ACS Macro Letters最新文献

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Salt-Screened Transition toward Bulk-Like Water Dynamics near Polymeric Zwitterions 盐筛向聚合物齐聚物附近大块水动力学的转变
IF 5.8
ACS Macro Letters Pub Date : 2024-07-12 DOI: 10.1021/acsmacrolett.4c00347
Shawn D. Mengel, Audra J. DeStefano, Thomas Webber, Anton Semerdjiev, Songi Han, Rachel A. Segalman
{"title":"Salt-Screened Transition toward Bulk-Like Water Dynamics near Polymeric Zwitterions","authors":"Shawn D. Mengel, Audra J. DeStefano, Thomas Webber, Anton Semerdjiev, Songi Han, Rachel A. Segalman","doi":"10.1021/acsmacrolett.4c00347","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00347","url":null,"abstract":"The superior antifouling performance of zwitterionic materials is commonly linked to their hydration structure, in which tight surface binding of water molecules inhibits solute adsorption. However, there is comparatively little direct experimental data on the hydration water structure and dynamics around zwitterionic moieties, including the longer-range behavior of the hydration shell that modulates the approach of solutes to the polymer surface. This work experimentally probes the dynamics of the diffusing hydration water molecules around a series of zwitterion chemistries using Overhauser dynamic nuclear polarization relaxometry. Surprisingly, water dynamics measured within ∼1 nm of the zwitterions were minimally inhibited compared to those near uncharged hydrophilic or cationic side chains. Specific dissolved ions further enhance the water diffusivity near the zwitterions, rendering the hydration shell bulk water-like. These results that the hydration of a zwitterion surface is nearly indistinguishable from bulk water suggest that these surfaces are “invisible” to biological constituents in a manner tunable by the ionic environment and the chemical design of the zwitterionic surface.","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.8,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Norbornene Dicarboximide: A Green Alternative for Thiol-Norbornene Photopolymers. 降冰片烯二甲酰亚胺:硫醇-降冰片烯光聚合物的绿色替代品。
IF 5.1
ACS Macro Letters Pub Date : 2024-07-11 DOI: 10.1021/acsmacrolett.4c00334
Warrick Ma, Nathaniel Wright, Yadong Wang
{"title":"Norbornene Dicarboximide: A Green Alternative for Thiol-Norbornene Photopolymers.","authors":"Warrick Ma, Nathaniel Wright, Yadong Wang","doi":"10.1021/acsmacrolett.4c00334","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00334","url":null,"abstract":"<p><p>Carbic anhydride is an underappreciated starting material for 3D-printable, non-hydrogel photopolymers. Compared with other norbornene precursors, carbic anhydride is cheaper and reactive via aminolysis. As a result, the generalized and efficient functionalization with carbic anhydride can increase the utilization of thiol-norbornene photopolymers. Here, we report carbic anhydride's catalyst-free condensation with two commodity polymers: amine-functionalized polypropylene glycol and polydimethylsiloxane. The reaction completes in 1 h, produces water as the only byproduct, and does not require purification. It is therefore affordable, facile, and green. Mixing the product with thiol cross-linkers and the appropriate photoadditives produces photopolymers that are printable via Digital Light Processing. The photopolymers exhibit tunable tensile properties and a functional surface by varying the polymer backbone and thiol stoichiometry. Moreover, the photopolymers are 3D-printed into true-to-scale human aorta models and porous scaffolds with high resolution. The simple yet versatile platform will benefit additive manufacturing of soft materials and beyond.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanism of Interconnected Pore Formation in High Internal Phase Emulsion-Templated Polymer. 高内相乳液模板聚合物中相互连接的孔隙形成机理。
IF 5.1
ACS Macro Letters Pub Date : 2024-07-11 DOI: 10.1021/acsmacrolett.4c00207
Shengmiao Zhang, Mingjun Chen, Yijing You, Yiling Wang, Yun Zhu
{"title":"Mechanism of Interconnected Pore Formation in High Internal Phase Emulsion-Templated Polymer.","authors":"Shengmiao Zhang, Mingjun Chen, Yijing You, Yiling Wang, Yun Zhu","doi":"10.1021/acsmacrolett.4c00207","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00207","url":null,"abstract":"<p><p>High internal phase emulsion-templated polymer, named polyHIPE, has received widespread attention due to its great potential applications in many fields, such as separation, adsorption, heterogeneous catalysis, and sound absorption. The broad applicability is largely dependent on its adjustable opening structure. However, the question of why polyHIPE has an interconnected pore network structure is still to be discussed. Herein, different types (w/o, o/w, and o/o) of HIPEs are prepared and subsequently detected with laser scanning confocal microscopy (LSCM), and the polyHIPEs obtained by curing the HIPEs are characterized by SEM. The observations suggest that the interconnected pore formation is primarily due to the presence of the surfactant-rich phase in the film between the neighboring droplets in HIPE. The interconnected pores are generated by removal of the surfactant-rich domains in the postcuring procedure, and their sizes would be enlarged if the solubility of the surfactant in the continuous phase decreases in the curing stage.