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You searched for: Publication year rev 7986-2014 Remove constraint Publication year rev: 7986-2014 Subject term hydrophilicity Remove constraint Subject term: hydrophilicity
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1. 125I-Radiolabeling, Surface Plasmon Resonance, and Quartz Crystal Microbalance with Dissipation: Three Tools to Compare Protein Adsorption on Surfaces of Different Wettability

Author:
Luan Yafei; Li Dan; Wang Yanwei; Liu Xiaoli; Brash John L.; Chen Hong
Source:
Langmuir 2014 v.30 no.4 pp. 1029-1035
ISSN:
1520-5827
Subject:
adsorption; biocompatibility; biocompatible materials; equations; fibrinogen; gold; hydrophilicity; hydrophobicity; models; quartz crystal microbalance; radiolabeling; surface plasmon resonance; wettability
Abstract:
... The extent of protein adsorption is an important consideration in the biocompatibility of biomaterials. Various experimental methods can be used to determine the quantity of protein adsorbed, but the results usually differ. In the present work, self-assembled monolayers (SAMs) were used to prepare a series of model gold surfaces varying systematically in water wettability, from hydrophilic to hydr ...
DOI:
10.1021/la403498w

2. 3D Surface Functionalization of Emulsion-Templated Polymeric Foams

Author:
Viswanathan Priyalakshmi; Johnson David W.; Hurley Claire; Cameron Neil R.; Battaglia Giuseppe
Source:
Macromolecules 2014 v.47 no.20 pp. 7091-7098
ISSN:
1520-5835
Subject:
composite polymers; emulsions; foams; hydrophilicity; lipophilicity; oils; polymerization; surfactants
Abstract:
... We describe the preparation of porous polymeric scaffolds via polymerization of the oil phase in high internal phase water-in-oil-emulsions using amphiphilic block copolymers polystyrene-b-poly(ethylene oxide), polystyrene-b-poly(acrylic acid), poly(1,4-butadiene)-b-poly(ethylene oxide), and poly(1,4-butadiene)-b-poly(acrylic acid) as surfactants. We show that the block copolymers anchor to the po ...
DOI:
10.1021/ma500968q

3. 3D free-standing porous scaffolds made of graphene oxide as substrates for neural cell growth

Author:
M. C. Serrano; J. Patiño; C. García-Rama; M. L. Ferrer; J. L. G. Fierro; A. Tamayo; J. E. Collazos-Castro; F. del Monte; M. C. Gutiérrez
Source:
Journal of materials chemistry B 2014 v.2 no.34 pp. 5698-5706
ISSN:
2050-7518
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray photoelectron spectroscopy; adhesion; axons; cell growth; central nervous system; dendrites; graphene; graphene oxide; hydrophilicity; medicine; neural stem cells; neuroglia; scanning electron microscopy; tissue repair; viability
Abstract:
... The absence of efficient therapies for the treatment of lesions affecting the central nervous system encourages scientists to explore new materials in an attempt to enhance neural tissue regeneration while preventing inhibitory fibroglial scars. In recent years, the superlative properties of graphene-based materials have provided a strong incentive for their application in biomedicine. Nonetheless ...
DOI:
10.1039/c4tb00652f

4. A CO₂- and temperature-switchable “schizophrenic” block copolymer: from vesicles to micelles

Author:
Anchao Feng; Chengbo Zhan; Qiang Yan; Bowen Liu; Jinying Yuan
Source:
Chemical communications 2014 v.50 no.64 pp. 8958-8961
ISSN:
1364-548X
Subject:
aqueous solutions; carbon dioxide; chemical reactions; composite polymers; hydrophilicity; micelles; phase transition; temperature
Abstract:
... CO₂-responsiveness is imported into amphiphilic block copolymers, poly[(N,N-diethylaminoethyl methacrylate)-b-(N-isopropylacrylamide)] (PDEAEMA-b-PNIPAM), and a system dual-responsive to CO₂ and temperature is constructed. The copolymer self-assembles in aqueous solution, and undergoes phase transition when CO₂ and temperature stimuli occur, since the stimuli give rise to the conversion of the hyd ...
DOI:
10.1039/c4cc03156c

