Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface

Zhu, Lin; Chen, Fang; Ma, Xiaoyan; Qiang, Xiu; Li, Chi Kong; Chen, Dong; Zang, Duyang

doi:10.1155/2018/3787843

Cited by 5 publications

(3 citation statements)

References 54 publications

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“…As an effective method in creating three-dimensional nanostructures by assembling a two-dimensional molecular layer at the air–water interface, the Langmuir–Blodgett (LB) technique is considered to be the most widely utilized one [ 133 , 134 ]. In the past few years, POSS-based materials have been recognized as promising materials forming stable Langmuir films [ 135 , 136 , 137 , 138 ]. For example, Ishizaki and coworkers prepared a porous SiO 2 nanofilm by using hybrid block copolymers consisting of N-dodecyl acrylamide (DDA) and silsesquioxane (SQ) comonomers (p(DDA/SQ26)- b -pDDA) ( Figure 17 ) [ 77 ].…”

Section: Applicationsmentioning

confidence: 99%

Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers

et al. 2018

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Understanding the mechanism of molecular self-assembly to form well-organized nanostructures is essential in the field of supramolecular chemistry. Particularly, amphiphilic copolymers incorporated with polyhedral oligomeric silsesquioxanes (POSSs) have been one of the most promising materials in material science, engineering, and biomedical fields. In this review, new ideas and research works which have been carried out over the last several years in this relatively new area with a main focus on their mechanism in self-assembly and applications are discussed. In addition, insights into the unique role of POSSs in synthesis, microphase separation, and confined size were encompassed. Finally, perspectives and challenges related to the further advancement of POSS-based amphiphilics are discussed, followed by the proposed design considerations to address the challenges that we may face in the future.

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Section: Applicationsmentioning

confidence: 99%

Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers

et al. 2018

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“…In the past decade, giant amphiphilic molecules have attracted increasing attention. , Giant amphiphilic molecules can self-assemble into nanovesicles, micelles, nanofilaments, and different microphase structures which endow them with promising potential applications in drug delivery and nanotechnology. − In particular, polyhedral oligomeric silsesquioxane (POSS) nanoparticles are frequently used to prepare giant amphiphilic molecules due to their rigid three-dimensional configuration and precise chemical structure. − The POSS nanoparticle with a precise size has no chain entanglement, which allows the giant molecules to show faster assembly kinetics and relaxation behavior than traditional polymers. − Driven by the advances in chemical synthesis tools, giant molecules with entirely rigid nanoparticles and precisely defined sequence have been obtained. − These giant molecules exhibit many interesting assembly behaviors and structures in bulk and solution states. − Despite this progress, the assembly behavior of giant amphiphilic molecules in two-dimensional space is still not well understood.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Behaviors of Giant Amphiphilic Molecules Composed of Hydrophobic Isobutyl POSS and Hydrophilic POSS Bearing Carboxylic Acid Groups at the Air–Water Interface

Wang,

Xu,

Feng

et al. 2023

Langmuir

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The behavior of giant amphiphilic molecules at the air− water interface has become a subject of concern to researchers. Small changes in the molecular structure can cause obvious differences in the molecular arrangement and interfacial properties of the monolayer. In this study, we have systematically investigated the interfacial behaviors of the giant amphiphilic molecules with different number of hydrophobic BPOSS blocks and one hydrophilic ACPOSS block ((BPOSS) n -ACPOSS (n = 1−5)) at the air−water interface by the surface pressure−area (π−A) isotherm, Brewster angle microscopy (BAM), compression modulus measurement, and hysteresis measurement. We found that both the number of BPOSS blocks and the compression rate can significantly influence the interfacial behaviors of giant molecules. The π−A isotherms of giant molecules (BPOSS) n -ACPOSS (n = 2−5) exhibit a "cusp" phenomenon which can be attributed to the transition from monolayer to multilayer. However, the cusp is dramatically different from the "collapse" of the monolayer studied in other molecular systems, which is highly dependent on the compression rate of the monolayer. In addition, the compression modulus and hysteresis measurements reveal that the number of BPOSS blocks of (BPOSS) n -ACPOSS plays an important role in the static elasticity, stability, and reversibility of the Langmuir films.

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“…In addition, the air/water interface can provide a good environment for many molecules/building blocks to construct supramolecular assemblies in a controlled manner [19][20][21][22]. To date, Langmuir and Langmuir-Blodgett (LB) techniques are considered well-known methods to fabricate organized ultrathin films at the air/water interface [23][24][25][26][27][28][29][30][31][32]. Moreover, in comparison to other self-assembly techniques [33,34], special two-dimensional (2D) and three-dimensional (3D) nanostructures can also be fabricated by the LB technique [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Self-Assembled Composite Langmuir Films via Fluorine-Containing Bola-Type Derivative with Metal Ions

Sun

Zhao

et al. 2018

Coatings

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The design and preparation of functional bolaamphiphile-based composite films are of key importance for application in a wide variety of fields. This study demonstrates a new approach to constructing composite films by the Langmuir-Blodgett (LB) method using a fluorine-containing bola-type diacid derivative with different metal ions. The bola-type molecule we used could be spread on water surfaces and metal ion subphases to fabricate various nanostructured ultrathin films. The obtained data demonstrated that the employed metal ions, including Ag(I), Cu(II), and Eu(III) ions in subphase solutions, can regulate the organized molecular stacking and form interfacial nanostructures deposited in LB films. It was found that the interfacial coordinating interactions can easily occur between carboxyl groups in a molecular skeleton with metal ions in the formed composite films. The formation of composite films was confirmed by changes in the surface pressure-area isotherms, morphologies, and spectra of the transferred LB films. While various research works have achieved the regulation of functions and nanostructures of sophisticated bola-type compounds, we here demonstrate a simple routine to modulate the nanostructures and organized packing of bola-type compounds composite films by changing the metal ions in subphase solutions.

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Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface

Cited by 5 publications

References 54 publications

Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers

Self-Assembly and Applications of Amphiphilic Hybrid POSS Copolymers

Interfacial Behaviors of Giant Amphiphilic Molecules Composed of Hydrophobic Isobutyl POSS and Hydrophilic POSS Bearing Carboxylic Acid Groups at the Air–Water Interface

Self-Assembled Composite Langmuir Films via Fluorine-Containing Bola-Type Derivative with Metal Ions

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