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You searched for: Subject term benzaldehyde Remove constraint Subject term: benzaldehyde Subject term composite polymers Remove constraint Subject term: composite polymers
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1. Preparation of ordered large pore SBA-15 silica functionalized with aminopropyl groups through one-pot synthesis

Author:
Xueguang Wang; Kyle S. K. Lin; Jerry C. C. Chan; Soofin Cheng
Source:
Chemical communications 2004 v. no.23 pp. 2762-2763
ISSN:
1364-548X
Subject:
benzaldehyde; catalytic activity; composite polymers; condensation reactions; flavanones; moieties; silica; synthesis
Abstract:
... Highly ordered large pore SBA-15 silica functionalized with up to 16% aminopropyl groups, which gave high catalytic activity and selectivity toward flavanone synthesis through aldol condensation and subsequent intramolecular Michael addition of benzaldehyde and 2′-hydroxyacetophenone, was synthesized for the first time via co-condensation of tetraethylorthosilicate (TEOS) and 3-aminopropyltriethox ...
DOI:
10.1039/b408022j

2. Renewable resource‐based poly (m‐phenylenevinylene)s and their statistical copolymers: Synthesis, characterization, and probing of molecular aggregation and Forster energy transfer processes

Author:
Anish Cyriac; S. R. Amrutha; M. Jayakannan
Source:
Journal of polymer science 2008 v.46 no.10 pp. 3241-3256
ISSN:
0887-624X
Subject:
benzaldehyde; chemistry; composite polymers; emissions factor; energy transfer; photoluminescence; renewable resources
Abstract:
... We report a novel poly (m‐phenylenevinylene)s and their copolymers based on renewable resource starting material 3‐pentadecylphenol to trace the Forster energy transfer process and molecular aggregation in the π‐conjugated polymers. The new bisylide monomer was polymerized with bisaldehyde (or benzaldehyde) under Wittig‐Horner reaction conditions to prepare poly [(4‐methoxy‐6‐pentadecyl‐1, 3‐pheny ...
DOI:
10.1002/pola.22663

3. Controlled cationic copolymerization of benzaldehyde with isobutyl vinyl ether using base‐assisting system

Author:
Yasushi Ishido; Ryosuke Aburaki; Shokyoku Kanaoka; Sadahito Aoshima
Source:
Journal of polymer science 2010 v.48 no.8 pp. 1838-1843
ISSN:
0887-624X
Subject:
benzaldehyde; composite polymers; copolymerization; ingredients; toluene
Abstract:
... Well‐controlled cationic copolymerization of benzaldehyde with IBVE was achieved using ethanesulfonic acid as an initiator in conjunction with GaCl₃ in the presence of an added base. Copolymerization proceeded smoothly in toluene at −78 °C, yielding copolymers with very low polydispersity (Mw/Mₙ ∼ 1.1). Reactive conditions are critical for successful copolymerization: Every single parameter and in ...
DOI:
10.1002/pola.23945

4. Functional Phthalaldehyde Polymers by Copolymerization with Substituted Benzaldehydes

Author:
Kaitz Joshua A.; Moore Jeffrey S.
Source:
Macromolecules 2013 v.46 no.3 pp. 608-612
ISSN:
1520-5835
Subject:
benzaldehyde; composite polymers; copolymerization; crosslinking; depolymerization; electronics
Abstract:
... End-capped poly(phthalaldehyde) [PPA] is a well-studied metastable polymer that has attracted interest due to its ease of synthesis and rapid depolymerization. PPA is limited, however, in the type of macromolecular architectures accessible, as functionalizable phthalaldehyde derivatives are not commercially available and their synthesis is cumbersome. To this end, a general route to phthalaldehyde ...
DOI:
10.1021/ma302575s