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic Ion Gels from the Complex Coacervation of Oppositely Charged Poly(ionic liquid)s. 带相反电荷的聚(离子液体)的复合凝聚产生的动态离子凝胶。
IF 5.1
ACS Macro Letters Pub Date : 2024-07-11 DOI: 10.1021/acsmacrolett.4c00253
Malak Alaa Eddine, Daniil R Nosov, Luiz Fernando Lepre, Anatoli Serghei, Daniel F Schmidt, Damien Montarnal, Alexander S Shaplov, Eric Drockenmuller
{"title":"Dynamic Ion Gels from the Complex Coacervation of Oppositely Charged Poly(ionic liquid)s.","authors":"Malak Alaa Eddine, Daniil R Nosov, Luiz Fernando Lepre, Anatoli Serghei, Daniel F Schmidt, Damien Montarnal, Alexander S Shaplov, Eric Drockenmuller","doi":"10.1021/acsmacrolett.4c00253","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00253","url":null,"abstract":"<p><p>A cationic poly(ionic liquid) (PIL) with pendent butyl imidazolium cations and free bis(trifluoromethylsulfonyl)imide (TFSI) anions and an anionic PIL with pendent TFSI anions and free 1-butyl-3-methylimidazolium cations are synthesized by postpolymerization chemical modification and reversible addition-fragmentation chain-transfer radical copolymerization, respectively. Upon mixing solutions of these two PILs in acetone with stoichiometric amounts of ion pairs, ionic exchanges induce coacervation and, after solvent evaporation, lead to the formation of a dynamic ion gel (DIG) and the concomitant release of free [1-methyl-3-butyl imidazolium]TFSI ionic liquid (IL). A comparison of thermal (<i>T</i><sub>g</sub>), ion conducting (σ<sub>DC</sub>), and viscoelastic (elastic moduli (<i>G</i>')) properties for DIGs and their parent polyelectrolytes, as well as extracted and IL-doped DIGs, demonstrates the formation of ionic cross-links and the ability to easily produce polymer electrolytes with enhanced ionic conductivity (σ<sub>DC</sub> up to 4.5 × 10<sup>-5</sup> S cm<sup>-1</sup> at 30 °C) and higher elastic moduli (<i>G</i>' up to 4 kPa at 25 °C and 1 rad s<sup>-1</sup>), making them highly desirable in many electrochemical applications, including supercapacitors, soft robotics, electrochromic devices, sensors, and solar cells.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantifying and Modeling the Crystallinity of Polymers Confined in Nanopores. 纳米孔中封闭聚合物结晶度的量化与建模。
IF 5.1
ACS Macro Letters Pub Date : 2024-07-11 DOI: 10.1021/acsmacrolett.4c00287
Ming Wang, Chun Li, Simone Napolitano, Dujin Wang, Guoming Liu
{"title":"Quantifying and Modeling the Crystallinity of Polymers Confined in Nanopores.","authors":"Ming Wang, Chun Li, Simone Napolitano, Dujin Wang, Guoming Liu","doi":"10.1021/acsmacrolett.4c00287","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00287","url":null,"abstract":"<p><p>We propose a methodology to characterize the crystalline content of interfacial polymer layers in systems confined at the nanoscale level in a 2D geometry. Based on the crystallinity data of a set of polymers, we introduce a simple model to describe the gradient in crystallinity introduced by confining polymer chains in nanopores. Our model underscores the pivotal role that interfaces play in crystallization and unequivocally contradicts the existence of interfacial \"dead\" layers where crystallization cannot take place. Further, we verified that the organization of crystals near the pore walls resembles the macromolecular architecture of adsorbed layers, hinting at a strong interplay between crystallization and adsorption.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic Implications of Noncovalent Interactions in Amphiphilic Single-Chain Polymer Nanoparticles. 两性单链聚合物纳米粒子中的非共价相互作用的动态影响
IF 5.1
ACS Macro Letters Pub Date : 2024-07-03 DOI: 10.1021/acsmacrolett.4c00269
Peter A Dykeman-Bermingham, Laura R Stingaciu, Changwoo Do, Abigail S Knight
