Sonication-responsive organogelation of a tripodal peptide and optical properties of embedded Tm3+ nanoclusters

Sibaprasad Maity; Shyam Sarkar; Poulami Jana; Suman Kumar Maity; Santu Bera; Venkataramanan Mahalingam; Debasish Haldar

doi:10.1039/c2sm25981h

Sonication-responsive organogelation of a tripodal peptide and optical properties of embedded Tm³⁺ nanoclusters

Sibaprasad Maity, Shyam Sarkar, Poulami Jana, Suman Kumar Maity, Santu Bera, Venkataramanan Mahalingam^*, Debasish Haldar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The sonication induced organogelation of a tripodal peptide has been investigated. The tripodal peptide does not form a gel in organic solvents after heating, cooling and ageing. Ultrasound has been used as a source of energy to tune the molecular assembly and organogelation. CD, NMR and fluorescence spectroscopies indicate distinct structural changes before and after sonication. FE-SEM and AFM of the xerogels reveal the nanofibrillar morphology. Moreover, the sonication responsive organogelation has been used to fabricate novel lanthanide nanocrystal decorated fibers. This gelation selectively quenches the viable emissions from the nanocryatsls as well the FRET observed between Tm ³⁺/Yb³⁺-doped LiYF₄ nanocrystals and ketocyanine dye occurring near 550 nm without affecting the NIR emissions of the nanocrystals.

Original language	English
Pages (from-to)	7960-7966
Number of pages	7
Journal	Soft Matter
Volume	8
Issue number	30
DOIs	https://doi.org/10.1039/c2sm25981h
State	Published - 14 Aug 2012
Externally published	Yes

Access to Document

10.1039/c2sm25981h

Cite this

@article{68dfe47085c74639b521a37abcf50b75,

title = "Sonication-responsive organogelation of a tripodal peptide and optical properties of embedded Tm3+ nanoclusters",

abstract = "The sonication induced organogelation of a tripodal peptide has been investigated. The tripodal peptide does not form a gel in organic solvents after heating, cooling and ageing. Ultrasound has been used as a source of energy to tune the molecular assembly and organogelation. CD, NMR and fluorescence spectroscopies indicate distinct structural changes before and after sonication. FE-SEM and AFM of the xerogels reveal the nanofibrillar morphology. Moreover, the sonication responsive organogelation has been used to fabricate novel lanthanide nanocrystal decorated fibers. This gelation selectively quenches the viable emissions from the nanocryatsls as well the FRET observed between Tm 3+/Yb3+-doped LiYF4 nanocrystals and ketocyanine dye occurring near 550 nm without affecting the NIR emissions of the nanocrystals.",

author = "Sibaprasad Maity and Shyam Sarkar and Poulami Jana and Maity, {Suman Kumar} and Santu Bera and Venkataramanan Mahalingam and Debasish Haldar",

year = "2012",

month = aug,

day = "14",

doi = "10.1039/c2sm25981h",

language = "אנגלית",

volume = "8",

pages = "7960--7966",

journal = "Soft Matter",

issn = "1744-683X",

publisher = "Royal Society of Chemistry",

number = "30",

}

TY - JOUR

T1 - Sonication-responsive organogelation of a tripodal peptide and optical properties of embedded Tm3+ nanoclusters

AU - Maity, Sibaprasad

AU - Sarkar, Shyam

AU - Jana, Poulami

AU - Maity, Suman Kumar

AU - Bera, Santu

AU - Mahalingam, Venkataramanan

AU - Haldar, Debasish

PY - 2012/8/14

Y1 - 2012/8/14

N2 - The sonication induced organogelation of a tripodal peptide has been investigated. The tripodal peptide does not form a gel in organic solvents after heating, cooling and ageing. Ultrasound has been used as a source of energy to tune the molecular assembly and organogelation. CD, NMR and fluorescence spectroscopies indicate distinct structural changes before and after sonication. FE-SEM and AFM of the xerogels reveal the nanofibrillar morphology. Moreover, the sonication responsive organogelation has been used to fabricate novel lanthanide nanocrystal decorated fibers. This gelation selectively quenches the viable emissions from the nanocryatsls as well the FRET observed between Tm 3+/Yb3+-doped LiYF4 nanocrystals and ketocyanine dye occurring near 550 nm without affecting the NIR emissions of the nanocrystals.

AB - The sonication induced organogelation of a tripodal peptide has been investigated. The tripodal peptide does not form a gel in organic solvents after heating, cooling and ageing. Ultrasound has been used as a source of energy to tune the molecular assembly and organogelation. CD, NMR and fluorescence spectroscopies indicate distinct structural changes before and after sonication. FE-SEM and AFM of the xerogels reveal the nanofibrillar morphology. Moreover, the sonication responsive organogelation has been used to fabricate novel lanthanide nanocrystal decorated fibers. This gelation selectively quenches the viable emissions from the nanocryatsls as well the FRET observed between Tm 3+/Yb3+-doped LiYF4 nanocrystals and ketocyanine dye occurring near 550 nm without affecting the NIR emissions of the nanocrystals.

UR - http://www.scopus.com/inward/record.url?scp=84869598313&partnerID=8YFLogxK

U2 - 10.1039/c2sm25981h

DO - 10.1039/c2sm25981h

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84869598313

SN - 1744-683X

VL - 8

SP - 7960

EP - 7966

JO - Soft Matter

JF - Soft Matter

IS - 30

ER -

Sonication-responsive organogelation of a tripodal peptide and optical properties of embedded Tm³⁺ nanoclusters

Abstract

Access to Document

Other files and links

Fingerprint

Cite this