5. A CO₂-responsive surface with an amidine-terminated self-assembled monolayer for stimuli-induced selective adsorption

Author:
Nan Li; Larissa Thia; Xin Wang
Source:
Chemical communications 2014 v.50 no.30 pp. 4003-4006
ISSN:
1364-548X
Subject:
adsorption; carbon dioxide; chemical reactions; hydrophilicity; hydrophobicity; wettability
Abstract:
... A specific bifunctional molecule containing amidine is prepared to construct a CO₂-responsive surface via molecular self-assembly. The smart surface undergoes CO₂-responsive switching of surface charges and wettability, leading to distinctively selective adsorption of hydrophobic/hydrophilic molecules. ...
DOI:
10.1039/c4cc00412d

6. A Cell-Surface-Anchored Ratiometric Fluorescent Probe for Extracellular pH Sensing

Author:
Ke Guoliang; Zhu Zhi; Wang Wei; Zou Yuan; Guan Zhichao; Jia Shasha; Zhang Huimin; Wu Xuemeng; Yang Chaoyong James
Source:
ACS Applied Materials & Interfaces 2014 v.6 no.17 pp. 15329-15334
ISSN:
1944-8252
Subject:
DNA; cell membranes; cytotoxicity; fluorescent dyes; hydrophilicity; hydrophobic bonding; hydrophobicity; pH
Abstract:
... Accurate sensing of the extracellular pH is a very important yet challenging task in biological and clinical applications. This paper describes the development of an amphiphilic lipid–DNA molecule as a simple yet useful cell-surface-anchored ratiometric fluorescent probe for extracellular pH sensing. The lipid–DNA probe, which consists of a hydrophobic diacyllipid tail and a hydrophilic DNA strand ...
DOI:
10.1021/am503818n

7. A Color-Determining Amino Acid Residue of Proteorhodopsin

Author:
Ozaki Yuya; Kawashima Takayoshi; Abe-Yoshizumi Rei; Kandori Hideki
Source:
Biochemistry 2014 v.53 no.38 pp. 6032-6040
ISSN:
1520-4995
Subject:
absorption; amino acids; bacteria; color; high performance liquid chromatography; hydrogen bonding; hydrophilicity; hydrophobicity; isomers; mutants; pH; proton pump; rhodopsin; schiff bases
Abstract:
... Proteorhodopsin (PR) is a light-driven proton pump found in marine bacteria. More than 1000 PRs are classified as blue-absorbing (λₘₐₓ ∼ 490 nm) and green-absorbing (λₘₐₓ ∼ 525 nm) PRs. The color determinant is known to be at position 105, where blue-absorbing and green-absorbing PRs possess Gln and Leu, respectively. This suggests hydrophobicity at position 105 plays a key role in color tuning. H ...
DOI:
10.1021/bi500842w

8. A Discrete Amphiphilic Organoplatinum(II) Metallacycle with Tunable Lower Critical Solution Temperature Behavior

Author:
Wei Peifa; Cook Timothy R.; Yan Xuzhou; Huang Feihe; Stang Peter J.
Source:
Journal of the American Chemical Society 2014 v.136 no.44 pp. 15497-15500
ISSN:
1520-5126
Subject:
chemical bonding; ethylene glycol; hydrophilicity; hydrophobicity; phase transition; potassium; separation; temperature
Abstract:
... Oligo(ethylene glycol) (OEG)-decorated supramolecular assemblies are distinguished by their neutral character and macroscopic temperature-sensitive phase transition behavior. OEG functionalization is an emerging strategy to obtain thermoresponsive macrocyclic amphiphiles, although known methods organize the hydrophilic and hydrophobic segments by covalent bonding. Coordination-driven self-assembly ...
DOI:
10.1021/ja5093503