5. Photo-Triggered Release of Caged Camptothecin Prodrugs from Dually Responsive Shell Cross-Linked Micelles

Author:
Hu Xianglong; Tian Jie; Liu Tao; Zhang Guoying; Liu Shiyong
Source:
Macromolecules 2013 v.46 no.15 pp. 6243-6256
ISSN:
1520-5835
Subject:
aniline; benzaldehyde; bromine; catalytic activity; cell viability; chemical bonding; chlorine; composite polymers; copolymerization; crosslinking; cytosol; cytotoxicity; drug therapy; drugs; folate receptors; folic acid; hydrophilicity; hydrophobicity; irradiation; ligands; micelles; moieties; nanocarriers; neoplasm cells; neoplasms; pH; thiols; viability assays
Abstract:
... We report on the fabrication of dynamic covalent shell cross-linked (SCL) micelles with hydrophobic cores conjugated with photocaged chemotherapeutic drugs and coronas functionalized with ligands for tumor cell targeting. Two types of amphiphilic diblock copolymers, P(CL-g-CPT)-b-P(OEGMA-co-MAEBA)-CPT and PCL-b-P(OEGMA-co-MAEBA-co-FA), were synthesized via the combination of ring-opening copolymer ...
DOI:
10.1021/ma400691j

6. Acid-triggered drug release from micelles based on amphiphilic oligo(ethylene glycol)–doxorubicin alternative copolymers

Author:
Ying Wang; Qiaojie Luo; Rui Sun; Guangyu Zha; Xiaodong Li; Zhiquan Shen; Weipu Zhu
Source:
Journal of materials chemistry B 2014 v.2 no.43 pp. 7612-7619
ISSN:
2050-7518
Subject:
aqueous solutions; benzaldehyde; biocompatibility; cancer therapy; composite polymers; condensation reactions; cytotoxicity; drugs; esterification; imines; malic acid; micelles; moieties; molecular weight; nanocarriers; neoplasm cells; neoplasms; pH; toxicity testing
Abstract:
... We report a facile strategy to synthesize pH-sensitive amphiphilic oligo(ethylene glycol) (OEG)–doxorubicin (DOX) alternative conjugates. Poly[oligo(ethylene glycol) malicate] (POEGM) with numerous pendent hydroxyl groups was first synthesized by the direct polycondensation of oligo(ethylene glycol) (OEG) with malic acid under mild conditions. Then, benzaldehyde groups were introduced into the POE ...
DOI:
10.1039/c4tb01231c

7. The templating effect of an easily available cationic polymer with widely separated charge centers on the synthesis of a hierarchical ZSM-5 zeolite

Author:
Yicheng Zhang; Kake Zhu; Xuezhi Duan; Xinggui Zhou; Weikang Yuan
Source:
Journal of materials chemistry A 2014 v.2 no.43 pp. 18666-18676
ISSN:
2050-7496
Subject:
benzaldehyde; butanol; catalytic activity; composite polymers; condensation reactions; cyclohexanones; methanol; nanocrystallites; polyamines; quaternary ammonium compounds; zeolites
Abstract:
... The epichlorohydrin-N,N-dimethyl-1,3-diaminopropane copolymer (PCA) has been introduced for the first time as a meso-template to successfully synthesize a hierarchical ZSM-5 zeolite (PCA-ZSM-5) with mesopores of 7–50 nm in diameter by using small-sized nanoblocks. However, when its structural analogue epichlorohydrin–dimethylamine polyamine (PCS) is used, the obtained ZSM-5 zeolite (PCS-ZSM-5) has ...
DOI:
10.1039/c4ta02325k

8. Fabrication of Functional Nano-objects through RAFT Dispersion Polymerization and Influences of Morphology on Drug Delivery

Author:
Qiu Liang; Xu Chao-Ran; Zhong Feng; Hong Chun-Yan; Pan Cai-Yuan
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.28 pp. 18347-18359
ISSN:
1944-8252
Subject:
benzaldehyde; cell viability; composite polymers; condensation reactions; cytotoxicity; doxorubicin; endocytosis; inhibitory concentration 50; nanorods; nanowires; organelles; polymerization; transmission electron microscopy
Abstract:
... To study the influence of self-assembled morphologies on drug delivery, four different nano-objects, spheres, nanorods, nanowires, and vesicles having aldehdye-based polymer as core, were successfully prepared via alcoholic RAFT dispersion polymerization of p-(methacryloxyethoxy)benzaldehyde (MAEBA) using poly((N,N′-dimethylamino)ethyl methacrylate) (PDMAEMA) as a macro chain transfer agent (macro ...
DOI:
10.1021/acsami.6b04693

9. Synthesis of hexagonal mesoporous silicates functionalized with amino groups in the pore channels by a co-condensation approach

