1
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Kim S, Zhou X, Li Y, Yang Q, Liu X, Graf R, Blom PWM, Ferguson CTJ, Landfester K. Size-Dependent Photocatalytic Reactivity of Conjugated Microporous Polymer Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2404054. [PMID: 38925104 DOI: 10.1002/adma.202404054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/10/2024] [Indexed: 06/28/2024]
Abstract
Particle size is a critical factor for improving photocatalytic reactivity of conjugated microporous polymers (CMPs) as mass transfer in the porous materials is often the rate-limiting step. However, due to the synthetic challenge of controlling the size of CMPs, the impact of particle size is yet to be investigated. To address this problem, a simple and versatile dispersion polymerization route that can synthesize dispersible CMP nanoparticles with controlled size from 15 to 180 nm is proposed. Leveraging the precise control of the size, it is demonstrated that smaller CMP nanoparticles have dramatically higher photocatalytic reactivity in various organic transformations, achieving more than 1000% enhancement in the reaction rates by decreasing the size from 180 to 15 nm. The size-dependent photocatalytic reactivity is further scrutinized using a kinetic model and transient absorption spectroscopy, revealing that only the initial 5 nm-thick surface layer of CMP nanoparticles is involved in the photocatalytic reactions because of internal mass transfer limitations. This finding substantiates the potential of small CMP nanoparticles to efficiently use photo-generated excitons and improve energy-efficiency of numerous photocatalytic reactions.
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Affiliation(s)
- Seunghyeon Kim
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Xin Zhou
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Yungui Li
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Qiqi Yang
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Xiaomin Liu
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Robert Graf
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Paul W M Blom
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Calum T J Ferguson
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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2
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Gill N, Srivastava I, Tropp J. Rational Design of NIR-II Emitting Conjugated Polymer Derived Nanoparticles for Image-Guided Cancer Interventions. Adv Healthc Mater 2024:e2401297. [PMID: 38822530 DOI: 10.1002/adhm.202401297] [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: 04/08/2024] [Revised: 05/26/2024] [Indexed: 06/03/2024]
Abstract
Due to the reduced absorption, light scattering, and tissue autofluorescence in the NIR-II (1000-1700 nm) region, significant efforts are underway to explore diverse material platforms for in vivo fluorescence imaging, particularly for cancer diagnostics and image-guided interventions. Of the reported imaging agents, nanoparticles derived from conjugated polymers (CPNs) offer unique advantages to alternative materials including biocompatibility, remarkable absorption cross-sections, exceptional photostability, and tunable emission behavior independent of cell labeling functionalities. Herein, the current state of NIR-II emitting CPNs are summarized and structure-function-property relationships are highlighted that can be used to elevate the performance of next-generation CPNs. Methods for particle processing and incorporating cancer targeting modalities are discussed, as well as detailed characterization methods to improve interlaboratory comparisons of novel materials. Contemporary methods to specifically apply CPNs for cancer diagnostics and therapies are then highlighted. This review not only summarizes the current state of the field, but offers future directions and provides clarity to the advantages of CPNs over other classes of imaging agents.
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Affiliation(s)
- Nikita Gill
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
| | - Indrajit Srivastava
- Texas Center for Comparative Cancer Research (TC3R), Amarillo, TX, 79106, USA
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX, 79409, USA
| | - Joshua Tropp
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, 79409, USA
- Texas Center for Comparative Cancer Research (TC3R), Amarillo, TX, 79106, USA
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3
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Sbordone F, Veskova J, Richardson B, Do PT, Micallef A, Frisch H. Embedding Peptides into Synthetic Polymers: Radical Ring-Opening Copolymerization of Cyclic Peptides. J Am Chem Soc 2023; 145:6221-6229. [PMID: 36898136 DOI: 10.1021/jacs.2c12517] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Biopolymers such as proteins and nucleic acids are the key building blocks of life. Synthetic polymers have nevertheless revolutionized our everyday life through their robust synthetic accessibility. Combining the unmatched functionality of biopolymers with the robustness of tailorable synthetic polymers holds the promise to create materials that can be designed ad hoc for a wide array of applications. Radical polymerization is the most widely applied polymerization technique in both fundamental science and industrial polymer production. While this polymerization technique is robust and well controlled, it generally yields unfunctional all-carbon backbones. Combinations of natural polymers such as peptides, with synthetic polymers, are thus limited to tethering peptides onto the side chains or chain ends of the latter. This synthetic limitation is a critical restraint, considering that the function of biopolymers is programmed into the sequence of their main chain (i.e., primary structure). Here, we report the radical copolymerization of peptides and synthetic comonomers yielding synthetic polymers with defined peptide sequences embedded into their main chain. Key was the development of a solid-phase peptide synthesis (SPPS) approach to generate synthetic access to peptide conjugates containing allylic sulfides. Following cyclization, the obtained peptide monomers can be readily copolymerized with N,N-dimethylacrylamide (DMA)─controlled by reversible addition-fragmentation chain transfer (RAFT). Importantly, the developed synthetic strategy is compatible with all 20 standard amino acids and uses exclusively standard SPPS chemicals or chemicals accessible in one-step synthesis─prerequisite for widespread and universal application.