9. A Facile and Cost-Effective Method for Separation of Oil–Water Mixtures Using Polymer-Coated Iron Oxide Nanoparticles

Author:
Palchoudhury Soubantika; Lead Jamie R.
Source:
Environmental Science & Technology 2014 v.48 no.24 pp. 14558-14563
ISSN:
1520-5851
Subject:
air; cost effectiveness; hydrophilicity; iron oxides; nanocomposites; nanoparticles; oil spills; oils; polyols; remediation; sorption; toxicity; wastewater
Abstract:
... Catastrophic oil spills and oil from waste waters such as bilge and fracking waters pose major environmental concerns. The limitations of existing cleanup techniques for benign oil remediation has inspired a recent scientific impetus to develop oil-absorbing smart nanomaterials. Magnetic nanocomposites were here designed to allow easy recovery from various systems. In this study, sorption of refer ...
DOI:
10.1021/es5037755

10. A Facile and General Coating Approach to Moisture/Water-Resistant Metal–Organic Frameworks with Intact Porosity

Author:
Zhang Wang; Hu Yingli; Ge Jin; Jiang Hai-Long; Yu Shu-Hong
Source:
Journal of the American Chemical Society 2014 v.136 no.49 pp. 16978-16981
ISSN:
1520-5126
Subject:
catalytic activity; coordination polymers; humidity; hydrophilicity; hydrophobicity; porosity; sorption; vapors
Abstract:
... The moisture sensitivity of many metal–organic frameworks (MOFs) poses a critical issue for their large-scale real application. One of the most effective methods to solve this problem is to convert the surface of MOFs from hydrophilic to hydrophobic. Herein, we develop a general strategy to modify hydrophobic polydimethysiloxane (PDMS) on the surface of MOF materials to significantly enhance their ...
DOI:
10.1021/ja509960n

11. A Fiber-Optic Sensor for Accurately Monitoring Biofilm Growth in a Hydrogen Production Photobioreactor

Author:
Zhong Nianbing; Liao Qiang; Zhu Xun; Chen Rong
Source:
Analytical chemistry 2014 v.86 no.8 pp. 3994-4001
ISSN:
1520-6882
Subject:
Rhodopseudomonas palustris; biofilm; bioreactors; fiber optics; hydrogen production; hydrophilicity; monitoring; photosynthetic bacteria; polytetrafluoroethylene; surface roughness
Abstract:
... A new simple fiber-optic evanescent wave sensor was created to accurately monitor the growth and hydrogen production performance of biofilms. The proposed sensor consists of two probes (i.e., a sensor and reference probe), using the etched fibers with an appropriate surface roughness to improve its sensitivity. The sensor probe measures the biofilm growth and change of liquid-phase concentration i ...
DOI:
10.1021/ac500353y

12. A Flexible Glutamine Regulates the Catalytic Activity of Toluene o-Xylene Monooxygenase

Author:
Liang Alexandria Deliz; Wrobel Alexandra T.; Lippard Stephen J.
Source:
Biochemistry 2014 v.53 no.22 pp. 3585-3592
ISSN:
1520-4995
Subject:
Pseudomonas; X-ray diffraction; active sites; catalytic activity; glutamine; hydrophilicity; isotopes; mutants; oxygen; oxygenases; pH; site-directed mutagenesis; surface proteins
Abstract:
... Toluene/o-xylene monooxygenase (ToMO) is a bacterial multicomponent monooxygenase capable of oxidizing aromatic substrates. The carboxylate-rich diiron active site is located in the hydroxylase component of ToMO (ToMOH), buried 12 Å from the surface of the protein. A small, hydrophilic pore is the shortest pathway between the diiron active site and the protein exterior. In this study of ToMOH from ...
DOI:
10.1021/bi500387y
PubMed:
24873259
PubMed Central:
PMC4059525

13. A Fundamental Understanding of Catechol and Water Adsorption on a Hydrophilic Silica Surface: Exploring the Underwater Adhesion Mechanism of Mussels on an Atomic Scale

