1
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Applebee Z, Howell C. Multi-component liquid-infused systems: a new approach to functional coatings. INDUSTRIAL CHEMISTRY & MATERIALS 2024; 2:378-392. [PMID: 39165661 PMCID: PMC11334363 DOI: 10.1039/d4im00003j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 02/23/2024] [Indexed: 08/22/2024]
Abstract
Antifouling liquid-infused surfaces have generated interest in multiple fields due to their diverse applications in industry and medicine. In nearly all reports to date, the liquid component consists of only one chemical species. However, unlike traditional solid surfaces, the unique nature of liquid surfaces holds the potential for synergistic and even adaptive functionality simply by including additional elements in the liquid coating. In this work, we explore the concept of multi-component liquid-infused systems, in which the coating liquid consists of a primary liquid and a secondary component or components that provide additional functionality. For ease of understanding, we categorize recently reported multi-component liquid-infused surfaces according to the size of the secondary components: molecular scale, in which the secondary components are molecules; nanoscale, in which they are nanoparticles or their equivalent; and microscale, in which the additional components are micrometer size or above. We present examples at each scale, showing how introducing a secondary element into the liquid can result in synergistic effects, such as maintaining a pristine surface while actively modifying the surrounding environment, which are difficult to achieve in other surface treatments. The review highlights the diversity of fabrication methods and provides perspectives on future research directions. Introducing secondary components into the liquid matrix of liquid-infused surfaces is a promising strategy with significant potential to create a new class of multifunctional materials. Keywords: Active surfaces; Antimicrobial; Antifouling; Interfaces; Sensing surfaces.
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Affiliation(s)
- Zachary Applebee
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine ME 04469 USA
- Graduate School of Biomedical Science and Engineering, University of Maine ME 04469 USA
| | - Caitlin Howell
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine ME 04469 USA
- Graduate School of Biomedical Science and Engineering, University of Maine ME 04469 USA
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2
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Fujii Y, Ioka H, Minamoto C, Kurisaki I, Tanaka S, Ohta K, Tominaga K. Vibrational frequency fluctuations of poly(N,N-diethylacrylamide) in the vicinity of coil-to-globule transition studied by two-dimensional infrared spectroscopy and molecular dynamics simulations. J Chem Phys 2024; 161:064903. [PMID: 39120037 DOI: 10.1063/5.0218180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 07/24/2024] [Indexed: 08/10/2024] Open
Abstract
Poly(N,N-diethylacrylamide) (PdEA), one of the thermoresponsive polymers, in aqueous solutions has attracted much attention because of its characteristic properties, such as coil-to-globule (CG) transition. We performed two-dimensional infrared spectroscopy and molecular dynamics (MD) simulations to understand the hydration dynamics in the vicinity of the CG transition at the molecular level via vibrational frequency fluctuations of the carbonyl stretching modes in the side chains of PdEA. Furthermore, N,N-diethylpropionamide, a repeating monomer unit of PdEA, is also investigated for comparison. From decays of the frequency-frequency time correlation functions (FFTCFs) of the carbonyl stretching modes, we consider that inhomogeneity of the hydration environments originates from various backbone configurations of PdEA. The degree of the inhomogeneity depends on temperature. Hydration water molecules near the carbonyl groups are influenced by the confinements of the polymers. The restricted reorientation of the embedded water, the local torsions of the backbone, and the rearrangement of the whole structure contribute to the slow spectral diffusion. By performing MD simulations, we calculated the FFTCFs and dynamical quantities, such as fluctuations of the dihedral angles of the backbone and the orientation of the hydration water molecules. The simulated FFTCFs match well with the experimental results, indicating that the retarded water reorientations via the excluded volume effect play an important role in the vibrational frequency fluctuations of the carbonyl stretching mode. It is also found the embedded water molecules are influenced by the local torsions of the backbone structure within the time scales of the spectral diffusion.