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Affiliation(s)
- Federica Sbordone
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Juliet Veskova
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Bailey Richardson
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Phuong Thi Do
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Aaron Micallef
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Central Analytical Research Facility, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Hendrik Frisch
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
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4
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Chen L, Rudolf T, Blinder R, Suryadevara N, Dalmeida A, Welscher PJ, Lamla M, Arnold M, Herr U, Jelezko F, Ruben M, Kuehne AJC. Red-Fluorescing Paramagnetic Conjugated Polymer Nanoparticles─Triphenyl Methyl Radicals as Monomers in C–C Cross-Coupling Dispersion Polymerization. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- Lisa Chen
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Tamara Rudolf
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Rémi Blinder
- Institute for Quantum Optics, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Nithin Suryadevara
- Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ashley Dalmeida
- Institute for Functional Nanosystems, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany
| | - Philipp J. Welscher
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Markus Lamla
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Mona Arnold
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Ulrich Herr
- Institute for Functional Nanosystems, Ulm University, Albert-Einstein-Allee 47, 89081 Ulm, Germany
| | - Fedor Jelezko
- Institute for Quantum Optics, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Mario Ruben
- Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Centre Européen de Sciences Quantiques (CESQ), Institut de Science et d’Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, BP 70028, 67083 Strasbourg, France
| | - Alexander J. C. Kuehne
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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5
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Liu X, Wang F, Liu L, Li T, Zhong X, Lin H, Zhang Y, Xue W. Functionalized polydopamine nanospheres as in situ spray for photothermal image-guided tumor precise surgical resection. Biosens Bioelectron 2023; 222:114995. [PMID: 36516631 DOI: 10.1016/j.bios.2022.114995] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/18/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Surgical resection is a critical procedure for treatment of solid tumor, which commonly suffers from postoperative local recurrence due to the possibility of positive surgical margin. Although the widely used clinical imaging techniques (CT, MRI, PET, etc.) show beneficial effects in providing a macroscopic view of preoperative tumor position, they are still failing to provide intraoperative real-time imaging navigation during the surgery and need oral or intravenous injection contrast agents with risk of adverse effects. In this work, we present a nano-spray assisted photothermal imaging system for in vitro cells discrimination as well as in vivo visualization of tumor position and border that guides real-time precise tumor resection during surgery (even for tiny tumor less than 3 mm). Herein, the nano-spray were prepared by RGD peptide functionalized polydopamine (PDA-RGD) nanospheres with excellent photothermal conversion efficiency (54.27%), stability and reversibility, which target ανβ3 integrin overexpressed tumor cells. Such PDA-RGD serve as nanothermometers that convert and amplify biological signal to intuitive thermal image signal, depicting the tumor margin in situ. In comparison to conventional imaging techniques, our approach through topical spraying together with portable infrared camera has the characteristics of low cost, convenient, no radiation hazard, real-time intraoperative imaging-guidance and avoiding the adverse effects risk of oral or intravenous contrast agent. This technology provides a new universal tool for potentially assisting surgeons' decision in real-time during surgery and aiding to improved outcome.
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Affiliation(s)
- Xin Liu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China; Center for Hybrid Nanostructure (CHyN), Department of Physics, University of Hamburg, Hamburg, 22761, Germany
| | - Fan Wang
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China
| | - Li Liu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China
| | - Tiantian Li
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China
| | - Xiangyu Zhong
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China
| | - Hongsheng Lin
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, 510632, China
| | - Yi Zhang
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China.
| | - Wei Xue
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, 510632, China; MOE Key Laboratory of Tumor Molecular Biology, Jinan University, Guangzhou, 510632, China.
