Molla Islam - Poly (N-isopropylacrylamide) microgel-based etalons and etalon arrays for determining the molecular weight of polymers in solution.

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      Publication Details (including relevant citation   information): Islam, Molla R., Serpe, Michael J.,   APL Mater., 2013, 1 (5), pp   052108/1-052108/7

      Abstract: Pos. and/or neg. charged poly   (N-isopropylacrylamide)-based microgels were deposited on a   single substrate and isolated regions of Au overlayers were   deposited on top of the microgels. Each spatially isolated Au   overlayer region had a different thickness to make an etalon   array. We found that areas with a thin Au overlayer (5 nm)   responded to a range of polymer mol. wts. (MW), while areas with   a thick overlayer (35 nm) can only respond to low mol. wt.   polyelectrolytes. By comparing the optical responses of the   device's individual array elements, a good approxn. of the   polyelectrolyte MW in soln. can be made. (c) 2013 American   Institute of Physics. [on SciFinder(R)]

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