1
|
Mondal S, Pyne S, Pyne P, Patra A, Mitra RK, Ghosh S. Interfacial Structure and Electrostatics Related to Solute Activity in a Model Anionic-Surfactant/Polymer Self-Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2850-2858. [PMID: 36758211 DOI: 10.1021/acs.langmuir.2c03447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Polymer/surfactant composites are used in industry as an excipient for water-insoluble solutes. Such enhanced dissolution ability of composite media is related to the spontaneous formation of pre-micellar polymer surfactant aggregates (PS) at a magnitude of order lower than the surfactant critical micelle concentration in water. Combining electrochemical and spectroscopic studies, we investigate the microscopic interfacial structure (i.e., interface electrostatics and surface polarity) of PS formed in composite media. We establish that in a composite system, a mere change in the polymer concentration at a fixed surfactant concentration makes possible to regulate the counter-ion binding ability, surface potential, surface charge density, packing and surface polarity of the PS interface. Our study shows that the higher dissolution of water-insoluble nonionic solutes in composite media is driven by the depressing of surface charge density and polarity of the PS interface. A similar modulation of the PS interface acts as a barrier for the passive relocation of water-soluble charged solutes into the PS pseudo-phase. The time-resolved fluorescence anisotropy study allows us to underline the effect of surface charge modulation on the dynamical aspects of solutes at the PS interface.
Collapse
Affiliation(s)
- Sonali Mondal
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Sumana Pyne
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700106, India
| | - Partha Pyne
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700106, India
| | - Animesh Patra
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700106, India
| | - Rajib Kumar Mitra
- Department of Chemical and Biological Sciences, S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700106, India
| | - Soumen Ghosh
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
| |
Collapse
|
2
|
Luo GF, Chen WH, Zhang XZ. 100th Anniversary of Macromolecular Science Viewpoint: Poly( N-isopropylacrylamide)-Based Thermally Responsive Micelles. ACS Macro Lett 2020; 9:872-881. [PMID: 35648534 DOI: 10.1021/acsmacrolett.0c00342] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm)-based thermally responsive micelles are of great importance as smart materials for a number of applications such as drug delivery and biosensing, owing to their tunable lower critical solution temperature (LCST). Their design and synthesis in the nanoscale size range have been widely studied, and research interest in their structural and physic-chemical properties is continually growing. In this Viewpoint, representative research on the construction of PNIPAAm-based thermally responsive micelles as well as their applications are highlighted and discussed, which would serve as a good start for newcomers in this field and a positive guide for future research.
Collapse
Affiliation(s)
- Guo-Feng Luo
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Wei-Hai Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, People’s Republic of China
| |
Collapse
|
3
|
Fanova A, Šindelka K, Uchman M, Limpouchová Z, Filippov SK, Pispas S, Procházka K, Štěpánek M. Coassembly of Poly(N-isopropylacrylamide) with Dodecyl and Carboxyl Terminal Groups with Cationic Surfactant: Critical Comparison of Experimental and Simulation Data. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anastasiia Fanova
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Karel Šindelka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Mariusz Uchman
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Sergey K. Filippov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovský Sq. 2, 16206 Prague 6, Czech Republic
| | - Stergios Pispas
- Theoretical & Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Miroslav Štěpánek
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
| |
Collapse
|
4
|
Sahn M, Stafast LM, Dirauf M, Bandelli D, Weber C, Schubert US. LCST behavior of poly(2-ethyl-2-oxazoline) containing diblock and triblock copolymers. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.01.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
5
|
Khimani M, Yusa S, Nagae A, Enomoto R, Aswal V, Kesselman E, Danino D, Bahadur P. Self-assembly of multi-responsive poly(N-isopropylacrylamide)-b-poly(N,N-dimethylaminopropylacrylamide) in aqueous media. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.05.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
6
|
Wang Q, Tang H, Wu P. Aqueous Solutions of Poly(ethylene oxide)-Poly(N-isopropylacrylamide): Thermosensitive Behavior and Distinct Multiple Assembly Processes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6497-6506. [PMID: 26010200 DOI: 10.1021/acs.langmuir.5b00878] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Detailed phase transition and conformational changes taking place as a function of temperature in poly(ethylene oxide)-b-poly(N-isopropylacrylamide) (PEO-b-PNIPAM) semidiluted aqueous solutions are elucidated in the present study. By the use of elaborate vibrational spectroscopy techniques in combination with two-dimensional correlation spectroscopy (2Dcos), three transition regions including respective rich domains (<29 °C), loose aggregations (30-36 °C), and dense sphere micelles (>37 °C) are depicted. In particular, subtle variations of hydrogen bonds are detected even under the lower critical solution temperature (LCST), and the respective rich domain regime is marked with strong participation from hydrogen bonding at different concentrations and compositions. Both the formation of intermolecular hydrogen bonds and the less hydration degrees of PNIPAM segments compared with PNIPAM homopolymer at elevated temperatures verify the evolution of PNIPAM from their own domains to loose aggregations with PEO shells. Dense micelles are formed beyond the LCST of PNIPAM, while the outmost PEOs act as buffer layers and postpone the shrinkage of PNIPAM chains. Due to the existence of a buffer layer, higher phase transition temperatures compared with PNIPAM homopolymer are observed.
