DDAB‐Triggered, Size‐Sorted, Instant Phase‐Switching of Silver Nanoparticles. Issue 10 (7th April 2017)

• Record Type: Journal Article
• Authors: Mishra, Richa; Mishra, Shubham; Upadhyay, Chandan; Prakash, Rajiv
• Is Part Of: ChemistrySelect. Volume 2:Issue 10(2017)
• Page Start: 3028
• Page End: 3034
• Publication Date: 2017-04-07
• Subjects: DDAB -- Phase switching -- Self-assembly -- Size-sorting -- Water-chloroform interface; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201602012
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Silver nanoparticles, trending in nano‐world plead of a quick and alluring cost‐effective approach towards obtaining narrowed particle size. In response, we exploit here duality of didodecyldimethylammonium bromide (DDAB) as efficient phase‐switcher as well as stabilizer for quick transfer of aqueous synthesized silver nanoparticles into chloroform. The hydrophobic force gradient across the interface in presence of DDAB facilitate in obtaining the desired physical dimensions of the particles heading towards their self‐assembly upto 0.5 μm. Phase transferred silver particles are characterized by SPR in UV‐vis spectroscopy and TEM alongwith systematic study of particle size distribution with DDAB concentration. XRD and SAED patterns authorize the crystallinity of silver while FT‐IR and XPS elucidate their stabiity in the organocolloid. This programmed monodispersed self‐assembly technique suggests the possibility of its application in spontaneously organized electronic devices. Abstract : The hydrophobic force gradient across the water‐chloroform interface in presence of DDAB facilitated in obtaining the desired physical dimensions of the silver nanoparticles heading towards their self‐assembly upto 0.5 μm. DDAB served as PTA and stabilizer both in this low cost and quick method for attaining narrow PSD of silver nanoparticles in organic phase. This approach may content the laboratory prototyping desire to obtain required particle size‐window for its potential towards bio‐sensing and electronics application.