Dimethyldioctadecylammonium bromide (also dioctadecyldimethylammonium bromide or DODAB) is a double-chained quaternary ammonium surfactant that forms unilamellar vesicles (ULVs) in water. Among various preparation methods, the ‘‘hot-water” method offers a simple procedure to prepare DODAB cationic vesicles by simply dissolving the DODAB in hot water above 50 °C, i.e., chain melting (main) transition, Tm.In general, the DSC thermograms of the unsonicated DODAB dispersions are dominated by two endotherms; the pre- (35–36 °C) and main transition (42.7–45 °C) peaks. Moreover, in literature reported the presence of a thirdendotherm (post transition) at 52.2 °C.The main transition (Tm) is ascribed to gel to liquid-crystalline phase transition in which the alkyl chains transform from solidlike to liquid-like state. The 10 mM DODAB is a critical concentration, below which the dispersions consist of large polydispersed unilamellar vesicles (ULVs) that exhibit a local (chain melting) transition at 43 °C, beyond which a structural transition occurs: ULVs --> MLVs (multilamellar vesicles) as indicated by the sudden increase in the dynamic moduli. However, above 10 mM DODAB, the dispersions are mostly formed by ULVs in coexistence with lamellar fragments resulting in a network that shows a rheogram similar to that of hexagonal liquid-crystalline phase. (Wikipedia).
Making Dimethylamine: A Chemical Used In Big Pharma
In this video we are going to make a chemical called dimethylamine from DMF. Dimethylamine is often used in pharmacology but my main use for it will be making various metal complexes. Get a 7% discount on your next purchase from laboratoriumdiscounter.com with the secret code "THYLABS202
From playlist Organic Chemistry
Isocyanogen Tetrabromide from Na Azotetrazole
Bromine rips apart our precious tetrazole groups to form an obscure molecular motif, needed to make the famed C2N14 energetic compound. Following the procedure from here: https://sciencemadness.org/scipics/Energetic_Derivatives_Of_Tetrazole.pdf Explosions&Fire2: https://www.youtube.com/c
From playlist Chemistry of Tetrazoles
Making Bromine From Pool Chlorine Tablets
In this video i am making bromine with TCCA (pool chemical), HCl and NaBr. Support my channel: https://www.patreon.com/chemiolis
From playlist Chemistry for home-labs and self-production
In this video I make hydrobromic acid from sulfuric acid and sodium bromide. You can also use potassium bromide.
From playlist Syntheses and Demonstrations
Making Triphenylarsine with Arsenic Metal
Support my channel with patreon: https://www.patreon.com/chemiolis In this video I am having my first attempt at organoarsenic chemistry. I bought an ampoule of arsenic metal which I chlorinated to arsenic(III)chloride using chlorine produced from pool chlorine tablets. I then used this t
From playlist Heavy Metal Chemistry
Make p-Chlorophenyl Acetonitrile - Step 4 in Pyrimethamine Synthesis
In this video we make p-chlorophenyl acetonitrile from the p-chlorobenzyl chloride and the sodium cyanide in a previous video. ( Complete pyrimethamine playlist so far: https://www.youtube.com/playlist?list=PLU79801KtVAU1XsTwHaKkqQoBgz_VYmPS ) Fortunately this is a very mild process and
From playlist Pyrimethamine
Synthesis of a Bromoalkane (n-Bromopropane)
In this video, I will be making n-bromopropane by brominating 1-propanol. The n-bromopropane can then be used in a Grignard reaction to make butyric acid (smell of vomit). Here is the video of me using it in a Grignard reaction: http://youtu.be/_wmx65zQk58 This process can be used as a
From playlist Syntheses and Demonstrations
NITRATION TIME! Making A Chemical Called Nitrobromobenzene
In this video we are going to nitrate bromobenzene to make nitrobromobenzene. Patreon: https://www.patreon.com/thyzoid Discord: https://discord.gg/UrjAt44HWH (Let me know if the discord link does not work) Instagram: https://www.instagram.com/thyzoyd/?hl=de 🐦 Twitter: https://twitter.com/
From playlist Organic Chemistry
Make Hydrobromic Acid Revisited 2018
We show how to make hydrobromic acid. Hydrobromic acid is the bromine analogue of hydrochloric acid. While too expensive to use as much as hydrochloric acid, it's often used when the bromine element itself is needed. For example a major use is the synthesis of organobromine compounds like
From playlist Home Science
Nobody reads the description anyways so here are links to Discord, Patreon, Instagram, Twitter and Reddit. Producing these videos ain’t cheap so I’d appreciate any support on patreon. Patreon: https://www.patreon.com/thyzoid Discord: https://discord.gg/UrjAt44HWH (Let me know if the disco
From playlist Inorganic Chemistry
Reaction Kinetics of Photoredox Cross Couplings with Dr. Yael Ben-Tal
In this Research Spotlight episode, Dr. Yael Ben-Tal (Lloyd-Jones group, University of Edinburgh) joins us to share her work on the kinetics of a photoredox cross coupling using nickel and iridium. Key reference: J. Am. Chem. Soc. 2022, 144, 15372–15382. https://doi.org/10.1021/jacs.2c068
From playlist Research Spotlights
In this video we are making bromine by reacting sodium bromide with chlorine gas. The chlorine gas was produced from TCCA and hydrochloric acid. I am available at other platforms where additional content is uploaded. Make sure to check these out in order not to miss out on something: Ins
From playlist Elements
Making a Strong Oxidizer: Potassium Bromate
In this video we are gong to make potassium bromate which is a strong oxidizing agent. It will be made directly from potassium bromide using an electrolytic cell. Do not try this at home as bromate is toxic and carcinogenic. Patreon: https://www.patreon.com/thyzoid Discord: https://discor
From playlist Organic Chemistry
Organic Chemistry 51B. Lecture 05. Alcohols, Ethers, and Epoxides Part 4.
UCI Chem 51B Organic Chemistry (Winter 2013) Lec 05. Organic Chemistry -- Alcohols, Ethers, and Epoxides -- Part 4 View the complete course: http://ocw.uci.edu/courses/chem_51b_organic_chemistry.html Instructor: David Van Vranken, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: htt
From playlist Chemistry 51B: Organic Chemistry
GCSE Science Revision Chemistry "Introducing Electrolysis"
Find my revision workbooks here: https://www.freesciencelessons.co.uk/workbooks In this video, we start looking at electrolysis. We explore why molten or aqueous ionic compounds can conduct electricity and then look at the reactions that take place at the cathode and at the anode.
From playlist 9-1 GCSE Chemistry Paper 1 Chemical Reactions
Recreating one of the weirdest reactions
**Reuploaded because I used a clip of BBC footage in the intro and it was automatically flagged by the system and demonetized. *At the 5min mark, I say 1.5g phenanthroline monohydrate, but 5g is written. It is indeed 1.5g though. ------------------------------------------- About a year a
From playlist Interesting Explanations
Testing for chlorides, bromides and iodides | Chemistry | FuseSchool
Testing for chlorides, bromides and iodides | Chemistry | FuseSchool Learn the basics about Testing for chlorides, bromides and iodides. What are these and which methods are used to test them? Find out more in this video! SUBSCRIBE to the FuseSchool YouTube channel for many more educa
From playlist CHEMISTRY: Chemical Tests
Making hydrazine sulfate from bleach
Well we made hydrazine sulfate. Nothing more to say. Don’t try this at home. Hydrazine is highly TOXIC AND CARCINOGENIC. We are only making it because we want to copper plate glass and we might also make luminol. Proper safety precautiuons were implemented (gas mask with a NEW hydrazine c
From playlist Inorganic Chemistry