DataVXACS Applied Nano MaterialsPaper
journal article·2025-08-29

Morphology-Preserved Ag Alloying in Au Nanosheets Enables Tunable NIR-I/II Plasmonics for Enhanced Photothermal Conversion

Qi He, Qiuping Yang, Xiangyu Tong, Xiaotong Zhang, Yi Wang, Xiaohu Wu, Yanyun Ma, Yiqun Zheng

ACS Applied Nano Materials· Volume 8· Issue 34
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Source abstract

Abstract

Precise spectral modulation of plasmonic absorptions in the near-infrared (NIR-I and NIR-II) regions is crucial for matching laser wavelengths in practical applications, driving significant interest in sensing, photothermal therapy, and bioimaging. In this work, we show that silver (Ag) alloying in gold (Au) nanosheets provides tunable plasmonic absorption across both NIR-I (700–950 nm) and NIR-II (1000–1350 nm) spectral windows while preserving their intrinsic two-dimensional morphology. Through controlled variation of the Ag/Au ratio in a seed-mediated synthesis, we observe a continuous blue-shift of the in-plane dipole plasmon resonance from 1000 nm (NIR-II) to 700 nm (NIR-I). Theoretical simulations confirm that Ag incorporation tunes plasmonic responses by modulating both the free electron density and local dielectric environment. This morphology-preserved alloying approach establishes a versatile platform for developing optically switchable nanomaterials with promising applications in multiplexed biosensing and wavelength-selective photothermal therapy.
Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloysNanomaterials

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

Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry

Chongqing Normal University

School of Chemistry, Chemical Engineering, and Materials

Jining University

College of Electromechanical Engineering

Qingdao University of Science and Technology

Thermal Science Research Center

Shandong Institute of Advanced Technology

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies

Soochow University

Funding

Collaborative Innovation Center of Suzhou Nano Science and Technology · Hundred Outstanding Talent Program of Jining University · Natural Science Foundation of Shandong Province · Priority Academic Program Development of Jiangsu Higher Education Institutions · Higher Education Discipline Innovation Project · Joint International Research Laboratory of Carbon-Based Functional Materials and Devices · Chongqing Youth Expert Studio · Young Innovative Talents Introduction and Cultivation Program for Colleges and Universities of Shandong Province · Science and Technology Innovation Team Foundation of Jining University · Scientific and Technological Innovation Key Project for Construction of Double City Economic Circle in Chengdu-Chongqing Region

References (49)

Show source-provided references
1. 10.1016/j.mattod.2022.11.01110.1016/j.mattod.2022.11.011 ↗
2. 10.1016/j.jare.2021.11.00610.1016/j.jare.2021.11.006 ↗
3. 10.1002/advs.20190047110.1002/advs.201900471 ↗
4. 10.1021/acsanm.2c0253310.1021/acsanm.2c02533 ↗
5. 10.1021/acsenergylett.1c0224110.1021/acsenergylett.1c02241 ↗
6. 10.1021/acs.nanolett.9b0149410.1021/acs.nanolett.9b01494 ↗
7. 10.1038/s44160-024-00518-410.1038/s44160-024-00518-4 ↗
8. 10.1038/ncomms795710.1038/ncomms7957 ↗
9. 10.1002/advs.20190091110.1002/advs.201900911 ↗
10. 10.1021/acsnano.2c0088010.1021/acsnano.2c00880 ↗
11. 10.1039/C8NR02855A10.1039/C8NR02855A ↗
12. 10.1038/s41571-024-00892-010.1038/s41571-024-00892-0 ↗
13. 10.1557/s43577-023-00592-710.1557/s43577-023-00592-7 ↗
14. 10.1039/C7NR09309H10.1039/C7NR09309H ↗
15. 10.1021/jp500638u10.1021/jp500638u ↗
16. 10.1016/j.trechm.2020.03.00810.1016/j.trechm.2020.03.008 ↗
17. 10.1002/adfm.20220497610.1002/adfm.202204976 ↗
18. 10.1039/C4CS00136B10.1039/C4CS00136B ↗
19. 10.1021/cm402023g10.1021/cm402023g ↗
20. 10.1039/D5NR01140J10.1039/D5NR01140J ↗
21. 10.1021/acsomega.8b0302010.1021/acsomega.8b03020 ↗
22. 10.1038/s41598-021-84093-010.1038/s41598-021-84093-0 ↗
23. 10.1021/acsami.6b0372810.1021/acsami.6b03728 ↗
24. 10.1039/D2NA00746K10.1039/D2NA00746K ↗
25. 10.1016/j.jechem.2020.01.00510.1016/j.jechem.2020.01.005 ↗
26. 10.1021/ja502890c10.1021/ja502890c ↗
27. 10.1021/acs.jpcc.4c0304410.1021/acs.jpcc.4c03044 ↗
28. 10.1021/nn102237c10.1021/nn102237c ↗
29. 10.1021/la403707j10.1021/la403707j ↗
30. 10.1021/acsanm.2c0535110.1021/acsanm.2c05351 ↗
31. 10.1021/acs.langmuir.1c0019010.1021/acs.langmuir.1c00190 ↗
32. 10.1021/acs.langmuir.2c0128910.1021/acs.langmuir.2c01289 ↗
33. 10.1021/acs.langmuir.1c0324810.1021/acs.langmuir.1c03248 ↗
34. 10.1021/jp064341w10.1021/jp064341w ↗
35. 10.1364/AO.37.00527110.1364/AO.37.005271 ↗
36. 10.1038/s41598-020-62852-910.1038/s41598-020-62852-9 ↗
37. 10.1039/C8TB00617B10.1039/C8TB00617B ↗
38. 10.1021/acs.jpcc.5b0272810.1021/acs.jpcc.5b02728 ↗
39. 10.1021/acsnano.8b0397810.1021/acsnano.8b03978 ↗
40. 10.1002/smll.20230230210.1002/smll.202302302 ↗
41. 10.1021/la204684u10.1021/la204684u ↗
42. 10.1039/D4RA03135K10.1039/D4RA03135K ↗
43. 10.1021/acsnano.1c1053810.1021/acsnano.1c10538 ↗
44. 10.1021/nn500727w10.1021/nn500727w ↗
45. 10.1021/nl504126u10.1021/nl504126u ↗
46. 10.1016/j.jallcom.2021.16176710.1016/j.jallcom.2021.161767 ↗
47. 10.1246/cl.19095510.1246/cl.190955 ↗
48. 10.1186/s11671-016-1322-z10.1186/s11671-016-1322-z ↗
49. 10.1021/acsami.8b2148810.1021/acsami.8b21488 ↗