title: Origin of chains of Au-PbS nano-dumbbells in space.
abstract: Self-assembled, one-dimensional (1D) nanomaterials are amenable building blocks for bottom-up nanofabrication processes. A current shortcoming in the self-assembly of 1D nanomaterials in solution phase is the need for specific linkers or templates under very precise conditions to achieve a handful of systems. Here we report on the origin of a novel self-assembly of 1D dumbbells consisting of Au tipped PbS nanorods into stable chains in solution without any linkers or templates. A realistic multi-particle model suggests that the mesophase comprises 1D dumbbells arrayed in chains formed by anisotropic van der Waals type interactions. We demonstrate an alternative recognition mechanism for directing the assembly of the 1D dumbbells, based on effective interaction between the neighboring dumbbells consisting of Au tips with complementary crystallographic facets that guides the entire assembly in space.
authors.affiliation: 1] Centre for Advanced Materials, Indian Association for the Cultivation of Science, 2A & 2B Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India [2].
authors.forename: Chandana
authors.initials: C
authors.lastname: Mondal
authors.forename: Ali Hossain
authors.initials: AH
authors.lastname: Khan
authors.forename: Bidisa
authors.initials: B
authors.lastname: Das
authors.forename: Somobrata
authors.initials: S
authors.lastname: Acharya
authors.forename: Surajit
authors.initials: S
authors.lastname: Sengupta
references.citation: Nano Lett. 2008 Nov;8(11):3858-64
references.pmid: 18823147
references.citation: Science. 2006 Apr 21;312(5772):420-4
references.pmid: 16497885
references.citation: Nat Nanotechnol. 2011 Dec 11;7(1):24-8
references.pmid: 22157725
references.citation: Science. 2002 Jul 12;297(5579):237-40
references.pmid: 12114622
references.citation: Nanotechnology. 2008 Feb 13;19(6):065201
references.pmid: 21730694
references.citation: Nano Lett. 2010 Aug 11;10(8):3028-36
references.pmid: 20698616
references.citation: Chem Soc Rev. 2011 Feb;40(2):656-71
references.pmid: 21218236
references.citation: J Am Chem Soc. 2010 Feb 17;132(6):1860-72
references.pmid: 20088520
references.citation: Phys Rev A Gen Phys. 1988 Sep 15;38(6):3098-3100
references.pmid: 9900728
references.citation: Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Apr;67(4 Pt 1):041710
references.pmid: 12786380
references.citation: J Am Chem Soc. 2009 Dec 2;131(47):17406-11
references.pmid: 19894717
references.citation: Nat Nanotechnol. 2011 Aug 21;6(9):580-7
references.pmid: 21857686
references.citation: J Am Chem Soc. 2008 Nov 19;130(46):15573-80
references.pmid: 18950167
references.citation: Nano Lett. 2009 Nov;9(11):3676-82
references.pmid: 19691346
references.citation: Nat Mater. 2005 Nov;4(11):801-2
references.pmid: 16379068
references.citation: J Am Chem Soc. 2006 Aug 9;128(31):10006-7
references.pmid: 16881617
references.citation: Science. 2002 Mar 29;295(5564):2418-21
references.pmid: 11923529
references.citation: Science. 2004 Jun 18;304(5678):1787-90
references.pmid: 15205530
references.citation: J Am Chem Soc. 2005 Mar 9;127(9):2800-1
references.pmid: 15740085
references.citation: Science. 2009 Jan 2;323(5910):112-6
references.pmid: 19119229
references.citation: Nano Lett. 2008 Feb;8(2):637-41
references.pmid: 18197720
references.citation: Phys Rev Lett. 2003 Mar 7;90(9):097402
references.pmid: 12689254
references.citation: Phys Rev Lett. 1996 Oct 28;77(18):3865-3868
references.pmid: 10062328
references.citation: Chem Commun (Camb). 2011 Aug 7;47(29):8421-3
references.pmid: 21706117
references.citation: Nano Lett. 2004 Aug;4(8):1407-1413
references.pmid: 29048902
references.citation: Langmuir. 2009 Dec 1;25(23):13545-50
references.pmid: 19842631
references.citation: Nano Lett. 2007 May;7(5):1213-9
references.pmid: 17397231
references.citation: J Am Chem Soc. 2008 Apr 9;130(14):4594-5
references.pmid: 18338893