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Affiliation(s)
- Yuki Fujii
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai-cho 1-1, Nada, Kobe 657-8501, Japan
| | - Hikaru Ioka
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai-cho 1-1, Nada, Kobe 657-8501, Japan
| | - Chihiro Minamoto
- Department of Applied Chemistry and Biotechnology, Niihama National College of Technology, Yakumo-cho 7-1, Niihama, Ehime 792-8580, Japan
| | - Ikuo Kurisaki
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Shigenori Tanaka
- Department of Computational Science, Graduate School of System Informatics, Kobe University, Rokkodai-cho 1-1, Nada, Kobe 657-8501, Japan
| | - Kaoru Ohta
- Molecular Photoscience Research Center, Kobe University, Rokkodai-cho 1-1, Nada, Kobe 657-8501, Japan
| | - Keisuke Tominaga
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai-cho 1-1, Nada, Kobe 657-8501, Japan
- Molecular Photoscience Research Center, Kobe University, Rokkodai-cho 1-1, Nada, Kobe 657-8501, Japan
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3
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Wei W, Lu P. Designing Dual-Responsive Drug Delivery Systems: The Role of Phase Change Materials and Metal-Organic Frameworks. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3070. [PMID: 38998154 PMCID: PMC11242594 DOI: 10.3390/ma17133070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/04/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024]
Abstract
Stimuli-responsive drug delivery systems (DDSs) offer precise control over drug release, enhancing therapeutic efficacy and minimizing side effects. This review focuses on DDSs that leverage the unique capabilities of phase change materials (PCMs) and metal-organic frameworks (MOFs) to achieve controlled drug release in response to pH and temperature changes. Specifically, this review highlights the use of a combination of lauric and stearic acids as PCMs that melt slightly above body temperature, providing a thermally responsive mechanism for drug release. Additionally, this review delves into the properties of zeolitic imidazolate framework-8 (ZIF-8), a stable MOF under physiological conditions that decomposes in acidic environments, thus offering pH-sensitive drug release capabilities. The integration of these materials enables the fabrication of complex structures that encapsulate drugs within ZIF-8 or are enveloped by PCM layers, ensuring that drug release is tightly controlled by either temperature or pH levels, or both. This review provides comprehensive insights into the core design principles, material selections, and potential biomedical applications of dual-stimuli responsive DDSs, highlighting the future directions and challenges in this innovative field.
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Affiliation(s)
- Wanying Wei
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, USA
| | - Ping Lu
- Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, USA
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Liu Q, Wang X, Hou Y, Cheng Y, Zhang J, Xiao L, Zhao J, Li W. Bio-inspired Hydrogel Actuator with Rapid Self-strengthening Behavior. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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5
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Xiong C, Ma B, Qiu T, Li X, Shao X, Guo L. In situ insight into the self-assembly evolution of ABA-type block copolymers in water during the gelation process using infrared spectroscopy and near-infrared spectroscopy. Phys Chem Chem Phys 2022; 24:17004-17013. [PMID: 35775968 DOI: 10.1039/d2cp00822j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a kind of thermo-responsive hydrogel, amphiphilic block copolymers are widely investigated. However, the molecular mechanism of their structural change during the gelation process is still limited. Here, a well-controlled triblock copolymer poly(N,N-dimethylacrylamide)-b-poly(diacetone acrylamide)-b-poly(N,N-dimethylacrylamide) (PDMAA-b-PDAAM-b-PDMAA) was synthesized. Its optical microrheology results suggest a gelation temperature range from 42 to 50 °C, showing a transition from viscosity to elasticity. The morphological transition from spheres to worms occurs. Temperature-dependent IR spectra through two-dimensional correlation spectroscopy (2D-COS) and the Gaussian fitting technique were analyzed to obtain the transition information of the molecular structure within the triblock copolymer. The N-way principal component analysis (NPCA) on the temperature-dependent NIR spectra was performed to understand the molecular interaction between water and the copolymer. The intramolecular hydrogen bonds within the hydrophobic PDAAM block tend to dissociate with temperature, resulting in improved hydration and a relative volume increase of the PDAAM block. The dissociation of intermolecular hydrogen bonds within the PDAAM block was the driving force for the morphological transition. Moreover, the hydrophilic PDMAA block dehydrates with temperature, and three stages can be found. The dehydration rate of the second stage with temperature from 42 to 50 °C was obviously higher than those in the lower (first stage) and higher (third stage) temperature ranges.