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6
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Jayswal VK, Ritcey AM, Morin JF. Synthesis of fluorescent carbon nanoparticles by dispersion polymerization of acetylene. NANOSCALE ADVANCES 2023; 5:337-343. [PMID: 36756256 PMCID: PMC9846478 DOI: 10.1039/d2na00619g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/17/2022] [Indexed: 06/18/2023]
Abstract
Carbon nanoparticles (CNPs) are of interest due to their distinct optoelectronic properties for a diverse range of applications and their functions and properties can be changed by varying their shape, size and dimensionality. The current synthetic methods reported often result in uncontrolled shape, size and polydispersity. In this work, we focus on developing a low-temperature synthetic method for preparing fluorescent carbon nanoparticles and modulation of properties. Our method, based on the dispersion Glaser-Hay polymerization of acetylene followed by decomposition into a carbonaceous material, yields CNPs with sizes varying from 30 nm to 60 nm. The change in reaction parameters influences the shape and size of CNPs, yielding spherical CNPs. The residual alkynes were exploited further for post-functionalization/graphitization by UV irradiation to yield multifunctional CNPs, which were fluorescent in the blue region. The CNPs were characterized with microscopy and spectroscopy techniques after synthesis and after UV-irradiation to study the morphological, chemical, physical and optical properties. This allowed us to understand the influence of parameter variation on the properties and to attempt to establish the structure-property relationship.
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Affiliation(s)
- Vijay Kumar Jayswal
- Département de Chimie et Centre de Recherche des Matériaux Avancés (CERMA), Université Laval 1045, de la Médecine Québec Quebec G1V 0A6 Canada
| | - Anna M Ritcey
- Département de Chimie et Centre de Recherche des Matériaux Avancés (CERMA), Université Laval 1045, de la Médecine Québec Quebec G1V 0A6 Canada
| | - Jean-François Morin
- Département de Chimie et Centre de Recherche des Matériaux Avancés (CERMA), Université Laval 1045, de la Médecine Québec Quebec G1V 0A6 Canada
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7
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Wang X, Sun L, Wang M, Maestri G, Malacria M, Liu X, Wang Y, Wu L. C‐I Selective Sonogashira and Heck Coupling Reactions Catalyzed by Aromatic Triangular Tri‐palladium. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaoshuang Wang
- Liaocheng University department of chemistry and chemical engineering CHINA
| | - Lei Sun
- Liaocheng University department of chemistry and chemical engineering CHINA
| | - Miaomiao Wang
- Liaocheng University department of chemistry and chemical engineering CHINA
| | - Giovanni Maestri
- University of Parma: Universita degli Studi di Parma deparment of chemistry, life sciences and environmental sustainability ITALY
| | - Max Malacria
- CNRS: Centre National de la Recherche Scientifique ICSN FRANCE
| | - Xiang Liu
- China Three Gorges University college of materials and chemical engineering CHINA
| | - Yanlan Wang
- Liaocheng University Department of chemistry and chemical engineering 1,Hunan Road, Liaocheng City, Shandong Province, China 252059 Liaocheng CHINA
| | - Lingang Wu
- Liaocheng University department of chemistry and chemical engineering CHINA
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8
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Jansen F, Schuster PA, Lamla M, Trautwein C, Kuehne AJC. Biodegradable Polyimidazole Particles as Contrast Agents Produced by Direct Arylation Polymerization. Biomacromolecules 2021; 22:5065-5073. [PMID: 34734711 DOI: 10.1021/acs.biomac.1c01044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conjugated polymer particles provide an important platform for the development of theranostic nanoagents. However, the number of biocompatible and foremost biodegradable π-conjugated polymers is limited. Imidazole is a π-conjugated motif that is abundant in biological systems. Oxidative degradation of imidazole is present in nature via enzymatic or free radical processes. In this work, we introduce polymer particles consisting purely of polyimidazole. We employ direct arylation polymerization and adapt it to a dispersion polymerization protocol to yield uniform and narrowly dispersed nanoparticles. We employ this mechanism to produce linear and cross-linked polymer particles to tune the optical properties from fluorescent to photoacoustically active. We show that the particles can be degraded by H2O2 as well as by reactive oxygen species produced by cells and we detect the degradation products. Altogether, our results suggest that polyimidazole particles represent ideal candidates for theranostic applications.
