Abstract
Optical properties of a cationic two-photon absorption (TPA) chromophore, 1,4-bis{4′-[N,N-bis(6′′-trimethylammoniumhexyl)amino]styryl} benzene tetrabromide (C1) upon complexation with an anionic diblock copolymer, poly[(ethylene oxide)-block-(sodium 2-acrylamido-2-methyl-1-propane sulfonate)] (E m-A n) and a cationic surfactant, cetyltrimethylammonium bromide (CTAB) have been studied. Electrostatic interaction among C1, cationic CTAB and anionic (E m-A n) forms a vesicular polymeric nanostructure (containing C1 in a core), which is soluble in water. Incorporation of C1 into the nonpolar microenvironment inside the nanostructure successfully modulated its optical properties in aqueous medium. In water, fluorescence quantum yield (η) of C1 (0.32) was increased up to 0.55 accompanied with 30∼40 nm PL photoluminescence (PL) spectral shifts by forming the self-assembled nanostructure. This vesicular nanostructure may have a potential application as a two-photon molecular tag for biological imaging by two-photon microscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 65-71 |
| Number of pages | 7 |
| Journal | Molecular Crystals and Liquid Crystals |
| Volume | 554 |
| DOIs | |
| Publication status | Published - 2012 Mar 1 |
| Externally published | Yes |
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Keywords
- Bioimaging
- two-photon absorption
- two-photon fluorophore
- two-photon microscopy
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Materials Science(all)
Cite this
Optical properties of a two-photon chromophore in a polymeric nanostructure. / Nag, Okhil Kumar; Woo, Han Young.
In: Molecular Crystals and Liquid Crystals, Vol. 554, 01.03.2012, p. 65-71.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Optical properties of a two-photon chromophore in a polymeric nanostructure
AU - Nag, Okhil Kumar
AU - Woo, Han Young
PY - 2012/3/1
Y1 - 2012/3/1
N2 - Optical properties of a cationic two-photon absorption (TPA) chromophore, 1,4-bis{4′-[N,N-bis(6′′-trimethylammoniumhexyl)amino]styryl} benzene tetrabromide (C1) upon complexation with an anionic diblock copolymer, poly[(ethylene oxide)-block-(sodium 2-acrylamido-2-methyl-1-propane sulfonate)] (E m-A n) and a cationic surfactant, cetyltrimethylammonium bromide (CTAB) have been studied. Electrostatic interaction among C1, cationic CTAB and anionic (E m-A n) forms a vesicular polymeric nanostructure (containing C1 in a core), which is soluble in water. Incorporation of C1 into the nonpolar microenvironment inside the nanostructure successfully modulated its optical properties in aqueous medium. In water, fluorescence quantum yield (η) of C1 (0.32) was increased up to 0.55 accompanied with 30∼40 nm PL photoluminescence (PL) spectral shifts by forming the self-assembled nanostructure. This vesicular nanostructure may have a potential application as a two-photon molecular tag for biological imaging by two-photon microscopy.
AB - Optical properties of a cationic two-photon absorption (TPA) chromophore, 1,4-bis{4′-[N,N-bis(6′′-trimethylammoniumhexyl)amino]styryl} benzene tetrabromide (C1) upon complexation with an anionic diblock copolymer, poly[(ethylene oxide)-block-(sodium 2-acrylamido-2-methyl-1-propane sulfonate)] (E m-A n) and a cationic surfactant, cetyltrimethylammonium bromide (CTAB) have been studied. Electrostatic interaction among C1, cationic CTAB and anionic (E m-A n) forms a vesicular polymeric nanostructure (containing C1 in a core), which is soluble in water. Incorporation of C1 into the nonpolar microenvironment inside the nanostructure successfully modulated its optical properties in aqueous medium. In water, fluorescence quantum yield (η) of C1 (0.32) was increased up to 0.55 accompanied with 30∼40 nm PL photoluminescence (PL) spectral shifts by forming the self-assembled nanostructure. This vesicular nanostructure may have a potential application as a two-photon molecular tag for biological imaging by two-photon microscopy.
KW - Bioimaging
KW - two-photon absorption
KW - two-photon fluorophore
KW - two-photon microscopy
UR - http://www.scopus.com/inward/record.url?scp=84855948183&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855948183&partnerID=8YFLogxK
U2 - 10.1080/15421406.2012.633045
DO - 10.1080/15421406.2012.633045
M3 - Article
AN - SCOPUS:84855948183
VL - 554
SP - 65
EP - 71
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
SN - 1542-1406
ER -