim, So Yeong Lee, Ngoc Thanh Ho, Vu Thi Huong, Van Duc Bui, Sang Jun Son, Jaebum Choo, Tejraj Malleshappa Aminabhavi, Yasser Vasseghian, Sang-Woo Joo

ACS Applied Nano Materials· Volume 7· Issue 4
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Abstract

A well-ordered metal tip array reveals prominent absorption at 1000–1550 nm. Near-infrared II-gold ring nanocone arrays (NIR II-GRNA) were prepared on conical anodic aluminum oxide structures. Plasmonic substrates were prepared via multistep anodization and pore-widening processes followed by metal sputtering. The NIR II-GRNA substrates were prepared on the conical tip by depositing gold layers using a vacuum coater. The controllable structures of the D 25, D 30, and D 35 substrates in terms of tip diameters and gap distances were found to tune optical properties by adjusting the sputtering conditions. The plasmonic charge transfer between the conductive bridges in NIR II-GRNA predicted an additional absorbance mode in the second NIR II region using a finite element method. The NIR II-GRNA substrate exhibited high sensitivity and repeatability of surface-enhanced Raman scattering (SERS) owing to its water repellence and the resonance modes of its absorbance spectra. Poly( N -isopropylacrylamide) was introduced to demonstrate the photosensitive temperature-dependent SERS platform triggered by the NIR II light irradiation. The D 25 substrate exhibited enhanced cancer cell killing upon NIR II irradiation at 1550 nm. Plasmonic nanocone materials can have the potential for NIR II applications.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanoplatforms for cancer theranostics · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 06978, Republic of Korea

Laboratory of Veterinary Pharmacology, College of Veterinary Medical Science and Research Institute for Veterinary Science, Seoul National University, Gwanak-gu 08826, Seoul, Republic of Korea

Department of Chemistry, Gachon University, Seongnam 13120, Republic of Korea

Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea

Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka 580 031, India

University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali 140413, Punjab, India

School of Engineering, Lebanese American University, Byblos, Lebanon

University Centre for Research & Development, Department of Mechanical Engineering, Chandigarh University, Gharuan, Mohali, Punjab 140413, India

Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India

Funding

National Research Foundation of Korea

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