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Affiliation(s)
- Felicitas Jansen
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.,DWI─Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Philipp A Schuster
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Markus Lamla
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Christian Trautwein
- Department of Internal Medicine III, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany
| | - Alexander J C Kuehne
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.,DWI─Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52076 Aachen, Germany
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9
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Moratille Y, Arshad M, Cohen C, Maali A, Lemaire E, Sintes-Zydowicz N, Drockenmuller E. Cross-linked polymer microparticles with tunable surface properties by the combination of suspension free radical copolymerization and Click chemistry. J Colloid Interface Sci 2021; 607:1687-1698. [PMID: 34598028 DOI: 10.1016/j.jcis.2021.09.012] [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: 05/21/2021] [Revised: 08/13/2021] [Accepted: 09/02/2021] [Indexed: 11/24/2022]
Abstract
We propose a general, versatile and broad in scope two-steps approach for the elaboration of cross-linked polymer microparticles (µPs) with tunable functionalities and surface properties. Surface-functionalized cross-linked polymer µPs with diameter in the 80 μm range are prepared by the combination of: 1) suspension free radical copolymerization of styrene, propargyl methacrylate and 1,6-hexanediol dimethacrylate, 2) subsequent covalent tethering of a variety of azide-functionalized moieties (i.e. rhodamine B fluorescent dye or poly(ethylene glycol) (PEG) brush precursor) by copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) and, 3) optional N-alkylation of the 1,2,3-triazole groups followed by anion exchange reaction to afford covalently-tethered 1,2,3-triazolium ionic liquids with iodide or cresol red counter-anions. The resulting µPs are characterized by laser diffraction, differential scanning calorimetry, as well as by optical, confocal fluorescence, scanning electron and atomic force microscopies. Finally, the rheological properties of concentrated suspensions (volume fractions of 0.40 and 0.44) of the different synthesized µPs dispersed in a 1:1 (vol/vol) mixture of polyalkylene glycol and water are studied. The modification of µPs surface properties contributes not only to change the stability of the suspensions against flocculation, but also to significantly modify their rheological behavior at high shear stresses. This represents a clear experimental evidence of the importance of non-hydrodynamic contact forces in the rheology of non-Brownian suspensions (NBSs).
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Affiliation(s)
- Yoanh Moratille
- Univ Lyon, Université Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, Lyon F-69003, France
| | - Muhammad Arshad
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, Talence F-33405, France
| | - Celine Cohen
- Université Côte d'Azur, CNRS, InPhyNi-UMR 7010, Nice Cedex 2 06108, France
| | | | - Elisabeth Lemaire
- Université Côte d'Azur, CNRS, InPhyNi-UMR 7010, Nice Cedex 2 06108, France
| | - Nathalie Sintes-Zydowicz
- Univ Lyon, Université Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, Lyon F-69003, France.
| | - Eric Drockenmuller
- Univ Lyon, Université Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, Lyon F-69003, France.
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10
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Haehnle B, Schuster PA, Chen L, Kuehne AJC. All-Conjugated Polymer Core-Shell and Core-Shell-Shell Particles with Tunable Emission Profiles and White Light Emission. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101411. [PMID: 34018682 DOI: 10.1002/smll.202101411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Future applications of conjugated polymer particles (CPP) in medicine, organic photonics, and optoelectronics greatly depend on high performance and precisely adjustable optical properties of the particles. To meet these criteria, current particle systems often combine conjugated polymers with inorganic particles in core-shell geometries, extending the possible optical characteristics of CPP. However, current conjugated polymer particles are restricted to a single polymer phase composed of a distinct polymer or a polymer blend. Here, a synthetic toolbox is presented that enables the synthesis of monodisperse core-shell and core-shell-shell particles, which consist entirely of conjugated polymers but of different types in the core and the shells. Seeded and fed-batch dispersion polymerizations based on Suzuki-Miyaura-type cross-coupling are investigated. The different approaches allow accurate control over the created interface between the conjugated polymer phases and thus also over the energy transfer phenomena between them. This approach opens up completely new synthetic freedom for fine tuning of the optical properties of CPP, enabling, for example, the synthesis of individual white light-emitting particles.
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Affiliation(s)
- Bastian Haehnle
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Philipp A Schuster
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Lisa Chen
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
| | - Alexander J C Kuehne
- Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm, 89081, Germany
- DWI - Leibniz-Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany
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11
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Martin J, Desfoux A, Martinez J, Amblard M, Mehdi A, Vezenkov L, Subra G. Bottom-up strategies for the synthesis of peptide-based polymers. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Peterson GI, Yang S, Choi TL. Direct formation of nano-objects via in situ self-assembly of conjugated polymers. Polym Chem 2021. [DOI: 10.1039/d0py01389g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The development of the polymer self-assembly method “in situ nanoparticlization of conjugated polymers” is discussed in this Perspective.