Author:
Yunping Li; Wei Xiong; Chun Wang; Bo Song; Guolin Zhang
Source:
RSC advances 2016 v.6 no.59 pp. 53991-54000
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; benzaldehyde; catalysts; catalytic activity; composite polymers; condensation reactions; dimethyl sulfoxide; ethanol; flavanones; nitrogen; porosity; porous media; silicates; sol-gel processing; staining; surface area; transmission electron microscopy
Abstract:
... Mesoporous silicates functionalized with amino groups in the pore channels have been made by the co-condensation of tetraethoxyl siloxide (TEOS) with precursors of P–Si through a triblock copolymer-templated sol–gel process under acidic conditions. Poly(alkylene oxide) block copolymer (P123) was eluted by ethanol extraction and template molecules were removed by refluxing the materials in a mixtur ...
DOI:
10.1039/c5ra24597d

10. A new design of cleavable acetal‐containing amphiphilic block copolymers triggered by light

Author:
Yu Huang; Srinivas Thanneeru; Qian Zhang; Jie He
Source:
Journal of polymer science 2018 v.56 no.16 pp. 1815-1824
ISSN:
0887-624X
Subject:
benzaldehyde; composite polymers; dissociation; drug delivery systems; esters; hydrolysis; molecular weight; nuclear magnetic resonance spectroscopy; pH; polyethylene glycol; polymerization; ultraviolet-visible spectroscopy
Abstract:
... We report a new design of photolabile acetal‐containing amphiphilic block copolymers. Acetals as protecting groups for carbonyls or diols can be hydrolyzed under acidic condition but very stable with respect to hydrolysis at pH > 7. When combining light‐capturing chromophores with acetals, the hydrolysis of acetals can be activated by light to design dual responsive acetal‐containing polymers. Usi ...
DOI:
10.1002/pola.29062

11. Hydrogel Cross-Linked with Dynamic Covalent Bonding and Micellization for Promoting Burn Wound Healing

Author:
Ziyi Li; Fei Zhou; Zhiyong Li; Siyu Lin; Lei Chen; Lixin Liu; Yongming Chen
Source:
ACS applied materials & interfaces 2018 v.10 no.30 pp. 25194-25202
ISSN:
1944-8252
Subject:
adhesion; benzaldehyde; biocompatibility; bromides; chemical bonding; composite polymers; crosslinking; drainage; gelation; histopathology; hyaluronic acid; hydrazides; hydrogels; models; staining; strength (mechanics); tetrazolium; wound treatment
Abstract:
... A novel hydrogel (HA-az-F127 hydrogel) formed by reacting hydrazide modified hyaluronic acid (HAAD) and benzaldehyde terminated F127 triblock copolymers (BAF127) was developed in this work. The hydrogel with dynamic covalent chemically and micellar physically double-cross-linked networks exhibited rapid gelation and shear thinning properties. Besides, the hydrogel possessed functions, such as adap ...
DOI:
10.1021/acsami.8b08165

12. Visible light‐induced RAFT polymerization of methacrylates with benzaldehyde derivatives as organophotoredox catalysts

Author:
Qian Yang; Xianhong Zhang; Wenchao Ma; Yuhong Ma; Dong Chen; Li Wang; Changwen Zhao; Wantai Yang
Source:
Journal of polymer science 2018 v.56 no.2 pp. 229-236
ISSN:
0887-624X
Subject:
ambient temperature; benzaldehyde; catalysts; composite polymers; electron transfer; molecular weight; polymerization; polymethylmethacrylate
Abstract:
... The benzaldehyde derivatives, such as 2,4‐dimethoxy benzaldehyde (PC1) and p‐anisaldehyde (PC2), were successfully used as photoredox catalysts (PCs) in combination with typical RAFT agent 4‐cyano‐4‐(phenylcarbonothioylthio)pentanoic acid (CTP) for the controlled photoinduced electron transfer RAFT polymerization (PET‐RAFT) of methyl methacrylate (MMA) and benzyl methacrylate (BnMA) at room temper ...
DOI:
10.1002/pola.28890

13. B(C₆F₅)₃-Catalyzed Group Transfer Polymerization of Acrylates Using Hydrosilane: Polymerization Mechanism, Applicable Monomers, and Synthesis of Well-Defined Acrylate Polymers

