상세 정보

underline
Metadata Downloads : dc(xml) or Excel
Cited 0 time in scopus ci

Title 

Enhanced photoluminescence of porous silicon nanoparticles coated by bioresorbable polymers

 

생분해성 고분자로 코팅한 실리콘 나노입자의 형광 증가

Authors 

M B GongalskyA Y KharinL A OsminkinaV U TimoshenkoJin Young JeongHan LeeBong Hyun Chung

Publisher 

SpringerOpen

Issue Date 

2012

Citation 

Nanoscale Research Letters, vol. 7, no. 1, pp. 446-446

Keywords 

BioimagingPhotoluminescencePolymer coatingPorous siliconSilicon nanoparticles

Abstract 

A significant enhancement of the photoluminescence (PL) efficiency is observed for aqueous suspensions of porous silicon nanoparticles (PSiNPs) coated by bioresorbable polymers, i.e., polylactic-co-glycolic acid (PLGA) and polyvinyl alcohol (PVA). PSiNPs with average size about 100 nm prepared by mechanical grinding of electrochemically etched porous silicon were dispersed in water to prepare the stable suspension. The inner hydrophobic PLGA layer prevents the PSiNPs from the dissolution in water, while the outer PVA layer makes the PSiNPs hydrophilic. The PL quantum yield of PLGA/PVA-coated PSiNPs was found to increase by three times for 2 weeks of the storage in water. The observed effect is explained by taking into account both suppression of the dissolution of PSiNPs in water and a process of the passivation of nonradiative defects in PSiNPs. The obtained results are interesting in view of the potential applications of PSiNPs in bioimaging.

ISSN 

1931-7573

Link 

http://dx.doi.org/10.1186/1556-276X-7-446

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


Files in This Item: SizeFormat
10999.pdf1352KbAdobe PDF
qrcode

FusionCharts.
DSpace Software Coptright(c) 2010 MIT and Hewleft-Packard  /  KRIBB-REPOSITORY ( Email:jakim@kribb.re.kr)