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Affiliation(s)
- Gregory I. Peterson
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Sanghee Yang
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Tae-Lim Choi
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
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13
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Fluorescent poly(methacryloxy quinolin) microparticles allowing simultaneous gold detection with additive-free photocatalytic synthesis of raspberry-like gold nanoparticles and gold nanoparticle decorated microparticles. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Kao Y, Chen C, Whang W, Chen Y, Chen K. Poly(vinyl alcohol)‐controlled synthesis of monodispersed crosslinked poly(methyl methacrylate) microparticles with significantly improved mechanical properties. POLYM INT 2019. [DOI: 10.1002/pi.5818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yu‐Chen Kao
- Department of Materials Science and EngineeringNational Chiao Tung University Hsinchu Taiwan, R.O.C
| | - Chun‐Hua Chen
- Department of Materials Science and EngineeringNational Chiao Tung University Hsinchu Taiwan, R.O.C
| | - Wha‐Tzong Whang
- Department of Materials Science and EngineeringNational Chiao Tung University Hsinchu Taiwan, R.O.C
| | - Yi‐Chun Chen
- Department of Material and Chemical Research LaboratoriesIndustrial Technology Research Institute Chutung, Hsinchu Taiwan, R.O.C
| | - Kai‐Chi Chen
- Department of Material and Chemical Research LaboratoriesIndustrial Technology Research Institute Chutung, Hsinchu Taiwan, R.O.C
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15
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Shanks HR, Zhu M, Milani AH, Turton J, Haigh S, Hodson NW, Adlam D, Hoyland J, Freemont T, Saunders BR. Core-shell-shell cytocompatible polymer dot-based particles with near-infrared emission and enhanced dispersion stability. Chem Commun (Camb) 2018; 54:9364-9367. [PMID: 30079412 DOI: 10.1039/c8cc04310h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer dots (PDs) are promising fluorescent probes for biomaterials applications. Here, novel cytocompatible composite PD particles have been synthesised with a core-shell-shell morphology. The particles show near-infrared emission, improved fluorescent brightness and enhanced colloidal stability compared to pure PDs. The particles also show non-radiative resonance energy transfer (NRET) with a model dye.
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Affiliation(s)
- Hannah R Shanks
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
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16
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Efficient synthesis of cRGD functionalized polymers as building blocks of targeted drug delivery systems. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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17
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Ciftci S, Jansen F, Chimisso V, Kler J, Rahimi K, Kuehne AJC. Horner–Wadsworth–Emmons dispersion polymerization for the production of monodisperse conjugated polymer particles under ambient conditions. Polym Chem 2018. [DOI: 10.1039/c8py00277k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Here we present the first metal-free dispersion polymerization yielding highly monodisperse conjugated polymer particles.
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Affiliation(s)
- Sibel Ciftci
- DWI – Leibniz Institut für Interaktive Materialien e.V
- 52076 Aachen
- Germany
| | - Felicitas Jansen
- DWI – Leibniz Institut für Interaktive Materialien e.V
- 52076 Aachen
- Germany
| | - Vittoria Chimisso
- DWI – Leibniz Institut für Interaktive Materialien e.V
- 52076 Aachen
- Germany
| | - Joe Kler
- DWI – Leibniz Institut für Interaktive Materialien e.V
- 52076 Aachen
- Germany
| | - Khosrow Rahimi
- DWI – Leibniz Institut für Interaktive Materialien e.V
- 52076 Aachen
- Germany
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18
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Bio-degradable highly fluorescent conjugated polymer nanoparticles for bio-medical imaging applications. Nat Commun 2017; 8:470. [PMID: 28883395 PMCID: PMC5589938 DOI: 10.1038/s41467-017-00545-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/05/2017] [Indexed: 11/25/2022] Open
Abstract
Conjugated polymer nanoparticles exhibit strong fluorescence and have been applied for biological fluorescence imaging in cell culture and in small animals. However, conjugated polymer particles are hydrophobic and often chemically inert materials with diameters ranging from below 50 nm to several microns. As such, conjugated polymer nanoparticles cannot be excreted through the renal system. This drawback has prevented their application for clinical bio-medical imaging. Here, we present fully conjugated polymer nanoparticles based on imidazole units. These nanoparticles can be bio-degraded by activated macrophages. Reactive oxygen species induce scission of the conjugated polymer backbone at the imidazole unit, leading to complete decomposition of the particles into soluble low molecular weight fragments. Furthermore, the nanoparticles can be surface functionalized for directed targeting. The approach opens a wide range of opportunities for conjugated polymer particles in the fields of medical imaging, drug-delivery, and theranostics. Conjugated polymer nanoparticles have been applied for biological fluorescence imaging in cell culture and in small animals, but cannot readily be excreted through the renal system. Here the authors show fully conjugated polymer nanoparticles based on imidazole units that can be bio-degraded by activated macrophages.