Author:
Yougen Chen; Qun Jia; Yuansheng Ding; Shin-ichiro Sato; Liang Xu; Chunyu Zang; Xiande Shen; Toyoji Kakuchi
Source:
Macromolecules 2019 v.52 no.3 pp. 844-856
ISSN:
1520-5835
Subject:
Lewis acids; Lewis bases; acrylates; benzaldehyde; catalysts; composite polymers; copolymerization
Abstract:
... We demonstrated the B(C₆F₅)₃-catalyzed group transfer polymerization (GTP) of acrylate monomers with hydrosilane by the in situ formation of silyl ketene acetals (SKAs) as the initiator by the B(C₆F₅)₃-catalyzed 1,4-hydrosilylation of acrylate monomers and hydrosilane. In addition, this new GTP method was clarified in terms of the polymerization mechanism, scope and limitation of the acrylate mono ...
DOI:
10.1021/acs.macromol.8b02245

14. Cationic Copolymerization of o-Phthalaldehyde and Functional Aliphatic Aldehydes

Author:
Anthony Engler; Oluwadamilola Phillips; Ryan C. Miller; Cassidy Tobin; Paul A. Kohl
Source:
Macromolecules 2019 v.52 no.11 pp. 4020-4029
ISSN:
1520-5835
Subject:
Lewis acids; ambient temperature; benzaldehyde; boron; catalysts; composite polymers; copolymerization; crosslinking; depolymerization; mechanical properties; methylene chloride; moieties; molecular weight; solvents
Abstract:
... There has been a resurgence of research related to poly(phthalaldehyde) (PPHA) in the past several years because of the demonstration of long room-temperature lifetime and its low ceiling temperature facilitating the ability to rapidly depolymerize the polymer at ambient conditions. This rapid depolymerization upon triggering of PPHA mixtures makes them well suited for fabricating transient device ...
DOI:
10.1021/acs.macromol.9b00740

15. Zwitterionic shielded polymeric prodrug with folate-targeting and pH responsiveness for drug delivery

Author:
Lei Li; Yue Song; Jinlin He; Mingzu Zhang; Jian Liu; Peihong Ni
Source:
Journal of materials chemistry B 2019 v.7 no.5 pp. 786-795
ISSN:
2050-7518
Subject:
Lewis acids; Lewis bases; adhesion; adsorption; aqueous solutions; benzaldehyde; biocompatibility; cell membranes; composite polymers; copolymerization; cytotoxicity; dissociation; doxorubicin; drug therapy; human cell lines; light scattering; moieties; nanoparticles; neoplasm cells; neoplasms; pH; particle size; phosphorylcholine; polyethylene glycol; schiff bases; tetrazolium; transmission electron microscopy; zwitterions
Abstract:
... Zwitterionic polymers are a class of polymers that acts as both Lewis base and Lewis acid in solution. These polymers not only have excellent properties of hydration, anti-bacterial adhesion, charge reversal and easy chemical modification, but also have characteristics of long-term circulation and suppress nonspecific protein adsorption in vivo. Here, we describe a novel folate-targeted and acid-l ...
DOI:
10.1039/c8tb02772b

16. Glycopolymer decorated multiwalled carbon nanotubes for dual targeted breast cancer therapy

Author:
Pinar Sinem Omurtag Ozgen; Sezen Atasoy; Belma Zengin Kurt; Zehra Durmus; Gulsah Yigit; Aydan Dag
Source:
Journal of materials chemistry B 2020 v.8 no.15 pp. 3123-3137
ISSN:
2050-7518
Subject:
benzaldehyde; biocompatibility; breast neoplasms; cancer therapy; carbon nanotubes; coatings; composite polymers; confocal laser scanning microscopy; doxorubicin; drug delivery systems; folate receptors; folic acid; glucose transporters; human cell lines; human diseases; hydrophilicity; hydrophobicity; image analysis; neoplasm cells; polymerization; toxicity; transmission electron microscopy
Abstract:
... Carbon-based nanomaterials (CNMs) have attracted great attention in biomedical applications such as cancer imaging and therapy. CNMs, which are currently used in a wide range of applications, suffer from drawbacks of toxicity and low biocompatibility. Either noncovalent or covalent functionalization of CNMs with hydrophilic and biocompatible polymers which help to block hydrophobic interactivity b ...
DOI:
10.1039/c9tb02711d

