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

被引：28

作者：

Maity, Sibaprasad ^{[1
]}

Sarkar, Shyam ^{[1
]}

Jana, Poulami ^{[1
]}

Maity, Suman Kumar ^{[1
]}

Bera, Santu ^{[1
]}

Mahalingam, Venkataramanan ^{[1
]}

Haldar, Debasish ^{[1
]}

机构：

[1] Indian Inst Sci Educ & Res Kolkata, Dept Chem Sci, Mohanpur 741252, W Bengal, India

来源：

SOFT MATTER | 2012年 / 8卷 / 30期

关键词：

OLIGO(P-PHENYLENE VINYLENE)S; SILVER NANOPARTICLES; INDUCED GELATION; GELS; FLUORESCENCE; ASSEMBLIES; NANOFIBERS; CHIRALITY; SYSTEM; SHAPE;

D O I：

10.1039/c2sm25981h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 Tm3+/Yb3+-doped LiYF4 nanocrystals and ketocyanine dye occurring near 550 nm without affecting the NIR emissions of the nanocrystals.

引用

收藏

页码：7960 / 7966

页数：7

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