01279nas a2200157   4500008004100000022001400041245006500055210006500120260011000185300001400295490000600309520065900315100002400974700002400998856009901022       2013                        eng d  a2046-206900aOne pot room temperature synthesis of robust gold nanochains0 aOne pot room temperature synthesis of robust gold nanochains  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a4261-42700 v33 a<p>We report a room temperature reduction and stabilization of gold nanoparticles (AuNPs) from auric chloride in the presence of 1.5 and 3 mM linear poly(amidoamine) (PAmAm), which leads to 1D assembly of AuNPs. At higher concentrations, isolated AuNPs are formed. Detailed investigations show that the morphology is governed primarily by pH rather than concentration. This is the first report to demonstrate the stability of nanochains against pH switching. The nanochains are robust as revealed by stability at higher temperature, salt concentration, thiol exchange, and would be useful in developing electronic devices for biological applications.</p>1 aBiradar, Satish, C.1 aKulkarni, Mohan, G.  uhttps://library.ncl.res.in/content/one-pot-room-temperature-synthesis-robust-gold-nanochains-002013nas a2200181   4500008004100000245012100041210006900162260000800231300001400239490000800253520131800261100002601579700002801605700002401633700002401657700002101681856012901702       2016                        eng d00aPreparation and characterization of microcapsules containing industrially important reactive water-soluble polyamine0 aPreparation and characterization of microcapsules containing ind  cDEC  a2039-20500 v2943 aPolyurea microcapsules containing water-soluble reactive polyamine, namely, polyaziridine (A33), were prepared by interfacial polymerization technique in non-aqueous medium, wherein (i) A33 was encapsulated for the first time as a neat amine without forming its salt or adduct and (ii) microcapsules formed were without any deleterious effect on A33. A systematic study was conducted by preparing microcapsules with different polyurea wall architectures. Fourier transform infrared (FTIR) and proton nuclear magnetic resonance (H-1 NMR) spectroscopic analysis of extracted A33 from microcapsules do not show any structural changes during microencapsulation. A titration method was developed to analyze the amount of encapsulated A33 quantitatively. Polyurea microcapsules obtained from reaction of ethylene diamine (E) and isophorone diisocyanate (I) monomers have shown better properties such as encapsulation efficiency and extent of agglomeration. Significant reduction in the size was observed when microcapsules of EI wall material were prepared by homogenizing the initial emulsion of A33 in paraffin oil. The process described in this paper for the preparation of microcapsules is cost-effective and industrially viable, which can find applications in agrochemicals, coatings, self-healing composites, etc.1 aShukla, Parshuram, G.1 aJagtap, Siddheshwar, B.1 aBiradar, Satish, C.1 aCharpe, Vaibhav, P.1 aJadhav, Arun, S.  uhttps://library.ncl.res.in/content/preparation-and-characterization-microcapsules-containing-industrially-important-reactive