Author:
Mian Shabeer Ahmad; Yang Li-Ming; Saha Leton Chandra; Ahmed E.; Ajmal Muhammad; Ganz Eric
Source:
Langmuir 2014 v.30 no.23 pp. 6906-6914
ISSN:
1520-5827
Subject:
absorption; adhesion; adsorption; catechol; dihydroxyphenylalanine; energy; hydrophilicity; methodology; models; molecular dynamics; mussels; silica
Abstract:
... Mussels have a remarkable ability to bond to solid surfaces under water. From a microscopic perspective, the first step of this process is the adsorption of dopa molecules to the solid surface. In fact, it is the catechol part of the dopa molecule that is interacting with the surface. These molecules are able to make reversible bonds to a wide range of materials, even underwater. Previous experime ...
DOI:
10.1021/la500800f

14. A Kinetic Approach to the Sequence–Aggregation Relationship in Disease-Related Protein Assembly

Author:
Barz Bogdan; Wales David J.; Strodel Birgit
Source:
Journal of physical chemistry 2014 v.118 no.4 pp. 1003-1011
ISSN:
1520-5207
Subject:
amino acids; hydrophilicity; hydrophobicity; molecular dynamics; neurodegenerative diseases; peptides; prions
Abstract:
... It is generally accepted that oligomers of aggregating proteins play an important role in the onset of neurodegenerative diseases. While in silico aggregation studies of full length amyloidogenic proteins are computationally expensive, the assembly of short protein fragments derived from these proteins with similar aggregating properties has been extensively studied. In the present work, molecular ...
DOI:
10.1021/jp412648u
PubMed:
24401100
PubMed Central:
PMC3908877

15. A New Method for Developing Industrially Viable Nanocrystalline Cellulose-based Nanocomposites via Melt Compounding

Author:
Marta Martínez-Sanz; Amparo López-Rubio; Maria José Fabra; José M. Lagaron
Source:
Journal of renewable materials 2014 v.2 no.2 pp. 107-117
ISSN:
2164-6325
Subject:
biobased products; cellulose; crystal structure; freeze drying; hydrophilicity; hydrophobicity; melting; methodology; nanocomposites; nanocrystals; thermal stability
Abstract:
...

Due to their high crystallinity and aspect ratio, bacterial cellulose nanowhiskers (BCNW) represent an appealing choice for the development of fully biobased nanocomposite materials with high barrier performance. However, their strong tendency to self-associate, together with their highly hydrophilic character, has restricted the production of nanocomposites containing cellulose nanowhiskers by ...

DOI:
10.7569/JRM.2014.634106

16. A New Stationary Phase for Hydrophilic Interaction Chromatography: Polyacrylate-Based Hydrophilic, Monosized-Porous Beads with Zwitterionic Molecular Brushes

Author:
Bekir Çelebi; Begüm Özen; Çiğdem Kip; Ali Tuncel
Source:
Chromatographia 2014 v.77 no.21-22 pp. 1511-1520
ISSN:
0009-5893
Subject:
ammonium hydroxide; bromine; brushes; hydrophilic interaction chromatography; hydrophilicity; nucleosides; organic acids and salts; peptides; polymerization; porous media; slurries; zwitterions
Abstract:
... Hydrophilic, polyacrylate-based, monosized-porous beads with zwitterionic molecular brushes were synthesized as a new stationary medium for hydrophilic interaction chromatography. Monosized-porous poly(glycerol-1,3-diglycerolate diacrylate-co-glycerol dimethacrylate), poly(GDGDA-co-GDMA), beads 5 μm in size were obtained by a staged-shape template polymerization. As an initiator for surface-initia ...
DOI:
10.1007/s10337-014-2754-1