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19
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Raposo Moreira Dias A, Pina A, Dal Corso A, Arosio D, Belvisi L, Pignataro L, Caruso M, Gennari C. Multivalency Increases the Binding Strength of RGD Peptidomimetic-Paclitaxel Conjugates to Integrin α V β 3. Chemistry 2017; 23:14410-14415. [PMID: 28816404 PMCID: PMC5656903 DOI: 10.1002/chem.201703093] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Indexed: 11/29/2022]
Abstract
This work reports the synthesis of three multimeric RGD peptidomimetic‐paclitaxel conjugates featuring a number of αVβ3 integrin ligands ranging from 2 to 4. These constructs were assembled by conjugation of the integrin αVβ3 ligand cyclo[DKP‐RGD]‐CH2NH2 with paclitaxel via a 2′‐carbamate with a self‐immolative spacer, the lysosomally cleavable Val‐Ala dipeptide linker, a multimeric scaffold, a triazole linkage, and finally a PEG spacer. Two monomeric conjugates were also synthesized as reference compounds. Remarkably, the new multimeric conjugates showed a binding affinity for the purified integrin αVβ3 receptor that increased with the number of integrin ligands (reaching a minimum IC50 value of 1.2 nm for the trimeric), thus demonstrating that multivalency is an effective strategy to strengthen the ligand–target interactions.
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Affiliation(s)
- André Raposo Moreira Dias
- Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133, Milan, Italy), Fax: (+39) 02-5031-4072
| | - Arianna Pina
- Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133, Milan, Italy), Fax: (+39) 02-5031-4072
| | - Alberto Dal Corso
- Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133, Milan, Italy), Fax: (+39) 02-5031-4072
| | - Daniela Arosio
- CNR, Istituto di Scienze e Tecnologie Molecolari (ISTM), Via C. Golgi, 19, 20133, Milan, Italy
| | - Laura Belvisi
- Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133, Milan, Italy), Fax: (+39) 02-5031-4072.,CNR, Istituto di Scienze e Tecnologie Molecolari (ISTM), Via C. Golgi, 19, 20133, Milan, Italy
| | - Luca Pignataro
- Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133, Milan, Italy), Fax: (+39) 02-5031-4072
| | - Michele Caruso
- Nerviano Medical Sciences, Viale Pasteur, 10, 20014, Nerviano, Italy
| | - Cesare Gennari
- Università degli Studi di Milano, Dipartimento di Chimica, Via C. Golgi 19, 20133, Milan, Italy), Fax: (+39) 02-5031-4072.,CNR, Istituto di Scienze e Tecnologie Molecolari (ISTM), Via C. Golgi, 19, 20133, Milan, Italy
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20
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Kuehne AJC. Conjugated Polymer Nanoparticles toward In Vivo Theranostics - Focus on Targeting, Imaging, Therapy, and the Importance of Clearance. ACTA ACUST UNITED AC 2017; 1:e1700100. [DOI: 10.1002/adbi.201700100] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 06/28/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Alexander J. C. Kuehne
- DWI - Leibniz Institute for Interactive Materials; RWTH Aachen University; Forckenbeckstraße 50 52076 Aachen Germany
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21
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Picard-Lafond A, Morin JF. Low-Temperature Synthesis of Carbon-Rich Nanoparticles with a Clickable Surface for Functionalization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5385-5392. [PMID: 28494152 DOI: 10.1021/acs.langmuir.7b00135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carbon nanoparticles (CNPs) are promising materials for optoelectronic and biomedical applications thanks to their optical properties, low production cost, and superior biocompatibility compared to traditional semiconductor quantum dots. The countless synthetic methods reported allow a library of diverse CNP structures and optical properties, guiding their subsequent applications. However, the current drawbacks lie mainly within these synthetic processes, as many of them require harsh conditions preventing control over morphology and often generating chemically inert nanoparticles. Thus, more advances on low temperature and controllable synthetic processes are desirable. In this study, we suggest a new strategy to synthesize CNPs with tunable size, while avoiding the use of harsh conditions and allowing easy surface functionalization. The metastable state of polyyne-containing materials appoints them as ideal precursors for low-temperature preparation of carbon-rich structures. Our approach is to synthesize octatetrayne-containing particles prompt to spontaneous reaction, including topochemical polymerization, followed by aromatization, to avoid harsh carbonization steps. For the particle synthesis, the well-known dispersion polymerization process has been adapted for homocoupling of terminal butadiynes, generating the octatetrayne-containing particles. The method was proven reproducible, scalable, and versatile, as the particles' size can be modulated between 50 and 170 nm. Surface functionalization via thiol-yne click chemistry was completed with a pyrene-modified thiol ligand to provide the CNPs with photoactive properties in the visible range. The functionalized particles exhibit fluorescence at 470 nm arising from excimer formation.