{"title":"Dynamic Implications of Noncovalent Interactions in Amphiphilic Single-Chain Polymer Nanoparticles.","authors":"Peter A Dykeman-Bermingham, Laura R Stingaciu, Changwoo Do, Abigail S Knight","doi":"10.1021/acsmacrolett.4c00269","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00269","url":null,"abstract":"<p><p>Single-chain polymer nanoparticles (SCNPs) combine the chemical diversity of synthetic polymers with the intricate structure of biopolymers, generating versatile biomimetic materials. The mobility of polymer chain segments at length scales similar to secondary structural elements in proteins is critical to SCNP structure and thus function. However, the influence of noncovalent interactions used to form SCNPs (e.g., hydrogen-bonding and biomimetic secondary-like structure) on these conformational dynamics is challenging to quantitatively assess. To isolate the effects of noncovalent interactions on SCNP structure and conformational dynamics, we synthesized a series of amphiphilic copolymers containing dimethylacrylamide and monomers capable of forming these different interactions: (1) di(phenylalanine) acrylamide that forms intramolecular β-sheet-like cross-links, (2) phenylalanine acrylamide that forms hydrogen-bonds but lacks a defined local structure, and (3) benzyl acrylamide that has the lowest propensity for hydrogen-bonding. Each SCNP formed folded structures comparable to those of intrinsically disordered proteins, as observed by size exclusion chromatography and small angle neutron scattering. The dynamics of these polymers, as characterized by a combination of dynamic light scattering and neutron spin echo spectroscopy, was well described using the Zimm with internal friction (ZIF) model, highlighting the role of each noncovalent interaction to additively restrict the internal relaxations of SCNPs. These results demonstrate the utility of local scale interactions to control SCNP polymer dynamics, guiding the design of functional biomimetic materials with refined binding sites and tunable kinetics.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Entanglement Kinetics in Polymer Melts Are Chemically Specific. 聚合物熔体中的纠缠动力学具有化学特异性
IF 5.1
ACS Macro Letters Pub Date : 2024-07-03 DOI: 10.1021/acsmacrolett.4c00092
Benjamin E Dolata, Marco A Galvani Cunha, Thomas O'Connor, Austin Hopkins, Peter D Olmsted
{"title":"Entanglement Kinetics in Polymer Melts Are Chemically Specific.","authors":"Benjamin E Dolata, Marco A Galvani Cunha, Thomas O'Connor, Austin Hopkins, Peter D Olmsted","doi":"10.1021/acsmacrolett.4c00092","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00092","url":null,"abstract":"<p><p>We investigate the universality of entanglement kinetics in polymer melts. We compare predictions of a recently developed constitutive equation for disentanglement to molecular dynamics simulations of both united-atom polyethylene and Kremer-Grest models for polymers in shear and extensional flow. We confirm that entanglements recover on the retraction time scale, rather than the reptation time scale. We find that the convective constraint release parameter β is independent of molecular weight, but that it increases with the ratio of Kuhn length <i>b</i><sub><i>K</i></sub> to packing length <i>p</i> as β ∼ (<i>b</i><sub><i>K</i></sub>/<i>p</i>)<sup>α</sup>, with an exponent α = 1.9, which may suggest that disentanglement rate correlates with an increase in the tube diameter. These results may help shed light on which polymers are more likely to undergo shear banding.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141496297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stably Grafting Polymer Brushes on Both Active and Inert Surfaces Using Tadpole-Like Single-Chain Particles with an Interactive "Head". 利用带有交互式 "头部 "的蝌蚪状单链粒子在活性和惰性表面上稳定接枝聚合物刷。
IF 5.1
ACS Macro Letters Pub Date : 2024-07-02 DOI: 10.1021/acsmacrolett.4c00341
Xiaoya Zhao, Dahua Li, Jie Zhu, Yanbin Fan, Jiayin Xu, Xiayun Huang, Zhihong Nie, Daoyong Chen
{"title":"Stably Grafting Polymer Brushes on Both Active and Inert Surfaces Using Tadpole-Like Single-Chain Particles with an Interactive \"Head\".","authors":"Xiaoya Zhao, Dahua Li, Jie Zhu, Yanbin Fan, Jiayin Xu, Xiayun Huang, Zhihong Nie, Daoyong Chen","doi":"10.1021/acsmacrolett.4c00341","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00341","url":null,"abstract":"<p><p>We report a \"grafting to\" method for stably grafting high-molecular-weight polymer brushes on both active and inert surfaces using tadpole-like single-chain particles (TSCPs) with an interactive \"head\" as grafting units. The TSCPs can be efficiently synthesized through intrachain cross-linking one block of a diblock copolymer; the \"head\" is the intrachain cross-linked single-chain particle, and the \"tail\" is a linear polymer chain that has a contour length up to micrometers. When grafted to a surface, the \"head\", integrating numerous interacting groups, can synergize multiple weak interactions with the surface, thereby enabling stable grafting of the \"tail\" on both active and traditionally challenging inert surfaces. Because the structural parameters and composition of the \"heads\" and \"tails\" can be separately adjusted over a wide range, the interactivity of the \"heads\" with the surface and properties of the brushes can be controlled orthogonally, accomplishing surface brushes that cannot be achieved by existing methods.