1
|
Jui-Kai Chen J, Chiang WY, Kudo T, Usman A, Masuhara H. Nanoparticle Assembling Dynamics Induced by Pulsed Optical Force. CHEM REC 2021; 21:1473-1488. [PMID: 33661570 DOI: 10.1002/tcr.202100005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 11/06/2022]
Abstract
Femtosecond (fs) laser trapping dynamics is summarized for silica, hydrophobically modified silica, and polystyrene nanoparticles (NPs) in aqueous solution, highlighting their distinct optical trapping dynamics under CW laser. Mutually repulsive silica nanoparticles are tightly confined under fs laser compared to CW laser trapping and, upon increasing laser power, they are ejected from the focus as an assembly. Hydrophobically modified silica and polystyrene (PS) NPs are sequentially ejected just like a stream or ablated, giving bubbles. The ejection and bubbling take place with the direction perpendicular to laser polarization and its direction is randomly switched from one to the other. These characteristic features are interpreted from the viewpoint of single assembly formation of NPs at an asymmetric position in the optical potential. Temporal change in optical forces map is prepared for a single PS NP by calculating scattering, gradient, and temporal forces. The relative contribution of the forces changes with the volume increase of the assembly and, when the pushing force along the trapping pulse propagation overcome the gradient in the focal plane, the assembly undergoes the ejection. Further fs multiphoton absorption is induced for the larger assembly leading to bubble generation. The assembling, ejection, and bubbling dynamics of NPs are characteristic features of pulsed optical force and are considered as a new platform for developing new material fabrication method.
Collapse
Affiliation(s)
- Jim Jui-Kai Chen
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan
| | - Wei-Yi Chiang
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan.,Department of Chemistry, Rice University, 6100 Main St., Space Science and Technology Building, Houston, TX 77005, USA
| | - Tetsuhiro Kudo
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan
| | - Anwar Usman
- Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Negara Brunei Darussalam
| | - Hiroshi Masuhara
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan.,Center for Emergent Functional Matter Science, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu, 30010, Taiwan
| |
Collapse
|
2
|
Croissant JG, Zink JI, Raehm L, Durand JO. Two-Photon-Excited Silica and Organosilica Nanoparticles for Spatiotemporal Cancer Treatment. Adv Healthc Mater 2018; 7:e1701248. [PMID: 29345434 DOI: 10.1002/adhm.201701248] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/08/2017] [Indexed: 12/11/2022]
Abstract
Coherent two-photon-excited (TPE) therapy in the near-infrared (NIR) provides safer cancer treatments than current therapies lacking spatial and temporal selectivities because it is characterized by a 3D spatial resolution of 1 µm3 and very low scattering. In this review, the principle of TPE and its significance in combination with organosilica nanoparticles (NPs) are introduced and then studies involving the design of pioneering TPE-NIR organosilica nanomaterials are discussed for bioimaging, drug delivery, and photodynamic therapy. Organosilica nanoparticles and their rich and well-established chemistry, tunable composition, porosity, size, and morphology provide ideal platforms for minimal side-effect therapies via TPE-NIR. Mesoporous silica and organosilica nanoparticles endowed with high surface areas can be functionalized to carry hydrophobic and biologically unstable two-photon absorbers for drug delivery and diagnosis. Currently, most light-actuated clinical therapeutic applications with NPs involve photodynamic therapy by singlet oxygen generation, but low photosensitizing efficiencies, tumor resistance, and lack of spatial resolution limit their applicability. On the contrary, higher photosensitizing yields, versatile therapies, and a unique spatial resolution are available with engineered two-photon-sensitive organosilica particles that selectively impact tumors while healthy tissues remain untouched. Patients suffering pathologies such as retinoblastoma, breast, and skin cancers will greatly benefit from TPE-NIR ultrasensitive diagnosis and therapy.
Collapse
Affiliation(s)
- Jonas G. Croissant
- Chemical and Biological Engineering; University of New Mexico; 210 University Blvd NE Albuquerque NM 87131-0001 USA
- Center for Micro-Engineered Materials; Advanced Materials Laboratory; University of New Mexico; MSC04 2790, 1001 University Blvd SE, Suite 103 Albuquerque NM 87106 USA
| | - Jeffrey I. Zink
- Department of Chemistry and Biochemistry; University of California Los Angeles; 405 Hilgard Avenue Los Angeles CA 90095 USA
| | - Laurence Raehm
- Institut Charles Gerhardt de Montpellier; UMR 5253 CNRS-UM-ENSCM; Université de Montpellier; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
| | - Jean-Olivier Durand
- Institut Charles Gerhardt de Montpellier; UMR 5253 CNRS-UM-ENSCM; Université de Montpellier; Place Eugène Bataillon 34095 Montpellier Cedex 05 France
| |
Collapse
|