Stepwise structural and fluorescent colour conversion in rhodamine analogues based on light and acid stimulations

2020 ◽  
Vol 8 (2) ◽  
pp. 543-549
Author(s):  
Masaru Tanioka ◽  
Shinichiro Kamino ◽  
Natsumi Koga ◽  
Daisuke Sawada
Keyword(s):  
Research And Development ◽  
Single Molecule ◽  
Material Science ◽  
Stimuli Responsive

The research and development of multi-stimuli, multi-responsive molecules have attracted considerable attention in chemistry, biology, and material science. Herein, we propose a multi-stimuli-responsive multi-fluorescence system in a single molecule.

scholarly journals The Single Molecule Magnets Mn12 and Fe8

2013 ◽  
pp. 106-118
Keyword(s):  
Single Molecule ◽  
Molecular Modelling ◽  
Material Science ◽  
Molecular Geometry ◽  
Cutting Edge ◽  
Science Students ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Ligand Interactions ◽  
Metal Ligand

In this exercise students will review a number of fundamental concepts including molecular geometry, electron configurations, magnetism, metal-ligand interactions, and material science. Students will use molecular modelling software to build, visualize and study a cutting edge material (single molecule magnet).

Progress in internal/external stimuli responsive fluorescent carbon nanoparticles for theranostic and sensing applications

2018 ◽  
Vol 6 (8) ◽  
pp. 1149-1178 ◽  
Author(s):  
Zihnil Adha Islamy Mazrad ◽  
Kyueui Lee ◽  
Ari Chae ◽  
Insik In ◽  
Haeshin Lee ◽  
...  
Keyword(s):  
Research And Development ◽  
Carbon Nanoparticles ◽  
Synthesis Method ◽  
Stimuli Responsive ◽  
Sensing Applications ◽  
Sensing Application ◽  
Fluorescent Carbon Nanoparticles ◽  
External Stimuli ◽  
Fluorescent Carbon

The research and development of fluorescent carbon nanoparticles, from their resources, synthesis method to applications in theranostic and sensing application have been attractive due to their unique properties.

Cutting the Cord: Progress in Untethered Soft Robotics and Actuators

MRS Advances ◽  
2019 ◽  
Vol 4 (51-52) ◽  
pp. 2787-2804 ◽  
Author(s):  
Meng Li ◽  
Nicholas A Ostrovsky-Snider ◽  
Metin Sitti ◽  
Fiorenzo G Omenetto
Keyword(s):  
Real World ◽  
Material Science ◽  
Degrees Of Freedom ◽  
Research Interest ◽  
Soft Robotics ◽  
Stimuli Responsive ◽  
New Materials ◽  
Real World Applications ◽  
Soft Actuators ◽  
Rigid Skeleton

AbstractIn recent decades, increasing research interest has shifted from traditional rigid skeleton robotics to flexible, shape-programmable, environmentally adaptive and stimuli-responsive “soft robotics”. Within this discipline, soft-robots capable of untethered and/or remote-controlled operation are of particular interest given their utility for actuation in complex situations with larger range of mobility and higher degrees of freedom. The use of new materials and the development of advanced fabrication techniques enable better performance and expand the utility of such soft actuators, moving them towards real-world applications. This review outlines some recent advances in untethered soft robotics and actuators to illustrate the promise of these applications at the interface of material science and device engineering.

Stimuli Responsive Nanoparticles for Controlled Anti-cancer Drug Release

2018 ◽  
Vol 25 (16) ◽  
pp. 1837-1866 ◽  
Author(s):  
Qi Tang ◽  
Bing Yu ◽  
Lilong Gao ◽  
Hailin Cong ◽  
Na Song ◽  
...  
Keyword(s):  
Side Effects ◽  
Drug Release ◽  
Cancer Chemotherapy ◽  
Material Science ◽  
Cancer Drug ◽  
Stimuli Responsive ◽  
The Past ◽  
Anti Cancer ◽  
Stimuli Response ◽  
Therapeutic Responses

Conventional drugs used for cancer chemotherapy have severe toxic side effects and show individually varied therapeutic responses. The convergence of nanotechnology, biology, material science and pharmacy offers a perspective strategy for cancer chemotherapy. Nanoparticles loaded with anti-cancer drug have been designed to overcome the limitations associated with conventional drugs, several nanomedicines have been approved by FDA and shown good performances in clinical practice. However, the therapeutic efficacies cannot be enhanced. Taking this into account, stimuli responsive nanoparticles present the ability to enhance therapeutic efficacy and reduce side effects. In this review, we systematically summarized the recent progresses of controlled anti-cancer drug release systems based on nanoparticles with different stimuli response including pH, temperature, light, redox and others. If the achievements of the past can be extrapolated into the future, it is highly likely that responsive nanoparticles with a wide array of desirable properties can be eventually developed for safe and efficient cancer therapy.

scholarly journals Non-covalent and reversible functionalization of carbon nanotubes