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141489896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Glycopolymer with Sulfated Fucose and 6'-Sialyllactose as a Dual-Targeted Inhibitor on Resistant Influenza A Virus Strains. 含硫酸化岩藻糖和 6'-Sialyllactose 的聚糖作为抗性甲型流感病毒株的双靶向抑制剂。
IF 5.1
ACS Macro Letters Pub Date : 2024-07-01 DOI: 10.1021/acsmacrolett.4c00221
Ping Zhang, Chenning Li, Xiaoyao Ma, Jinfeng Ye, Depeng Wang, Hongzhi Cao, Guangli Yu, Wei Wang, Xun Lv, Chao Cai
{"title":"Glycopolymer with Sulfated Fucose and 6'-Sialyllactose as a Dual-Targeted Inhibitor on Resistant Influenza A Virus Strains.","authors":"Ping Zhang, Chenning Li, Xiaoyao Ma, Jinfeng Ye, Depeng Wang, Hongzhi Cao, Guangli Yu, Wei Wang, Xun Lv, Chao Cai","doi":"10.1021/acsmacrolett.4c00221","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00221","url":null,"abstract":"<p><p>The frequent mutations of influenza A virus (IAV) have led to an urgent need for the development of innovative antiviral drugs. Glycopolymers offer significant advantages in biomedical applications owing to their biocompatibility and structural diversity. However, the primary challenge lies in the design and synthesis of well-defined glycopolymers to precisely control their biological functionalities. In this study, functional glycopolymers with sulfated fucose and 6'-sialyllactose were successfully synthesized through ring-opening metathesis polymerization and a postmodification strategy. The optimized heteropolymer exhibited simultaneous targeting of hemagglutinin and neuraminidase on the surface of IAV, as evidenced by MU-NANA assay and hemagglutination inhibition data. Antiviral experiments demonstrated that the glycopolymer displayed broad and efficient inhibitory activity against wild-type and mutant strains of H1N1 and H3N2 subtypes <i>in vitro</i>, thereby establishing its potential as a dual-targeted inhibitor for combating IAV resistance.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141464298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Visible Light [2 + 2] Cycloadditions of Thermoresponsive Dendronized Styryltriazines To Exhibit Tunable Microconfinement. 热致性树枝化苯乙烯三嗪的可见光 [2 + 2] 环加成反应,展现可调微共济。
IF 5.1
ACS Macro Letters Pub Date : 2024-06-27 DOI: 10.1021/acsmacrolett.4c00259
Sijie Zhou, Mengjie Zhang, Yue Yuan, Liangxuan Ren, Yuqiang Chen, Wen Li, Afang Zhang, Jiatao Yan
{"title":"Visible Light [2 + 2] Cycloadditions of Thermoresponsive Dendronized Styryltriazines To Exhibit Tunable Microconfinement.","authors":"Sijie Zhou, Mengjie Zhang, Yue Yuan, Liangxuan Ren, Yuqiang Chen, Wen Li, Afang Zhang, Jiatao Yan","doi":"10.1021/acsmacrolett.4c00259","DOIUrl":"https://doi.org/10.1021/acsmacrolett.4c00259","url":null,"abstract":"<p><p>Visible light-triggered photochemical reactions in aqueous media are highly valuable to tailor molecular structures and properties in an ecofriendly manner. Here we report visible light-induced catalyst-free [2 + 2] cycloadditions of thermoresponsive dendronized styryltriazines, which show tunable microconfinement to guest dyes in aqueous media. These dendronized styryltriazines are constituted of conjugated mono- or tristyryltriazines, which carry hydrophilic dendritic oligoethylene glycol (OEG) pendants. They underwent efficient [2 + 2] cycloadditions to form dendronized cyclobutane dimers or oligomers in water through irradiation with visible light of 400 nm, and their cycloaddition behavior was dominated by dendritic architectures and solvent conditions. Dendronization with dendritic OEGs also afforded them characteristic thermoresponsive properties with tunable phase transition temperatures in the range 36-65 °C, which can be further modulated through photocycloaddition of styryltriazine chromophores. Importantly, dendronized styryltriazines can form tunable microenvironments in aqueous media, which encapsulate hydrophobic solvatochromic Nile red to exhibit variable photophysical properties. The encapsulated guest dye can be simultaneously released through noninvasive visible light-induced [2 + 2] cycloaddition reactions.</p>","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141453614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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