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Synthesis and characterization of thiol-stabilized gold nanoparticles appended to bis(pyrazole) pyridine for fabrication of rectangular nano/microstripes and their spin crossover and SERS studies.

作者信息

Botcha Ajay Kumar, Narayana Yemineni S L V

机构信息

Senior Lecture, Sri Chatanya College Gajuwaka, Chinagatyada Vizag Andhra Pradesh 530016 India

Assistant Professor, Department of Chemistry, School of Applied Sciences & Humanities, Vignan's Foundation for Science, Technology and Research Vadlamudi Guntur India-522213

出版信息

RSC Adv. 2025 Sep 2;15(38):31461-31470. doi: 10.1039/d5ra05105c. eCollection 2025 Aug 29.

DOI:10.1039/d5ra05105c
PMID:40904851
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12402768/
Abstract

We report the synthesis and characterization of thiol-stabilized gold nanoparticles (AuNPs), functionalized with bis(pyrazole)pyridine ligands (L4 and 10), and their subsequent assembly into rectangular nano/microstripes using a lithographically controlled wetting (LCW) technique. The resulting microstructured patterns, with widths of ∼2 μm and heights of 150-200 μm, were employed to simultaneously explore spin crossover (SCO) behavior and surface-enhanced Raman scattering (SERS) properties. Compound 10 exhibited SCO behavior with a molar magnetic susceptibility () of ∼3.3 emu K mol at 320 K. AuNPs of spherical, cubic, and triangular morphologies were synthesized and characterized by transmission electron microscopy (TEM), and their shape-dependent surface plasmon resonance (SPR) features were analyzed UV-vis spectroscopy. Further characterization was done using H NMR, Raman spectroscopy, and atomic force microscopy (AFM). These nanostructures enable to combine magnetic and plasmonic characteristics in a single device.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/d2344e1bd3fe/d5ra05105c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/274a72479870/d5ra05105c-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/dbd036e133e8/d5ra05105c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/da1756351c53/d5ra05105c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/7d34ca603bd5/d5ra05105c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/f895ab2b0c65/d5ra05105c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/f40aba139f8b/d5ra05105c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/3edb8fd6143b/d5ra05105c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/fea8bd1d7225/d5ra05105c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/d2344e1bd3fe/d5ra05105c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/274a72479870/d5ra05105c-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/dbd036e133e8/d5ra05105c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/da1756351c53/d5ra05105c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/7d34ca603bd5/d5ra05105c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/f895ab2b0c65/d5ra05105c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/f40aba139f8b/d5ra05105c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/3edb8fd6143b/d5ra05105c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/fea8bd1d7225/d5ra05105c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51ac/12402768/d2344e1bd3fe/d5ra05105c-f8.jpg

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本文引用的文献

[1]
An organometallic approach to sub-2 nm thiolate-protected Au nanoclusters with enhanced catalytic and therapeutic properties.

Nanoscale Adv. 2025-4-17

[2]
Beyond Spin Crossover: Optical and Electronic Horizons of 2,6-Bis(pyrazol-1-yl)pyridine Ligands and Complexes.

Molecules. 2025-3-14

[3]
Surface-enhanced Raman spectroscopy: a half-century historical perspective.

Chem Soc Rev. 2025-2-3

[4]
Gold Nanoparticles: Multifunctional Properties, Synthesis, and Future Prospects.

Nanomaterials (Basel). 2024-11-11

[5]
Plasmonic nanoparticle sensors: current progress, challenges, and future prospects.

Nanoscale Horiz. 2024-11-19

[6]
Mix and match - controlling the functionality of spin-crossover materials through solid solutions and molecular alloys.

Dalton Trans. 2024-8-20

[7]
Surface-Enhanced Raman Spectroscopy: Current Understanding, Challenges, and Opportunities.

ACS Nano. 2024-6-4

[8]
Room temperature spin crossover properties in a series of mixed-anion Fe(NHtrz)(BF)(SiF) complexes.

Dalton Trans. 2024-4-16

[9]
A General One-Step Synthesis of Alkanethiyl-Stabilized Gold Nanoparticles with Control over Core Size and Monolayer Functionality.

Chem Mater. 2023-7-17

[10]
Gold nanomaterials for optical biosensing and bioimaging.

Nanoscale Adv. 2021-4-14

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