Observation of Single Colloidal Platinum Nanocrystal Growth Trajectories Export

@article{citeulike:4826517, abstract = {Understanding of colloidal nanocrystal growth mechanisms is essential for the syntheses of nanocrystals with desired physical properties. The classical model for the growth of monodisperse nanocrystals assumes a discrete nucleation stage followed by growth via monomer attachment, but has overlooked particle-particle interactions. Recent studies have suggested that interactions between particles play an important role. Using in situ transmission electron microscopy, we show that platinum nanocrystals can grow either by monomer attachment from solution or by particle coalescence. Through the combination of these two processes, an initially broad size distribution can spontaneously narrow into a nearly monodisperse distribution. We suggest that colloidal nanocrystals take different pathways of growth based on their size- and morphology-dependent internal energies. 10.1126/science.1172104}, author = {Zheng, Haimei and Smith, Rachel K. and Jun, Young-wook and Kisielowski, Christian and Dahmen, Ulrich and Alivisatos, A. Paul}, citeulike-article-id = {4826517}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1172104}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/324/5932/1309}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/19498166}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=19498166}, doi = {10.1126/science.1172104}, journal = {Science}, keywords = {qd, sms}, month = {June}, number = {5932}, pages = {1309--1312}, posted-at = {2009-06-22 23:05:04}, priority = {2}, title = {Observation of Single Colloidal Platinum Nanocrystal Growth Trajectories}, url = {http://dx.doi.org/10.1126/science.1172104}, volume = {324}, year = {2009} }

TY - JOUR ID - citeulike:4826517 L3 - citeulike-article-id:4826517 N2 - Understanding of colloidal nanocrystal growth mechanisms is essential for the syntheses of nanocrystals with desired physical properties. The classical model for the growth of monodisperse nanocrystals assumes a discrete nucleation stage followed by growth via monomer attachment, but has overlooked particle-particle interactions. Recent studies have suggested that interactions between particles play an important role. Using in situ transmission electron microscopy, we show that platinum nanocrystals can grow either by monomer attachment from solution or by particle coalescence. Through the combination of these two processes, an initially broad size distribution can spontaneously narrow into a nearly monodisperse distribution. We suggest that colloidal nanocrystals take different pathways of growth based on their size- and morphology-dependent internal energies. 10.1126/science.1172104 IS - 5932 JF - Science EP - 1312 TI - Observation of Single Colloidal Platinum Nanocrystal Growth Trajectories VL - 324 SP - 1309 KW - qd KW - sms AU - Zheng, Haimei AU - Smith, Rachel AU - Jun, Young-wook AU - Kisielowski, Christian AU - Dahmen, Ulrich AU - Alivisatos, Paul PY - 2009/06/05/ UR - http://dx.doi.org/10.1126/science.1172104 ER -