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Affiliation(s)
- Chongwen Xiong
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Biao Ma
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Teng Qiu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China. .,Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xiaoyu Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China. .,Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xueguang Shao
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
| | - Longhai Guo
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China. .,Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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Morsi SMM, Abd El-Aziz ME, Mohamed HA. Smart polymers as molecular imprinted polymers for recognition of target molecules. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2042287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Samir M. M. Morsi
- Polymer and Pigments Department, National Research Centre, Dokki, Egypt
| | | | - Heba A. Mohamed
- Polymer and Pigments Department, National Research Centre, Dokki, Egypt
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Park Y, Kim M, Noda I, Jung YM. Understanding Thermal Behavior of Poly(ethylene glycol)- block-poly( N-isopropylacrylamide) Hydrogel Using Two-Dimensional Correlation Infrared Spectroscopy. APPLIED SPECTROSCOPY 2021; 75:957-962. [PMID: 33739148 DOI: 10.1177/00037028211006681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, one of the thermoresponsive polymers, block copolymer consisting of poly(ethylene glycol) and poly(N-isopropylacylamide), was investigated using Fourier transform infrared (FT-IR) spectroscopy, principal component analysis (PCA), and two-dimensional correlation spectroscopy (2D-COS). The apparent trend of the spectral changes in the temperature-dependent FT-IR spectra of poly(ethylene glycol)-block-poly(N-isopropylacylamide) (PEG-b-PNiPAAm) hydrogel during the heating process looks similar to that during the cooling process. The results of the PCA and 2D-COS, however, clearly indicate an irreversible phase transition mechanism of PEG-b-PNiPAAm hydrogel during the heating and cooling processes. It has been also shown that PEG affects the phase transition mechanism of PEG-b-PNiPAAm hydrogel, especially during the heating process. Consequently, we can successfully determine the phase transition temperature and the mechanism of PEG-b-PNiPAAm hydrogel during the heating and cooling processes using PCA and 2D-COS, respectively.
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Affiliation(s)
- Yeonju Park
- Kangwon Radiation Convergence Research Support Center, 34962Kangwon National University, Chuncheon, Korea
| | - Minkyoung Kim
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, 34962Kangwon National University, Chuncheon, Korea
| | - Isao Noda
- Department of Materials Science and Engineering, University of Delaware, Newark, USA
| | - Young Mee Jung
- Kangwon Radiation Convergence Research Support Center, 34962Kangwon National University, Chuncheon, Korea
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, 34962Kangwon National University, Chuncheon, Korea
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8
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Park Y, Hwang M, Kim M, Park E, Noda I, Jung YM. Characterization of the phase transition mechanism of P(NiPAAm-co-AAc) copolymer hydrogel using 2D correlation IR spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 252:119525. [PMID: 33582435 DOI: 10.1016/j.saa.2021.119525] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/09/2021] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
A thermo-responsive polymer, poly(N-isopropylacrylamide) (PNiPAAm), was copolymerized with acrylic acid (AAc) in this study. Its phase transitions during the heating and cooling processes were investigated using IR spectroscopy, principal component analysis (PCA), and two-dimensional correlation spectroscopy (2D-COS). During the heating process, the hydrogen bonding between side chain in P(NiPAAm-co-AAc) copolymer hydrogel and H2O was broken first, and then the formation of the intramolecular interaction in P(NiPAAm-co-AAc) copolymer hydrogel occurred. However, unlike the heating process, intensities of bands in the CH stretching region were changed before those in the CO stretching including the NH bending region during the cooling process. The results indicate that the phase transition of P(NiPAAm-co-AAc) copolymer hydrogel is an irreversible process at the molecular levels.
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Affiliation(s)
- Yeonju Park
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Myeongwon Hwang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Minkyoung Kim
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Eungyeong Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Isao Noda
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Young Mee Jung
- Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon 24341, Republic of Korea; Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea.
