Chemiluminescence

Abstract: Chemiluminescence is an essential topic in the study of chemistry. The reaction involves mixing two chemicals were to form an excited (high-energy) intermediate that releases energy as light. This experiment first synthesized luminol by reducing 5-nitro-2,3-dihyodropthlazine-1,4-dione, using sodium hydrosulfite (Na2S2O4) and 3M sodium hydroxide (NaOH). The amount of luminol collected was 0.2693 g with the percent yield of 161%. The product of the first reaction was then used to recreate the chemiluminescence experiment by mixing luminol, oxidizing agent (hydrogen peroxide), and base (any hydroxide base). This reaction emitted a blue light along with yielding phthalate salt. The experiment showed the importance of luminol in chemiluminescence and yielded much needed knowledge about reactions and how they…

One thing to note is that I would recommend that new samples be taken from the clothing at each testing stage and not to use the samples tested with LMG as according to a study by Alenazy, Refaat and Babu, 2015 the use of LMG to test samples that then go off for DNA analysis produce poor partial profiles, apparently due to the longevity of the LMG chemiluminescence…

A glow stick is a small plastic tube with chemicals inside it. When When you snap a glow stick and hear it crack it gives off a temporary glow. As you snap the glow stick and hear it crack. Chemicals inside the glow sticks starts to mix together. This is a process call chemiluminescence. Chemiluminescence is a process where light is produced by a chemical reaction. Instead of using an electrical source. An example of this would be if go outside during a fall night and see a firefly glowing…

Molecules Project 1: Chemiluminescence Luuk Adema & Ewout van der Veer S2794640 & S2680254 luukadema@hotmail.com & ewoutvanderveer@msn.com 31-10-14 F. Mecozzi, E. Hagting & M. van Zuylen Abstract Luminol was synthesized and the light intensity of its luminescence was tested. The yield of the synthesis was 55%. Measurements of the intensity of luminescence were done under standard and optimal conditions resulting in peak intensities of ±0.02 lux (standard) and ±0.03 lux (optimal). It has been…

them in a number of situations as well. One important aspect of glow sticks is that they are water proof, so if you ever go scuba diving or just want something to light up in your pool then glow sticks are perfect for that. Another feature of them is that they do not require any batteries at all so they are very simple to use, and one final thing that is interesting about glow sticks is they generate an insignificant, or small, amount of heat, sometimes no heat at all. However the most important…

researchers study how the pancreas works. It’s amazing how Green Fluoresce Protein has helped researches in a very effective way that it’s even saving humans life for finding cures and it also helps them study the world around them. The energy that has been absorbed by an electron does not always come from photons of light. Basically when the electron absorbs energy the atoms increase. In the other side when the energy level decreases it gives a light in return. An example of where this can be…

Most people who watch crime dramas (Law & Order, NCIS, or CSI) on TV know what the cops do when they’re at a crime scene. When cops are investigating a crime scene, they spray a special type of solution involving the chemical Luminol that glows blue in the dark. The topic of this experiment is to determine what other liquids can react with Luminol to make the solution glow blue in the dark. The independent variable would be the types of chemicals used (in cups) and the dependent variable would…

attract fish of different shapes and sizes. One of these types that certain fishermen use are lighting devices that attract fish. Some fish may be attracted to illuminated lures because they live in poor visibility conditions and low light. It is also important to light the bait so the fish could see it. The brighter the light the better, but since electronic light devices are expensive and unreliable, glow sticks prove to be more efficient. However, it is not as efficient as it may seem.…

light” - How it works is simple, an energy source pushes an electron of its atom out from its ‘ground’ state (low energy state) to an ‘exciting’ state (high energy state) - To return back to its ‘ground’ state, the electron from its atom must return the energy in the form of light - How it’s caused is due to multiple reasons: - Chemical or biochemical reactions - Activity of subatomic particles - Radiation - An example of a luminescence object is a star - A star shines due to nuclear…

Introduction How does temperature affect the time glow sticks stay lit? Glow sticks are fun, safe, and interesting to kids all around the year. These light sticks were made for military purposes which were patented in 1973, but Edwin Chandross of Bell Labs’ oxalyl chloride and hydrogen peroxide glow stick was patented in 1960’s. Chemiluminescence is a luminescence resulting from a chemical reaction which is how glow sticks work. A glow sticks has a glass vial, a small glass or plastic bottle…