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Wang T, Wang L, Ma N, Zhang Y, Liu L, Wan Y, Zhou L, Qian W. Nanoporous Polystyrene Inverse Opal Materials with Optical Interference Properties for Label-Free Biosensing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39231009 DOI: 10.1021/acs.langmuir.4c01947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
Colloidal crystal nanomaterials have been proven to be valuable substrates for optical-based biosensing due to their ordered macroporous nanostructure and brilliant optical properties. In this work, silica colloidal crystal (SCC) thin films, as well as polystyrene-SCC composite films and inverse opal (IO) polystyrene films fabricated using SCC as templates, are investigated for their application as substrate materials in optical interferometric biosensors. The SCC films formed by the self-assembly of silica colloidal crystals have the most densely packed nano-3D structure, also known as the opal structure. IO films are fabricated by filling the opal pores of SCC with polystyrene and then removing the template, resulting in an interconnected nano-3D ordered macroporous structure, as indicated by the name inverse opal. The performance of the three materials was compared and discussed based on an ordered porous layer interferometry optical platform, focusing on refractive index response, protein adsorption response, and biomolecular interaction response. These results could potentially offer innovative material support for the advancement of label-free optical biosensors, which can be used for more biological/biochemical/biomolecular reaction monitoring studies.
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Affiliation(s)
- Tianze Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Lu Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ning Ma
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yu Zhang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Liming Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yizhen Wan
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Lele Zhou
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Weiping Qian
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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Chiappini A, Faccialà D, Novikova NI, Sardar S, D’Andrea C, Scavia G, Botta C, Virgili T. Enhancement of Photoluminescence Properties via Polymer Infiltration in a Colloidal Photonic Glass. Molecules 2024; 29:654. [PMID: 38338398 PMCID: PMC10856319 DOI: 10.3390/molecules29030654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/19/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Photonic glasses (PGs) based on the self-assembly of monosized nanoparticles can be an effective tool for realizing disordered structures capable of tailoring light diffusion due to the establishment of Mie resonances. In particular, the wavelength position of these resonances depends mainly on the morphology (dimension) and optical properties (refractive index) of the building blocks. In this study, we report the fabrication and optical characterization of photonic glasses obtained via a self-assembling technique. Furthermore, we have demonstrated that the infiltration of these systems with a green-emitting polymer enhances the properties of the polymer, resulting in a large increase in its photoluminescence quantum yield and a 3 ps growing time of the photoluminescence time decay Finally, the development of the aforementioned system can serve as a suitable low-cost platform for the realization of lasers and fluorescence-based bio-sensors.
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Affiliation(s)
- Andrea Chiappini
- Istituto di Fotonica e Nanotecnologia—CNR, IFN and FBK Photonics Unit, Via alla Cascata 56/c, Povo, 38123 Trento, Italy
| | - Davide Faccialà
- Istituto di Fotonica e Nanotecnologia—CNR, IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy;
| | - Nina I. Novikova
- The Photon Factory and School of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand;
| | - Samim Sardar
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (S.S.); (C.D.)
| | - Cosimo D’Andrea
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (S.S.); (C.D.)
| | - Guido Scavia
- SCITEC—CNR, Via A. Corti, 20133 Milano, Italy; (G.S.); (C.B.)
| | - Chiara Botta
- SCITEC—CNR, Via A. Corti, 20133 Milano, Italy; (G.S.); (C.B.)
| | - Tersilla Virgili
- Istituto di Fotonica e Nanotecnologia—CNR, IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy;
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