2014 ◽  
Vol 5 ◽  
pp. 1675-1690 ◽  
Author(s):  
Antonello Di Crescenzo ◽  
Valeria Ettorre ◽  
Antonella Fontana
Keyword(s):  
Carbon Nanotubes ◽  
Organic Solvents ◽  
Material Science ◽  
Stimuli Responsive ◽  
Covalent Functionalization ◽  
Pristine Cnts ◽  
Physicochemical Features ◽  
Diagnostic Applications ◽  
Functionalization Of Carbon Nanotubes

Carbon nanotubes (CNTs) have been proposed and actively explored as multipurpose innovative nanoscaffolds for applications in fields such as material science, drug delivery and diagnostic applications. Their versatile physicochemical features are nonetheless limited by their scarce solubilization in both aqueous and organic solvents. In order to overcome this drawback CNTs can be easily non-covalently functionalized with different dispersants. In the present review we focus on the peculiar hydrophobic character of pristine CNTs that prevent them to easily disperse in organic solvents. We report some interesting examples of CNTs dispersants with the aim to highlight the essential features a molecule should possess in order to act as a good carbon nanotube dispersant both in water and in organic solvents. The review pinpoints also a few examples of dispersant design. The last section is devoted to the exploitation of the major quality of non-covalent functionalization that is its reversibility and the possibility to obtain stimuli-responsive precipitation or dispersion of CNTs.

Uniting aggregation-induced emission and stimuli-responsive aggregation-caused quenching, single molecule achieved multicolour luminescence

2019 ◽  
Vol 7 (46) ◽  
pp. 14555-14562 ◽  
Author(s):  
Yunfei Zuo ◽  
Xing Wang ◽  
Decheng Wu
Keyword(s):  
Single Molecule ◽  
Stimuli Responsive ◽  
Aggregation Induced Emission

A single molecule uniting aggregation-induced emission and stimuli-responsive aggregation-caused quenching chromophores achieved mutilcolor luminescence.

scholarly journals Single-Molecule Junction Origami

2020 ◽  
Author(s):  
Chuanli Wu ◽  
Demetris Bates ◽  
Sara Sangtarash ◽  
Nicolò Ferri ◽  
Aidan Thomas ◽  
...  
Keyword(s):  
Single Molecule ◽  
External Perturbation ◽  
Stimuli Responsive ◽  
Power Spectral ◽  
Molecule Junction ◽  
Density Analysis ◽  
Power Spectral Density Analysis ◽  
Electrode Interface ◽  
Conductance Increase ◽  
Quantum Phenomena

Stimuli-responsive molecular junctions, where the conductance can be altered by an external perturbation, are an important class of nanoelectronic devices. These have recently attracted interest as large effects can be introduced through exploitation of quantum phenomena. We show here that significant changes in conductance can be attained as a molecule is repeatedly compressed and relaxed, resulting in molecular folding along a flexible fragment and cycling between an <i>anti</i> and a <i>syn </i>conformation. Power spectral density analysis and DFT transport calculations show that through-space tunnelling between two phenyl fragments is responsible for the conductance increase as the molecule is mechanically folded to the <i>syn</i> conformation. This phenomenon represents a novel class of mechanoresistive molecular devices, where the functional moiety is embedded in the conductive backbone and exploits intramolecular nonbonding interactions, in contrast to most studies where mechanoresistivity arises from changes in the molecule-electrode interface.

Usage and Impact of Science Direct Material Science Package in a Material Science Library

2018 ◽  
Vol 38 (1) ◽  
pp. 21
Author(s):  
Bhawana Srivastava ◽  
Sanjeev Kumar
Keyword(s):  
Research And Development ◽  
Full Text ◽  
Average Cost ◽  
Material Science ◽  
Library Services ◽  
Journal Articles ◽  
The Cost ◽  
Online Availability ◽  
The Impact ◽  
Article Study

<p>Defence Materials Stores and Research and Development Establishment (DMSRDE), Kanpur is working in the field of nonmetallic materials. This paper tries to evaluate the usage statistics of Science direct material science package of M/s Elsevier in terms of number of downloads of full text articles available to users of DMSRDE. Usage data of science direct material science package from 2005 to 2015 is analysed to assess the usability of journals in terms of highly utilised or non-utilised journals, average cost per article, and the impact of the online availability of journal articles on the library services. The study reveals that only 12 per cent of the highly used titles of package accounts for 65-66 per cent usage. The cost per article study supports package subscription over individually selected highly used titles. </p>

scholarly journals Novel Smart Textiles

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 950 ◽  
Author(s):  
George K. Stylios
Keyword(s):  
Quality Of Life ◽  
Built Environment ◽  
Research And Development ◽  
Material Science ◽  
Low Cost ◽  
Low Energy ◽  
Special Issue ◽  
Smart Textiles ◽  
End Uses

The sensing/adapting/responding, multifunctionality, low energy, small size and weight, ease of forming, and low-cost attributes of SMART textiles and their multidisciplinary scope offer numerous end uses in medical, sports and fitness, military, fashion, automotive, aerospace, built environment, and energy industries. The research and development for these new and high-value materials crosses scientific boundaries, redefines material science design and engineering, and enhances quality of life and our environment. “Novel SMART Textiles” is a focused special issue that reports the latest research of this field and facilitates dissemination, networking, discussion, and debate.

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