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Affiliation(s)
- Audrey Picard-Lafond
- Département de Chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval , 1045 Avenue de la Médecine, Pavillon Alexandre-Vachon, Québec, QC, Canada , G1V 0A6
| | - Jean-François Morin
- Département de Chimie and Centre de Recherche sur les Matériaux Avancés (CERMA), Université Laval , 1045 Avenue de la Médecine, Pavillon Alexandre-Vachon, Québec, QC, Canada , G1V 0A6
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22
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Go D, Jurásková A, Hoffmann A, Kapiti G, Kuehne AJC. Deep-Blue Fluorescent Particles via Microwave Heating of Polyacrylonitrile Dispersions. Macromol Rapid Commun 2017; 38. [PMID: 28169474 DOI: 10.1002/marc.201600775] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Dennis Go
- DWI-Leibniz Institute for Interactive Materials; RWTH Aachen University; Forckenbeckstraße 50 52076 Aachen Germany
| | - Alena Jurásková
- DWI-Leibniz Institute for Interactive Materials; RWTH Aachen University; Forckenbeckstraße 50 52076 Aachen Germany
| | - Andreas Hoffmann
- DWI-Leibniz Institute for Interactive Materials; RWTH Aachen University; Forckenbeckstraße 50 52076 Aachen Germany
| | - Gent Kapiti
- DWI-Leibniz Institute for Interactive Materials; RWTH Aachen University; Forckenbeckstraße 50 52076 Aachen Germany
| | - Alexander J. C. Kuehne
- DWI-Leibniz Institute for Interactive Materials; RWTH Aachen University; Forckenbeckstraße 50 52076 Aachen Germany
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23
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Han H, Teng W, Chen T, Zhao J, Jin Q, Qin Z, Ji J. A cascade enzymatic reaction activatable gemcitabine prodrug with an AIE-based intracellular light-up apoptotic probe for in situ self-therapeutic monitoring. Chem Commun (Camb) 2017; 53:9214-9217. [DOI: 10.1039/c7cc04872f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A cascade enzymatic reaction activatable gemcitabine prodrug was designed as a theranostic platform for in situ self-therapeutic monitoring of pancreatic cancer cells.
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Affiliation(s)
- Haijie Han
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Wenzhuo Teng
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Tingting Chen
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Jue Zhao
- Department of Obstetrics
- Zhejiang Provincial People's Hospital of Hangzhou Medical College
- Hangzhou
- China
| | - Qiao Jin
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Zhihui Qin
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- China
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24
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Picard-Lafond A, Daigle M, Morin JF. Tetraphenylethene–diyne hybrid nanoparticles from Glaser-type dispersion polymerization. RSC Adv 2017. [DOI: 10.1039/c7ra04513a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Organic-based nanoparticles hold great potential for optoelectronics and biomedicine as they may provide optical properties in the visible range and notable advantages over inorganic counterparts.
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Affiliation(s)
- Audrey Picard-Lafond
- Département de Chimie
- Centre de Recherche sur les Matériaux Avancés (CERMA)
- Université Laval
- Québec
- Canada
| | - Maxime Daigle
- Département de Chimie
- Centre de Recherche sur les Matériaux Avancés (CERMA)
- Université Laval
- Québec
- Canada
| | - Jean-François Morin
- Département de Chimie
- Centre de Recherche sur les Matériaux Avancés (CERMA)
- Université Laval
- Québec
- Canada
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25
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Chen T, Yin H, Chen ZQ, Zhang GF, Xie NH, Li C, Gong WL, Tang BZ, Zhu MQ. Monodisperse AIE-Active Conjugated Polymer Nanoparticles via Dispersion Polymerization Using Geminal Cross-Coupling of 1,1-Dibromoolefins. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6547-6552. [PMID: 27555445 DOI: 10.1002/smll.201601410] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/26/2016] [Indexed: 06/06/2023]
Abstract
Monodisperse AIE (aggregation-induced emission)-active conjugated polymer nanoparticles are synthesized by dispersion polymerization using geminal Suzuki cross-coupling of 1,1-dibromoolefins. The size of the nanoparticles can be adjusted by varying the concentration of the initial monomer.
