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37 matches found for ultraviolet_visible_spectroscopy

CoMoCAT® Single-wall Carbon Nanotubes

Related Products • Carbon Nanomaterials • Graphene Technologies • Nanomaterials Resources Related Articles • Carbon Nanomaterials: Elemental Analyses and Quantification of Their Accumulation in Living Cells • Boron Nitride Nanotubes: Properties, Synthesis and Applications • Novel Properties and Appl...

Ultra-High Efficiency Perovskite-Perovskite Tandem Solar Cells

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA *Email: Next generation solar cells have the potential to achieve conversion efficiencies beyond the Shockley-Queisser (S-Q) limit while also significantly lowering production costs. ...

Reactive Silver Inks for High-Performance Printed Electronics

S. Brett Walker,1,2 Bok Yeop Ahn,3* Jennifer A. Lewis1,3,4 1Materials Science and Engineering Department University of Illinois at Urbana-Champaign, Urbana, IL 61801 2Electroninks Incorporated, Champaign, IL 61820 3Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, ...

siRNA Frequently Asked Questions for Functional Genomics and RNAi

If you do not find the answer here in our FAQ (frequently asked questions), please send a request to General Duplex Design Experiment & Analysis in vivo Applications & N-TER Use Validation & Guarantee What is siRNA? siRNA (short [or small] interfering RNA) is a class of small ...

A Fluorescence Derivatization Reagent for the Liquid Chromatographic Determination of Airborne Isocyanates

Hartmut Henneken, Uwe Karst and Martin Vogel ......... Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands. Currently, mono- and diisocyanates are widely applied for the industrial production of pharmaceuticals,...

Solvent Center - Let us help you find just the right solvent for your specific need.

We are committed to providing our customers with the right solvent for their specific application. The Solvent Center was created to aid all visitors in their exploration of the right solvent by providing a concise summary of solvents by purity, grade, application, product lines or market. Packaging...

OSHA 215 – Products and Materials Guide

Hexavalent Chromium This test method uses ses HPLC to monitor Chromium Hexavalent. This method should be used by industrial hygienists experienced in monitoring for exposures and analysts experienced in the use of ion chromatography and the interpretation of ion chromatograms. Samples are taken in t...

Oligonucleotide FAQ (Frequently Asked Questions)

Our customer service representatives and technical service scientists are more than happy to answer any questions that you may have regarding oligonucleotides. However, you may find the answer you need here. Designs Do you offer design assistance? Yes, you can perform real-time PCR / qPCR designs us...

Water for Spectrophotometry

Many molecules absorb in the ultraviolet (UV) and visible (Vis) range of the electromagnetic spectrum. UV radiation covers the range from 190-350 nm, while visible radiation covers the 350-800 nm range. The absorption of radiation corresponds to the excitation of outer electrons in the molecule. In ...

Gold Nanoparticles: Properties and Applications

Related Products • Gold Nanoparticles • Silver Nanoparticles • Nanomaterials • Specialty Polymers and Nanomaterials for Drug Delivery Related Articles • Gold Nanostructures • Silver Nanoparticles: Properties and Applications • Silver Nanomaterials: Properties & Applications • Silica Coated Gold Nano...

Quantum Dots for Electronics and Energy Applications

What are Quantum Dots? Perovskite Quantum Dots PbS Quantum Dots Quantum Dot Applications Light Emitting Diodes (LEDs) Lighting Solar Cells Photodectors Biomedical Imaging Quantum dots (QDs) are nanometer sized (~2-10 nm) semiconducting material. Owing to their small size, QDs exhibit quantum confine...

Non-Fullerene Acceptors for Organic Photovoltaic Applications

Organic photovoltaics The emerging organic photovoltaic (OPV) technology is very promising for low-cost solar energy production. OPV devices can be produced using high-throughput, large-volume printing methods on lightweight and flexible plastic substrates, making them easy to deploy and use in inno...

Enhanced Separation Capability in SIC using a Fused-Core® Column

Enhanced Separation Capability in Sequential Injection Chromatography using an Ascentis® Express Column Based on Fused-Core® Particle Technology The following was generated with the assistance of an outside source using Sigma-Aldrich products. Technical content was generated and provided by: Petr Ch...

An Alternative to the USP and EP Methods for the Analysis of Riboflavin (Vitamin B2)

Related Articles • Reporter US Volume 33.3 (4 Mb PDF) • UHPLC Analysis of Taxanes Using A Titan C18 Column and UV Detection • LC-MS Analysis of Vitamin D Metabolites • HPLC Separation of Nine Key Silymarin Components of Milk Thistle Using a Titan™ C18 Column with LC/MS/MS Detection An alternative to...

Optoelectronic Devices Based on Diketopyrrolopyrrole (DPP)-containing Conjugated Small Molecules

Jianhua Liu and Thuc-Quyen Nguyen* Center for Polymers and Organic Solids Department of Chemistry & Biochemistry University of California, Santa Barbara, California 93106, United States *Email: Optoelectronic devices such as light-emitting diodes (LEDs), solar cells, and light-em...