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9
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Gobeze HB, Ma J, Leonik FM, Kuroda DG. Bottom-Up Approach to Assess the Molecular Structure of Aqueous Poly( N-Isopropylacrylamide) at Room Temperature via Infrared Spectroscopy. J Phys Chem B 2020; 124:11699-11710. [PMID: 33306373 PMCID: PMC7872429 DOI: 10.1021/acs.jpcb.0c08424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The structure of poly(N-isopropylacrylamide) (PNIPAM) in solution is still an unresolved topic. Here, the PNIPAM structure in water was investigated using a bottom-up approach, involving the monomer, dimer, and trimer, and a combination of infrared (IR) spectroscopies as well as molecular dynamics simulations. The experiments show that the monomer and oligomers exhibit a broad and asymmetric amide I band with two underlying transitions, while PNIPAM presents the same major transitions and a minor one. Analysis of the 2D IR spectra and theoretical modeling of the amide I band indicates that the two transitions of the monomer do not have the same molecular origin as the oligomers and the polymer. In the monomer, the two bands originate from the ultrafast rotation of its ethyl group, which leads to different solvation structures for the various rotational conformers. In the case of the oligomers, the asymmetry and splitting of the amide I band is caused by the vibrational coupling among adjacent amide side chains. Moreover, it is deduced from the simulations that the oligomers have three distinct backbone conformations for neighboring amides. In particular, two of the backbone conformations have a closed and compact structure, while in the third, the backbone is open and elongated. The bottom-up approach allowed us to infer that such backbone conformations exist in PNIPAM as well. Consequently, the two major amide I transitions of the polymer are also assigned to split amide I transitions resulting from the vibrationally coupled nearest-neighboring amides. In contrast, the additional minor transition observed in PNIPAM is assigned to unsolvated amide units of the polymer. The proposed molecular model successfully describes that PNIPAM amide I band changes with temperature in terms of its molecular structure. This new model strongly suggests that PNIPAM does not have a completely random backbone structure, but has distinct backbone conformers between neighboring amides.
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Affiliation(s)
- Habtom B Gobeze
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Jianbo Ma
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Fedra M Leonik
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Daniel G Kuroda
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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González-Sálamo J, Ortega-Zamora C, Carrillo R, Hernández-Borges J. Application of stimuli-responsive materials for extraction purposes. J Chromatogr A 2020; 1636:461764. [PMID: 33316565 DOI: 10.1016/j.chroma.2020.461764] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/21/2020] [Accepted: 11/24/2020] [Indexed: 12/21/2022]
Abstract
Stimuli-responsive materials, frequently designated as "smart/intelligent materials", can modify their structure or properties by either a biological, physical, or chemical stimulus which, if properly controlled, could be used for specific applications. Such materials have been studied and exploited in several fields, like electronics, photonics, controlled drugs administration, imaging and medical diagnosis, among others, as well as in Analytical Chemistry where they have been used as chromatographic stationary phases, as part of sensors and for extraction purposes. This review article pretends to provide an overview of the most recent applications of these materials (mostly polymeric materials) in sample preparation for extraction purposes, as well as to provide a general vision of the current state-of-the-art of this field, their potential use and future applications.
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Affiliation(s)
- Javier González-Sálamo
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n. 38206 San Cristóbal de La Laguna, España; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n. 38206 San Cristóbal de La Laguna, España.
| | - Cecilia Ortega-Zamora
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n. 38206 San Cristóbal de La Laguna, España
| | - Romen Carrillo
- Instituto de Productos Naturales y Agrobiología IPNA-CSIC. Avda. Astrofísico Fco. Sánchez, 3. 38206 San Cristóbal de La Laguna, España
| | - Javier Hernández-Borges
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n. 38206 San Cristóbal de La Laguna, España; Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n. 38206 San Cristóbal de La Laguna, España.