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Affiliation(s)
- Tao Chen
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Hong Yin
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Ze-Qiang Chen
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Guo-Feng Zhang
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Nuo-Hua Xie
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Chong Li
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Wen-Liang Gong
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Ben Zhong Tang
- Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, P. R. China
| | - Ming-Qiang Zhu
- Wuhan National Laboratory for Optoelectronics, College of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
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26
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Houston JE, Kraft M, Mooney I, Terry AE, Scherf U, Evans RC. Charge-Mediated Localization of Conjugated Polythiophenes in Zwitterionic Model Cell Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8141-8153. [PMID: 27434827 DOI: 10.1021/acs.langmuir.6b01828] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The selective engineering of conjugated polyelectrolyte (CPE)-phospholipid interfaces is poised to play a key role in the design of advanced biomedical and biotechnological devices. Herein, we report a strategic study to investigate the relationship between the charge of the CPE side group and their association with zwitterionic phospholipid bilayers. The interaction of dipalmitoylphosphatidylcholine (DPPC) phospholipid vesicles with a series of poly(thiophene)s bearing zwitterionic, cationic, or anionic terminal groups (P3Zwit, P3TMAHT and P3Anionic, respectively) has been probed. Although all CPEs showed an affinity for the zwitterionic vesicles, the calculated partition coefficients determined using photoluminescence spectroscopy suggested preferential incorporation within the lipid bilayer in the order P3Zwit > P3Anionic ≫ P3TMAHT. The polarity probe Prodan was used to further qualify the position of the CPE inside the vesicle bilayers via Förster resonance energy transfer (FRET) studies. The varying proximity of the CPEs to Prodan was reflected in the Stern-Volmer quenching constants and decreased in the order P3Anionic > P3TMAHT ≫ P3Zwit. Dynamic light scattering measurements showed an increase in the hydrodynamic diameter of the DPPC vesicles upon addition of each poly(thiophene), but to the greatest extent for P3Anionic. Small-angle neutron scattering studies also revealed that P3Anionic specifically increased the thickness of the headgroup region of the phospholipid bilayer. Epifluorescence and atomic force microscopy imaging showed that P3TMAHT formed amorphous agglomerates on the vesicle surface, P3Zwit was buried throughout the bilayer, and P3Anionic formed a shell of protruding chains around the surface, which promoted vesicle fusion. The global data indicate three distinctive modes of interaction for the poly(thiophene)s within DPPC vesicles, whereby the nature of the association is ultimately controlled by the pendant charge group on each CPE chain. Our results suggest that charge-mediated self-assembly may provide a simple and effective route to design luminescent CPE probes capable of specific localization within phospholipid membranes.
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Affiliation(s)
- Judith E Houston
- School of Chemistry and CRANN, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
| | - Mario Kraft
- Macromolecular Chemistry Group (Buwmakro) and Institute for Polymer Technology, Bergische Universität Wuppertal , Gauss-Str. 20, D-42119 Wuppertal, Germany
| | - Ian Mooney
- School of Chemistry and CRANN, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
| | - Ann E Terry
- ISIS, STFC, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, U.K
| | - Ullrich Scherf
- Macromolecular Chemistry Group (Buwmakro) and Institute for Polymer Technology, Bergische Universität Wuppertal , Gauss-Str. 20, D-42119 Wuppertal, Germany
| | - Rachel C Evans
- School of Chemistry and CRANN, University of Dublin, Trinity College , College Green, Dublin 2, Ireland
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27
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Ciftci S, Kuehne AJC. Monodisperse Conjugated Polymer Particles via Heck Coupling—A Kinetic Study to Unravel Particle Formation in Step-Growth Dispersion Polymerization. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01932] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Sibel Ciftci
- DWI − Leibniz Institute
for Interactive Materials, RWTH Aachen University, Forckenbeckstrasse 50, 52074 Aachen, NRW, Germany
| | - Alexander J. C. Kuehne
- DWI − Leibniz Institute
for Interactive Materials, RWTH Aachen University, Forckenbeckstrasse 50, 52074 Aachen, NRW, Germany
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