We observed that diffusion of the monomer, stability of the initiator attachment to the surface, and aggregation of the particles controls the properties of the grafted polymers on particle surfaces. Polymers grafted from nanoparticle surfaces show higher polydispersity and lower molecular weight than those formed in solution. For the nanoparticles, the grafted polymers were cleaved and characterized by FTIR, NMR, AFM, TGA and SEC. Model studies were initially done on flat Si-wafer surface and recently with Au surfaces. SIP of polystyrene from Silicate and clay nanoparticles surfaces have been made by the living anionic polymerization method with 1, 1-diphenylethylene (DPE) initiation sites attached to nanoparticle surfaces using chlorosilane and amino functional groups. Understanding the surface chemistry issues involved is critical for future applications and protocols. “It’s something we can all do together on the first day of class to bring us together as Tar Heels,” said Franklin, whose first-day-of-school photos have stretched from kindergarten to today’s first sip photo at the Old Well.To investigate the grafting of polymer chains onto nanoparticles (metal, semi-conductor, inorganic, etc) and nanostructured (patterned) surfaces, we have investigated anionic surface initiated polymerization (SIP) on a variety of surfaces. One thing that hasn’t changed is the iconic landmark’s ability to inspire a sense of community. “The amount of good luck and good fortune you get from the Old Well seems to have grown immensely in student minds over the years, so it will be interesting to see how the legend grows and what actually happens when you take a sip from the Old Well on the first day,” Graham said. While students in the ’80s and ’90s sipped from the well for a dose of good luck for an exam, today’s Tar Heels hope for a 4.0 GPA. “I’ve found that if you go right before classes start, you’re definitely going to get on the Dean’s List at least!”Īlthough the Old Well itself traces its origins to the University’s founding in the 1790s, Graham said the first sip tradition has become a big deal only over the past several years. “I’m here every morning before my first class on the first day of classes,” said Taylor, who started her senior year in line at the Old Well this morning. Taylor Franklin, an environmental health sciences major from Morganton, North Carolina, has her own theory about the well’s powers and has put it to the test every semester. And it’s really in the 1990s that this idea emerged that it was good luck to do it on the first day of class.” “Alums from the ’80s talked about the idea that drinking out of the Old Well was good luck, so sometimes they would do it before a big exam. “Alums from the ’70s said that they didn’t remember it at all,” he said. He reached out to UNC-Chapel Hill alumni who graduated in the ’70s, ’80s and ’90s to learn the whole story. To find out when the tradition started, University archivist Nicholas Graham turned to a trusted tool: Facebook. Thousands of Carolina students line up at the well every year to test the theory for themselves.īut the legend’s origin has been a bit of a mystery. Legend has it that a sip from the Old Well on the first day of classes brings students good luck - even a perfect GPA. Athletics Display Sub Menu for Athletics.Life at Carolina Display Sub Menu for Life at Carolina.Gillings School of Global Public Health.Online and Distance Education Opens in new site.
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