17. A Novel Photoresponsive Azobenzene-Containing Miktoarm Star Polymer: Self-Assembly and Photoresponse Properties

Author:
Blasco Eva; Schmidt Bernhard V. K. J.; Barner-Kowollik Christopher; Piñol Milagros; Oriol Luis
Source:
Macromolecules 2014 v.47 no.11 pp. 3693-3700
ISSN:
1520-5835
Subject:
composite polymers; encapsulation; fluorescent dyes; hydrophilicity; hydrophobicity; image analysis; irradiation; rhodamines; transmission electron microscopy; ultraviolet radiation
Abstract:
... We report the synthesis and characterization of a novel azobenzene-containing miktoarm star polymer AB₃ (Mₙ = 9700 g mol–¹, ĐM = 1.10) as well as its self-assembly properties in water. The miktoarm copolymer is composed of a hydrophobic azopolymer and three hydrophilic PEG arms (Mₙ = 600 g mol–¹). The hydrophobic/hydrophilic ratio of the amphiphilic miktoarm polymer is 78/22, leading to the format ...
DOI:
10.1021/ma500254p

18. A Proteomics Strategy for the Identification of FAT10-Modified Sites by Mass Spectrometry

Author:
Leng Ling; Xu Changming; Wei Chao; Zhang Jiyang; Liu Boya; Ma Jie; Li Ning; Qin Weijie; Zhang Wanjun; Zhang Chengpu; Xing Xiaohua; Zhai Linhui; Yang Fan; Li Mansheng; Jin Chaozhi; Yuan Yanzhi; Xu Ping; Qin Jun; Xie Hongwei; He Fuchu; Wang Jian
Source:
Journal of Proteome Research 2014 v.13 no.1 pp. 268-276
ISSN:
1535-3907
Subject:
RNA; amino acids; apoptosis; chemical bonding; eukaryotic cells; humans; hydrophilicity; immune response; liquid chromatography; loci; major histocompatibility complex; neoplasms; precipitin tests; proliferating cell nuclear antigen; protein folding; proteome; proteomics; tandem mass spectrometry
Abstract:
... The ubiquitin-like protein FAT10 (HLA-F adjacent transcript 10) is uniquely expressed in mammals. The fat10 gene is encoded in the MHC class I locus in the human genome and is related to some specific processes, such as apoptosis, immune response, and cancer. However, biological knowledge of FAT10 is limited, owing to the lack of identification of its conjugates. FAT10 covalently modifies proteins ...
DOI:
10.1021/pr400395k

19. A Rapid One-Step Fabrication of Patternable Superhydrophobic Surfaces Driven by Marangoni Instability

Author:
Kang Sung-Min; Hwang Sora; Jin Si-Hyung; Choi Chang-Hyung; Kim Jongmin; Park Bum Jun; Lee Daeyeon; Lee Chang-Soo
Source:
Langmuir 2014 v.30 no.10 pp. 2828-2834
ISSN:
1520-5827
Subject:
coatings; contact angle; convection; ethanol; evaporation; hydrophilicity; hydrophobicity; liquids; nanotechnology; oils; polymerization; roughness; solvents; transportation
Abstract:
... We present a facile and inexpensive approach without any fluorinated chemistry to create superhydrophobic surface with exceptional liquid repellency, transportation of oil, selective capture of oil, optical bar code, and self-cleaning. Here we show experimentally that the control of evaporation is important and can be used to form superhydrophobic surface driven by Marangoni instability: the metho ...
DOI:
10.1021/la500266f

20. A Simple Atomic-Level Hydrophobicity Scale Reveals Protein Interfacial Structure

Author:
Lauren H. Kapcha; Peter J. Rossky
Source:
Journal of Molecular Biology 2014 v.426 pp. 484-498
ISSN:
0022-2836
Subject:
amino acids; binding proteins; chemical elements; hydrophilicity; hydrophobicity; protein structure
Abstract:
... Many amino acid residue hydrophobicity scales have been created in an effort to better understand and rapidly characterize water–protein interactions based only on protein structure and sequence. There is surprisingly low consistency in the ranking of residue hydrophobicity between scales, and their ability to provide insightful characterization varies substantially across subject proteins. All cu ...
DOI:
10.1016/j.jmb.2013.09.039