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Pham SH, Choi Y, Choi J. Stimuli-Responsive Nanomaterials for Application in Antitumor Therapy and Drug Delivery. Pharmaceutics 2020; 12:E630. [PMID: 32635539 PMCID: PMC7408499 DOI: 10.3390/pharmaceutics12070630] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 07/03/2020] [Accepted: 07/04/2020] [Indexed: 01/14/2023] Open
Abstract
The new era of nanotechnology has produced advanced nanomaterials applicable to various fields of medicine, including diagnostic bio-imaging, chemotherapy, targeted drug delivery, and biosensors. Various materials are formed into nanoparticles, such as gold nanomaterials, carbon quantum dots, and liposomes. The nanomaterials have been functionalized and widely used because they are biocompatible and easy to design and prepare. This review mainly focuses on nanomaterials responsive to the external stimuli used in drug-delivery systems. To overcome the drawbacks of conventional therapeutics to a tumor, the dual- and multi-responsive behaviors of nanoparticles have been harnessed to improve efficiency from a drug delivery point of view. Issues and future research related to these nanomaterial-based stimuli sensitivities and the scope of stimuli-responsive systems for nanomedicine applications are discussed.
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Affiliation(s)
| | | | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (S.H.P.); (Y.C.)
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12
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Cheng S, Wang X, Yang H, Lin R, Wang H, Tan M. Characterization of moisture migration of beef during refrigeration storage by low-field NMR and its relationship to beef quality. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:1940-1948. [PMID: 31846075 DOI: 10.1002/jsfa.10206] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/22/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND In this study, low-field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI) were used to investigated the moisture migration of beef during refrigeration storage, and its relationships to some physicochemical quality indicators were analyzed using partial least squares regression. RESULTS Three water components ascribed to bound water, immobilized water and free water in beef matrix were revealed by LF-NMR relaxation results. The transverse relaxation time and peak area of immobilized water declined as storage proceeded, as a result of disruption to the microstructure revealed by scanning electron microscope images. MRI images found obvious water migration of beef during refrigeration storage, and scanning electron microscopy images revealed that the integrity of the muscle fiber bundle was destroyed. In addition, increased storage time also led to increases in pH, total volatile basic nitrogen, TBARS (thiobarbituric acid reactive substances) value, weight loss, cooking loss and b* value, and to decreases in water holding capacity (WHC), L* and a* values, and textural properties. CONCLUSION The strong correlations between water migration and the physicochemical quality changes suggested the possibility of LF-NMR as a rapid and non-invasive method to evaluate beef quality. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Shasha Cheng
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, People's Republic of China
- National Engineering Research Center of Seafood, Dalian, People's Republic of China
- Engineering Research Center of Seafood of Ministry of Education of China, Dalian, People's Republic of China
| | - Xiaohui Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, People's Republic of China
- National Engineering Research Center of Seafood, Dalian, People's Republic of China
- Engineering Research Center of Seafood of Ministry of Education of China, Dalian, People's Republic of China
| | - Huimin Yang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, People's Republic of China
- National Engineering Research Center of Seafood, Dalian, People's Republic of China
- Engineering Research Center of Seafood of Ministry of Education of China, Dalian, People's Republic of China
| | - Rong Lin
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, People's Republic of China
- National Engineering Research Center of Seafood, Dalian, People's Republic of China
- Engineering Research Center of Seafood of Ministry of Education of China, Dalian, People's Republic of China
| | - Haitao Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, People's Republic of China
- National Engineering Research Center of Seafood, Dalian, People's Republic of China
- Engineering Research Center of Seafood of Ministry of Education of China, Dalian, People's Republic of China
| | - Mingqian Tan
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, People's Republic of China
- National Engineering Research Center of Seafood, Dalian, People's Republic of China
- Engineering Research Center of Seafood of Ministry of Education of China, Dalian, People's Republic of China
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Simonova MA, Khairullin AR, Tyurina VO, Filippov AP, Sadikov AY, Kamorin DM, Kamorina SI. Self-Organization Processes in Poly(N-[2-(diethylamino)ethyl]acrylamide) Buffer Solutions with Change in Concentration and pH of a Medium. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x20010113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Gao Y, Li Z, Huang J, Zhao M, Wu J. In situ formation of injectable hydrogels for chronic wound healing. J Mater Chem B 2020; 8:8768-8780. [PMID: 33026387 DOI: 10.1039/d0tb01074j] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hydrogels have been widely used in wound healing treatment over the past decade.