Collapse
Affiliation(s)
- Qiuwen Wang
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| | - Hui Tang
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| | - Peiyi Wu
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| |
Collapse
|
7
|
Enomoto R, Khimani M, Bahadur P, Yusa SI. pH-responsive micelles and vesicles formed from a water-soluble schizophrenic diblock copolymer. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.04.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
8
|
Daktiloudis A, Chronaios A, Mavriki N, Iatridi Z, Bokias G. Doubly-grafted copolymers with hydrophilic and thermosensitive side chains: thermosensitivity and complexation with surfactants. J Colloid Interface Sci 2014; 430:293-301. [PMID: 24973703 DOI: 10.1016/j.jcis.2014.05.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 05/30/2014] [Accepted: 05/31/2014] [Indexed: 10/25/2022]
Abstract
The behavior in aqueous solution of the doubly-grafted anionic polyelectrolyte poly(sodium 2-acrylamido-2-methylpropanesulfonate-co-sodium acrylate-)-g-poly(N-isopropylacry-lamide)-g-poly(N,N-dimethylacrylamide), P(AMPSNa-co-ANa)-g-PNIPAM-g-PDMAM, was compared to that of the single-grafted anionic polyelectrolyte poly(sodium 2-acrylamido-2-methylpropanesulfonate-co-sodium acrylate)-g-poly(N-isopropylacrylamide), P(AMPSNa-co-ANa)-g-PNIPAM. The investigation through turbidimetry, pyrene fluorescence probing, viscometry and dynamic light scattering revealed that the existence of the hydrophilic poly(N,N-dimethylacrylamide), PDMAM, side chains in the doubly-grafted copolymer P(AMPSNa-co-ANa)-g-PNIPAM-g-PDMAM did not perturb the thermoresponsiveness of the poly(N-isopropylacrylamide), PNIPAM, side chains, but favoured the stabilization in water of the core-corona nanoparticles, formed upon heating the aqueous solution above the Lower Critical Solution Temperature (LCST) of PNIPAM chains. In a similar manner, the complexes formed between the cationic surfactant N,N,N,N-dodecyltrimethylammonium chloride, DTAC, and the oppositely charged backbone of the doubly-grafted copolymer P(AMPSNa-co-ANa)-g-PNIPAM-g-PDMAM were stabilized in water by the PDMAM side chains. Thus, phase separation was prevented upon heating the aqueous solution above LCST. Moreover, the (1)H NMR study revealed that the fraction of PNIPAM chains forming solid-like aggregates at high temperature increased substantially in the presence of DTAC, as a consequence of the net charge decrease of the backbone due to the polymer/DTAC complexation.
Collapse
Affiliation(s)
- Aris Daktiloudis
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | | | - Niki Mavriki
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | | | - Georgios Bokias
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece.
| |
Collapse
|
9
|
Pinedo-Martín G, Castro E, Martín L, Alonso M, Rodríguez-Cabello JC. Effect of surfactants on the self-assembly of a model elastin-like block corecombinamer: from micelles to an aqueous two-phase system. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3432-3440. [PMID: 24611880 DOI: 10.1021/la500464v] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Recent advances in genetic engineering now allow the synthesis of protein-based block corecombinamers derived from elastin-like peptide sequences with complete control of chemistry and molecular weight, thereby resulting in unique physical and biological properties. The individual blocks of the elastin-like block corecombinamers (ELbcR's) display different phase behaviors in aqueous solution, which leads to the thermally triggered self-assembly of nano-objects ranging from micelles to vesicles. Herein, the interaction of cationic surfactant dodecyl trimethylammonium bromide (DTAB), anionic surfactant dodecyl sodium sulfate (SDS), and nonionic surfactant octyl-β-glucopyranoside (OG) with an ELbcR has been investigated by dynamic light scattering (DLS), the ζ potential and cryo-transmission electron microscopy (cryo-TEM). At 65 °C and neutral pH in aqueous solution, the ELbcR (E50A40) is associated into micelles with a diameter of 150 nm comprising a hydrophobic (A) core and a hydrophilic (E) anionic (from the glutamic acid residues) corona. The size of these self-assemblies can be controlled by adjusting the cosurfactant concentrations. Although the effects of surfactants on the self-assembly behavior of ELbcR's depend on the hydrocarbon chain length and headgroup of the surfactants, a general tendency to increase in size, which in some cases leads to flocculation and a phase-separated state, is observed. These results support the use of surfactants as a highly interesting means of controlling the self-assembly of ELbcR's in aqueous solution as well as their use in drug delivery and purification processes.