17. Tunable Fluorescence and Room-Temperature Phosphorescence from Multiresponsive Pure Organic Copolymers

Author:
Fan Gu; Bingbing Ding; Xiang Ma; He Tian
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.4 pp. 1578-1583
ISSN:
1520-5045
Subject:
acrylamides; ambient temperature; benzaldehyde; composite polymers; copolymerization; energy transfer; fluorescence; humidity; irradiation; moieties; phosphorescence; ultraviolet radiation; white light
Abstract:
... Stimuli-responsive polymers have received growing attention in the photochromic area of applied materials undoubtedly. It remains a great challenge to achieve multifunctional luminescence materials with a multitudinous stimuli response. Three color-convertible copolymers are obtained with the relative copolymerization of benzaldehyde, 2,5-dihydroxy terephthalate, spiropyran (SP), and acrylamide. T ...
DOI:
10.1021/acs.iecr.9b06314

18. Assembly of Silicalite-1 Crystals Like Toy Lego Bricks into One-, Two-, and Three-Dimensional Architectures for Enhancing Its Adsorptive Separation and Catalytic Performances

Author:
Shiying Li; Hu Shi; Sen Wang; Zhikai Li; Pengfei Wang; Xingchen Liu; Yanhong Quan; Mei Dong; Jianguo Wang; Weibin Fan
Source:
ACS applied materials & interfaces 2021 v.13 no.48 pp. 58085-58095
ISSN:
1944-8252
Subject:
1-propanol; adsorption; benzaldehyde; butanol; catalytic activity; composite polymers; cyclohexanones; energy; ethanol; gels; nanocrystallites; nanosheets; spectroscopy; zeolites
Abstract:
... Many researchers have contributed to the assembly of zeolitic nanosheets and nanocrystallites into three-dimensional (3D) networks as it can remarkably improve the catalytic and/or adsorptive performances of zeolites. However, the applications of these synthesized materials are seriously limited because of low hydrothermal stability. A highly interesting strategy, but a great challenge, is the ali ...
DOI:
10.1021/acsami.1c15226

19. Self-healing and mechanical performance of dynamic glycol chitosan hydrogel nanocomposites

Author:
Spyridon Efstathiou; Alan M. Wemyss; Georgios Patias; Lucas Al-Shok; Maria Grypioti; Despina Coursari; Congkai Ma; Christophe J. Atkins; Ataulla Shegiwal; Chaoying Wan; David M. Haddleton
Source:
Journal of materials chemistry B 2021 v.9 no.3 pp. 809-823
ISSN:
2050-7518
Subject:
acrylamides; benzaldehyde; chitosan; composite polymers; drugs; encapsulation; graphene oxide; hydrogels; hydrophilicity; hydrophobicity; imines; nanocomposites; nanosheets; polyacrylamide; rheology; schiff bases
Abstract:
... The application of functional self-healing and mechanically robust hydrogels in bioengineering, drug delivery, soft robotics, etc., is continuously growing. However, fabricating hydrogels that simultaneously possess good mechanical and self-healing properties remains a challenge. Developing robust hydrogel formulations for the encapsulation and release of hydrophobic substances is a major challeng ...
DOI:
10.1039/d0tb02390f

20. Temperature-Responsive Aldehyde Hydrogels with Injectable, Self-Healing, and Tunable Mechanical Properties

Author:
Jianyang Zhao; Yi-Yang Peng; Jinquan Wang; Diana Diaz-Dussan; Wendy Tian; Wei Duan; Lingxue Kong; Xiaojuan Hao; Ravin Narain
Source:
Biomacromolecules 2022 v.23 no.6 pp. 2552-2561
ISSN:
1526-4602
Subject:
benzaldehyde; biocompatibility; cell viability; composite polymers; crosslinking; cytotoxicity; encapsulation; fibroblasts; gelatinization temperature; hydrogels; hydrogen; hydrophobic bonding; hydrophobicity; lungs; methyl ethers; phosphorylcholine
Abstract:
... Injectable and self-healing hydrogels with exemplary biocompatibility and tunable mechanical properties are urgently needed due to their significant advantages for tissue engineering applications. Here, we report a new temperature-responsive aldehyde hydrogel with dual physical-cross-linked networks and injectable and self-healing properties prepared from an ABA-type triblock copolymer, poly{[FPMA ...
DOI:
10.1021/acs.biomac.2c00260