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Affiliation(s)
- Yunfen Gao
- School of Biomedical Engineering
- Sun Yat-sen University
- Shenzhen
- China
| | - Zhen Li
- School of Biomedical Engineering
- Sun Yat-sen University
- Shenzhen
- China
| | - Jun Huang
- School of Biomedical Engineering
- Sun Yat-sen University
- Shenzhen
- China
- The Seventh Affiliated Hospital of Sun Yat-Sen University
| | - Meng Zhao
- Shenzhen Lansi Institute of Artificial Intelligence in Medicine
- Shenzhen
- China
| | - Jun Wu
- School of Biomedical Engineering
- Sun Yat-sen University
- Shenzhen
- China
- The Seventh Affiliated Hospital of Sun Yat-Sen University
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15
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Enthalpy-Driven Transition of Liquid Crystalline Textures of Poly(2-cyano-p-phenylene terephthalamide) in N,N-Dimethyl Acetamide/Lithium Chloride. Macromol Res 2019. [DOI: 10.1007/s13233-019-7058-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Raza A, Rasheed T, Nabeel F, Hayat U, Bilal M, Iqbal HMN. Endogenous and Exogenous Stimuli-Responsive Drug Delivery Systems for Programmed Site-Specific Release. Molecules 2019; 24:E1117. [PMID: 30901827 PMCID: PMC6470858 DOI: 10.3390/molecules24061117] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 02/05/2023] Open
Abstract
In this study, we reviewed state-of-the-art endogenous-based and exogenous-based stimuli-responsive drug delivery systems (DDS) for programmed site-specific release to overcome the drawbacks of conventional therapeutic modalities. This particular work focuses on the smart chemistry and mechanism of action aspects of several types of stimuli-responsive polymeric carriers that play a crucial role in extracellular and intracellular sections of diseased tissues or cells. With ever increasing scientific knowledge and awareness, research is underway around the globe to design new types of stimuli (external/internal) responsive polymeric carriers for biotechnological applications at large and biomedical and/or pharmaceutical applications, in particular. Both external/internal and even dual/multi-responsive behavior of polymeric carriers is considered an essential element of engineering so-called 'smart' DDS, which controls the effective and efficient dose loading, sustained release, individual variability, and targeted permeability in a sophisticated manner. So far, an array of DDS has been proposed, developed, and implemented. For instance, redox, pH, temperature, photo/light, magnetic, ultrasound, and electrical responsive DDS and/or all in all dual/dual/multi-responsive DDS (combination or two or more from any of the above). Despite the massive advancement in DDS arena, there are still many challenging concerns that remain to be addressed to cover the research gap. In this context, herein, an effort has been made to highlight those concerning issues to cover up the literature gap. Thus, the emphasis was given to the drug release mechanism and applications of endogenous and exogenous based stimuli-responsive DDS in the clinical settings.
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Affiliation(s)
- Ali Raza
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Tahir Rasheed
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Faran Nabeel
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Uzma Hayat
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey CP 64849, Mexico.
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Suzuki Y, Furuya H. Insights into the helix-sense inversion of poly(β-phenethyl-L-aspartate) by two-dimensional Raman correlation spectroscopy. J Pept Sci 2018; 24:e3079. [PMID: 29624787 DOI: 10.1002/psc.3079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/06/2018] [Accepted: 03/09/2018] [Indexed: 01/30/2023]
Abstract
In this study, the transition process of the helix-sense inversion of poly(β-phenethyl-L-aspartate) was investigated by Raman scattering and 2-dimensional correlation spectroscopy. Temperature-dependent Raman spectra were obtained during the helix-sense inversion. The results of 2-dimensional correlation analysis in the spectral regions of 1600-1800 and 3200-3400 cm-1 showed that the intensity changes of the side-chain ester C═O stretching bands occurred prior to those of amide A and amide I bands in the unwinding process of αR-helix on heating. The sequential order of the intensity changes for amide A, amide I, and the side-chain ester C═O stretching bands during the inversion process was determined. It was found that the conformation change of the side chain occurred prior to that of the main chain for the αR-helix on heating. Thus, we concluded that the transformation of the backbone chain from right-handed to left-handed is triggered by the conformational change of the side chains.
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Affiliation(s)
- Yuki Suzuki
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1-S1-20 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hidemine Furuya
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-S1-20 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
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