Collapse
Affiliation(s)
- Guillermo Pinedo-Martín
- Bioforge Group, University of Valladolid, CIBER-BBN , Paseo de Belén 11, 47011 Valladolid, Spain
| | | | | | | | | |
Collapse
|
10
|
Henderson IM, Adams PG, Montaño GA, Paxton WF. Ionic effects on the behavior of thermoresponsive PEO-PNIPAAm block copolymers. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/polb.23444] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ian M. Henderson
- Center for Integrated Nanotechnologies; Sandia National Laboratories; Albuquerque New Mexico 87185
| | - Peter G. Adams
- Center for Integrated Nanotechnologies; Los Alamos National Laboratory; Los Alamos New Mexico 87544
| | - Gabriel A. Montaño
- Center for Integrated Nanotechnologies; Los Alamos National Laboratory; Los Alamos New Mexico 87544
| | - Walter F. Paxton
- Center for Integrated Nanotechnologies; Sandia National Laboratories; Albuquerque New Mexico 87185
| |
Collapse
|
11
|
Liu P, Liang J, Chen S, Zhang H. Bulk and solution properties of a thermo-responsive rod–coil block polymer based on poly(N-isopropylacrylamide). RSC Adv 2014. [DOI: 10.1039/c4ra07179d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Molecular weight dependence on thermoresponsive behaviors of rod–coil diblock copolymers (x indicates the DP of rod PHIPPVTA blocks).
Collapse
Affiliation(s)
- Peng Liu
- Key Laboratory of Polymeric Materials & Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan, China
| | - Jiexing Liang
- Key Laboratory of Polymeric Materials & Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan, China
| | - Shen Chen
- Key Laboratory of Polymeric Materials & Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan, China
| | - Hailiang Zhang
- Key Laboratory of Polymeric Materials & Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan, China
| |
Collapse
|
12
|
Oikonomou EK, Bokias G, Iliopoulos I, Kallitsis JK. Sequential Association of Anionic/Thermosensitive Diblock Copolymers with Cationic Surfactants. Macromolecules 2013. [DOI: 10.1021/ma302535k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Evdokia K. Oikonomou
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
- Foundation of Research and Technology
Hellas, Institute of Chemical Engineering Sciences (ICE/HT FORTH), P.O. Box 1414, GR-26504 Patras, Greece
| | - Georgios Bokias
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Ilias Iliopoulos
- Matiere Molle et Chimie, ESPCI ParisTech - CNRS, UMR-7167, 75005 Paris, France
| | - Joannis K. Kallitsis
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
- Foundation of Research and Technology
Hellas, Institute of Chemical Engineering Sciences (ICE/HT FORTH), P.O. Box 1414, GR-26504 Patras, Greece
| |
Collapse
|
13
|
Yang K, Gao T, Bao Z, Su J, Chen X. Preparation and characterization of a novel thermosensitive nanoparticle for drug delivery in combined hyperthermia and chemotherapy. J Mater Chem B 2013; 1:6442-6448. [DOI: 10.1039/c3tb20772b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Peng B, Grishkewich N, Yao Z, Han X, Liu H, Tam KC. Self-Assembly Behavior of Thermoresponsive Oligo(ethylene glycol) Methacrylates Random Copolymer. ACS Macro Lett 2012; 1:632-635. [PMID: 35607076 DOI: 10.1021/mz300135x] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A well-defined random copolymer containing 2-(2-methoxyethoxy) ethyl methacrylate (MEO2MA, Mn = 188 g/mol) and poly(ethylene glycol) methyl ether methacrylate (PEGMA, Mn = 2080 g/mol) (poly(MEO2MA-co-PEGMA2080)), Mn = 17300 g/mol) was synthesized using the atom transfer radical polymerization (ATRP) process, and its thermoresponsive behaviors in aqueous solution were investigated. In comparison to other temperature-sensitive random copolymers based on oligo(ethylene glycol) methacrylates, this copolymer exhibited an unusual thermally induced two-stage aggregation process. The copolymer chains associate at the first thermal transition followed by a rearrangement process at the second thermal transition to produce a stable core-shell micellar structure. The morphology of the micelle comprises of a methacrylate core stabilized by the longer ethylene glycol segments (Mn = 2080 g/mol) shell.