Single Walled Carbon Nanotubes

Richard Jansen and Philip Wallis* SouthWest NanoTechnologies, Inc. 2501 Technology Place Norman, OK 73071 *Email: Carbon nanotubes are materials that possess remarkable properties and offer extraordinary possibilities. This article gives a brief overview of the physico-chemical...

cGMP Manufacturing – SAFC - Buchs

SAFC Buchs, Switzerland specializes in complex, multi-step, organic custom synthesis of intermediates and raw materials from Phase I to Phase III clinical trials. This cGMP, ISO certified site provides a wide range of development and production capabilities, including Simulated Moving Bed (SMB) chro...

Analytical Characterization / Certifications

Cerilliant operates a state-of-the-art analytical laboratory providing custom services to its clients including: characterization and certification of client materials, material stability studies, analytical method development, and impurity and structure elucidation studies. Our expertise spans a wi...

Melting Temperatures of Oligonucleotides

How do you calculate the Tm of DNA? The melting temperature (Tm) of an oligonucleotide is the temperature at which 50% of the oligonucleotide is duplexed with its perfect complement and 50% is free in solution. Awareness of the Tm is critically important for numerous techniques in molecular biology,...

Sensitive Determination of Iron in Drinking Water, Mineral Water, Groundwater, and Spring Water Using Rapid Photometric Tests

The quality of drinking water is regulated by a variety of guidelines, such as the EU Council Directive 98/831,2 and WHO guideline.3 The key principles used to define these limits consider both health hazards and sensory and technical reasons. Iron, for example, does not exhibit a risk for health in...

Graphene Quantum Dots: Properties, Synthesis & Applications

Colloidal semiconductor quantum dots (QDs) have numerous potential applications in solar cells, light emitting diodes, bioimaging, electronic displays, and other optoelectronic devices due to their unique size-dependent electro-optical properties, and have thus been of significant research interest....

New conducting and semiconducting polymers for plastic electronics

Related eTool • OLED eFabricator • • Download PDF • In the emerging field of organic printable electronics, such as OLEDs and organic photovoltaics (OPVs), there is a significant need for improved organic conducting and semiconducting materials. This paper reports our recent progress in two fields: ...

Rapid Separation of Anthocyanins and Flavonol Glycosides Utilising Discovery® DSC-MCAX Solid Phase Extraction

• • Download PDF • Contributed Article Rockhurst University, Kansas City, MO, USA About Flavanols and Anthocyanins Flavonols and anthocyanins are water-soluble vacuolar flavonoid compounds that are synthesized by organisms of the plant kingdom. Flavonoids are widely distributed in plants fulfilling ...

OSHA 214 – Product & Materials Guide

Ozone in Workplace Atmospheres OSHA 214 describes sample collection and analysis for atmospheric ozone (O3) in the workplace. This method utilizes two nitrite-impregnated glass fiber filters (IGFF) held in a two-piece, polystyrene cassette. During sample collection, ozone reacts with the nitrite mol...

Development of Organic Semiconductors from Highly Ordered Oligo and Polythiophenes

Nicholas S. Colella, Lei Zhang, Alejandro L. Briseño* Polymer Science & Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003 *Email: The soaring global demand for energy, coupled with the limited supply of fossil fuels, has increased the need ...

Universal Platform for Surface Modification Employing Grafted Polymer Layers

• • Download PDF • Bogdan Zdyrko,1 Viktor Klep1 and Igor Luzinov*1,2 1School of Materials Science and Engineering, and 2Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, SC 29634 E-mail: Ultrathin (end-) grafted polymer layers are wel...

Low-extractable Millex Samplicity® filters are ideal for preparing samples for sensitive HPLC detectors

The Samplicity® filtration system was developed to filter up to 8 samples directly into standard HPLC vials using vacuum-based filtration. The samples can then be used in downstream HPLC analysis. Given the high sensitivity of high performance liquid chromatography (HPLC) and ultra-high pressure liq...

Glycine Hydrochloride for Cell Culture

• • Download PDF • PharmaGrade, manufactured under appropriate controls for use as a raw material in pharma or biopharmaceutical production. Suitable for cell culture. • Product Regulatory Datasheet • Cherokee Buffers Quality Overview • Cherokee Buffers Site and Supply Chain Security Overview 1. Gen...

Boron Nitride Nanotubes: Properties, Synthesis and Applications

Products • Nanopowders and Nanoparticle Dispersions • Carbon Nanotubes Related Links • Carbon Nanomaterials: Elemental Analyses and Quantification of Their Accumulation in Living Cells • CoMoCAT® Single-wall Carbon Nanotubes • Carbon Nanofiber Applications & Properties • Single, Double, MultiWall Ca...

Clean-up of Antibody Labeling Reactions Using Amicon® Ultra Filters

Using a standard Amicon® Ultra centrifugal filter, a few rounds of diafiltration can efficiently remove unincorporated label from an antibody labeling reaction without diluting the sample. Use the protocol below to remove unreacted fluorescent labels using centrifugal ultrafiltration devices. Remova...