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Umezaki U, Smith McWillams AD, Tang Z, He ZMS, Siqueira IR, Corr SJ, Ryu H, Kolomeisky AB, Pasquali M, Martí AA. Brownian Diffusion of Hexagonal Boron Nitride Nanosheets and Graphene in Two Dimensions. ACS NANO 2024; 18:2446-2454. [PMID: 38207242 DOI: 10.1021/acsnano.3c11053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Two-dimensional (2D) nanomaterials have numerous interesting chemical and physical properties that make them desirable building blocks for the manufacture of macroscopic materials. Liquid-phase processing is a common method for forming macroscopic materials from these building blocks including wet-spinning and vacuum filtration. As such, assembling 2D nanomaterials into ordered functional materials requires an understanding of their solution dynamics. Yet, there are few experimental studies investigating the hydrodynamics of disk-like materials. Herein, we report the lateral diffusion of hexagonal boron nitride nanosheets (h-BN and graphene) in aqueous solution when confined in 2-dimensions. This was done by imaging fluorescent surfactant-tagged nanosheets and visualizing them by using fluorescence microscopy. Spectroscopic studies were conducted to characterize the interactions between h-BN and the fluorescent surfactant, and atomic force microscopy (AFM) was conducted to characterize the quality of the dispersion. The diffusion data under different gap sizes and viscosities displayed a good correlation with Kramers' theory. We propose that the yielded activation energies by Kramers' equation express the magnitude of the interaction between fluorescent surfactant tagged h-BN and glass because the energies remain constant with changing viscosity and decrease with increasing confinement size. The diffusion of graphene presented a similar trend with similar activation energy as the h-BN. This relationship suggests that Kramers' theory can also be applied to simulate the diffusion of other 2D nanomaterials.
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Affiliation(s)
- Utana Umezaki
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
| | | | - Zhao Tang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Zhi Mei Sonia He
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
| | - Ivan R Siqueira
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Stuart J Corr
- Department of Cardiovascular Surgery, Houston Methodist Hospital, Houston, Texas 77030, United States
- Department of Bioengineering, Rice University, Houston, Texas 77005, United States
| | - Hijun Ryu
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
| | | | - Matteo Pasquali
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Department of Materials Science & Nanoengineering, Rice University, Houston, Texas 77005, United States
| | - Angel A Martí
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Bioengineering, Rice University, Houston, Texas 77005, United States
- Department of Materials Science & Nanoengineering, Rice University, Houston, Texas 77005, United States
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Shah S, Joga R, Kolipaka T, Sabnis Dushyantrao C, Khairnar P, Phatale V, Pandey G, Srivastava S, Kumar S. Paradigm of lyotropic liquid crystals in tissue regeneration. Int J Pharm 2023; 634:122633. [PMID: 36690130 DOI: 10.1016/j.ijpharm.2023.122633] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/12/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023]
Abstract
The liquid crystalline phase has attracted tremendous attention from researchers across the globe due to its intriguing properties. In this article, we enumerate the different classes of liquid crystals. Lyotropic liquid crystals (LLCs) exhibit their liquid crystalline nature based on the surrounding solvent media, which opens novel horizons in drug delivery and tissue regeneration. The advantages of LLCs in the said fields and the thermodynamic mechanistic insights responsible for their structural stabilization have been conveyed. Various fabrication and characterization techniques, along with factors influencing the formation of LLCs, have been discussed. Applications in novel therapeutic avenues like bone extracellular matrix, cardiac remodeling, wound management, and implants have been unveiled. Also, regulatory considerations, patent, and clinical portfolios to circumvent the hurdles of clinical translation have been discussed. LLCs could be a promising approach in diverse avenues of tissue regeneration.
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Affiliation(s)
- Saurabh Shah
- Pharmaceutical Innovation and Translational Research Laboratory (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Ramesh Joga
- Department of Regulatory Affairs, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Tejaswini Kolipaka
- Pharmaceutical Innovation and Translational Research Laboratory (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Chetan Sabnis Dushyantrao
- Department of Regulatory Affairs, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Pooja Khairnar
- Pharmaceutical Innovation and Translational Research Laboratory (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Vivek Phatale
- Pharmaceutical Innovation and Translational Research Laboratory (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Giriraj Pandey
- Pharmaceutical Innovation and Translational Research Laboratory (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Saurabh Srivastava
- Department of Regulatory Affairs, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India.
| | - Sandeep Kumar
- Department of Regulatory Affairs, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India.
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Xiao Y, Pang YX, Yan Y, Qian P, Zhao H, Manickam S, Wu T, Pang CH. Synthesis and Functionalization of Graphene Materials for Biomedical Applications: Recent Advances, Challenges, and Perspectives. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205292. [PMID: 36658693 PMCID: PMC10037997 DOI: 10.1002/advs.202205292] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Since its discovery in 2004, graphene is increasingly applied in various fields owing to its unique properties. Graphene application in the biomedical domain is promising and intriguing as an emerging 2D material with a high surface area, good mechanical properties, and unrivalled electronic and physical properties. This review summarizes six typical synthesis methods to fabricate pristine graphene (p-G), graphene oxide (GO), and reduced graphene oxide (rGO), followed by characterization techniques to examine the obtained graphene materials. As bare graphene is generally undesirable in vivo and in vitro, functionalization methods to reduce toxicity, increase biocompatibility, and provide more functionalities are demonstrated. Subsequently, in vivo and in vitro behaviors of various bare and functionalized graphene materials are discussed to evaluate the functionalization effects. Reasonable control of dose (<20 mg kg-1 ), sizes (50-1000 nm), and functionalization methods for in vivo application are advantageous. Then, the key biomedical applications based on graphene materials are discussed, coupled with the current challenges and outlooks of this growing field. In a broader sense, this review provides a comprehensive discussion on the synthesis, characterization, functionalization, evaluation, and application of p-G, GO, and rGO in the biomedical field, highlighting their recent advances and potential.
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Affiliation(s)
- Yuqin Xiao
- Department of Chemical and Environmental EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- New Materials InstituteUniversity of NottinghamNingbo315100P. R. China
- Materials Interfaces CenterShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518055P. R. China
| | - Yoong Xin Pang
- Department of Chemical and Environmental EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- New Materials InstituteUniversity of NottinghamNingbo315100P. R. China
| | - Yuxin Yan
- College of Energy EngineeringZhejiang UniversityHangzhouZhejiang310027P. R. China
| | - Ping Qian
- Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing100083P. R. China
- School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Haitao Zhao
- Materials Interfaces CenterShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518055P. R. China
| | - Sivakumar Manickam
- Petroleum and Chemical EngineeringFaculty of EngineeringUniversiti Teknologi BruneiBandar Seri BegawanBE1410Brunei Darussalam
| | - Tao Wu
- New Materials InstituteUniversity of NottinghamNingbo315100P. R. China
- Key Laboratory for Carbonaceous Wastes Processing and ProcessIntensification Research of Zhejiang ProvinceUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
| | - Cheng Heng Pang
- Department of Chemical and Environmental EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
- Municipal Key Laboratory of Clean Energy Conversion TechnologiesUniversity of Nottingham Ningbo ChinaNingbo315100P. R. China
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