Collapse
Affiliation(s)
- Baoliang Peng
- Department of Chemical
Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West,
Waterloo, Ontario, Canada N2L 3G1
- Department of Chemistry, East China University of Science and Technology, 130 Meilong
Road, Shanghai 200237, People's Republic of China
| | - Nathan Grishkewich
- Department of Chemical
Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West,
Waterloo, Ontario, Canada N2L 3G1
| | - Zhaoling Yao
- Department of Chemical
Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West,
Waterloo, Ontario, Canada N2L 3G1
| | - Xia Han
- Department of Chemistry, East China University of Science and Technology, 130 Meilong
Road, Shanghai 200237, People's Republic of China
| | - Honglai Liu
- Department of Chemistry, East China University of Science and Technology, 130 Meilong
Road, Shanghai 200237, People's Republic of China
| | - Kam C. Tam
- Department of Chemical
Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West,
Waterloo, Ontario, Canada N2L 3G1
| |
Collapse
|
15
|
Huang HC, Nanda A, Rege K. Investigation of phase separation behavior and formation of plasmonic nanocomposites from polypeptide-gold nanorod nanoassemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6645-6655. [PMID: 22394160 DOI: 10.1021/la203340y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Genetically engineered elastin-like polypeptides (ELP) can be interfaced with cetyltrimethyl ammonium bromide (CTAB)-stabilized gold nanorods (GNRs) resulting in the formation of stable dispersions (nanoassemblies). Increasing the dispersion temperature beyond the ELP transition temperature results in phase separation and formation of solid-phase ELP-GNR matrices (nanocomposites). Here, we investigated different physicochemical conditions that influence nanocomposite formation from temperature-induced phase separation of ELP-GNR nanoassemblies. The presence of cetyltrimethyl ammonium bromide (CTAB), used to template the formation of gold nanorods, plays a significant role in the phase separation behavior, with high concentrations of the surfactant leading to dramatic enhancements in ELP transition temperature. Nanocomposites could be generated at 37 °C in the presence of low CTAB concentrations (<1.5 mM); higher concentrations of CTAB necessitated higher temperatures (60 °C) due to elevated transition temperatures. The concentration of gold nanorods, however, had minimal influence on the phase separation behavior and nanocomposite formation. Further analysis of the kinetics of nanocomposite formation using a mathematical model indicated that CTAB largely influenced the early event of coacervation of ELP-GNR nanoassemblies leading to nanocomposites, but had minimal effect on nanocomposite maturation, which is a later-stage longer event. Finally, nanocomposites prepared in the presence of low CTAB concentrations demonstrated a superior photothermal response following laser irradiation compared to those generated using higher CTAB concentrations. Our results on understanding the formation of plasmonic/photothermal ELP-GNR nanocomposites have significant implications for tissue engineering, regenerative medicine, and drug delivery.
Collapse
Affiliation(s)
- Huang-Chiao Huang
- Chemical Engineering, Arizona State University , Tempe, Arizona 85287-6106, United States
| | | | | |
Collapse
|
16
|
Luo YL, Zhang LL, Xu F. Synthesis, thermo-responsive micellization and caffeine drug release of novel PBMA-b-PNIPAAm block polymer brushes. POLYMER SCIENCE SERIES A 2012. [DOI: 10.1134/s0965545x12040049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
17
|
Lu A, Liu Y, Zhang L, Potthast A. Investigation on Metastable Solution of Cellulose Dissolved in NaOH/Urea Aqueous System at Low Temperature. J Phys Chem B 2011; 115:12801-8. [DOI: 10.1021/jp206643f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ang Lu
- Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Yating Liu
- Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Lina Zhang
- Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
| | - Antje Potthast
- Department of Chemistry, University of Natural Resources and Applied Life Sciences, Vienna, Austria
| |
Collapse
|
18
|
Light scattering study on the dynamic behaviour of cellulose inclusion complex in LiOH/urea aqueous solution. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.06.034] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
19
|
Chen J, Gong X, Yang H, Yao Y, Xu M, Chen Q, Cheng R. NMR Study on the Effects of Sodium n-Dodecyl Sulfate on the Coil-to-Globule Transition of Poly(N-isopropylacrylamide) in Aqueous Solutions. Macromolecules 2011. [DOI: 10.1021/ma201269u] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianqiang Chen
- Key Laboratory of Mesoscopic Chemistry of MOE, Department of Polymer Science and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaoliang Gong
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, P. R. China
| | - Hu Yang
- Key Laboratory of Mesoscopic Chemistry of MOE, Department of Polymer Science and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Yefeng Yao
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, P. R. China
| | - Min Xu
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, P. R. China
| | - Qun Chen
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, P. R. China
| | - Rongshi Cheng
- Key Laboratory of Mesoscopic Chemistry of MOE, Department of Polymer Science and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
- College of Material Science and Engineering, Polymer Institute, South China University of Technology, Guangzhou, Guangdong 510640, P. R. China
| |
Collapse
|
20
|
Ye X, Fei J, Xu K, Bai R. Effect of polystyrene-b-poly(ethylene oxide) on self-assembly of polystyrene-b-poly(N-isopropylacrylamide) in aqueous solution. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|