Hydrothermal Conversion of One-Photon-Fluorescent Poly(4-vinylpyridine) into Two-Photon-Fluorescent Carbon Nanodots

被引：18

作者：

Lawrence, Katherine ^{[1
]}

Xia, Fengjie ^{[1
,2
]}

Arrowsmith, Rory L. ^{[1
]}

Ge, Haobo ^{[1
]}

Nelson, Geoffrey W. ^{[3
]}

Foord, John S. ^{[3
]}

Felipe-Sotelo, Monica ^{[4
]}

Evans, Nick D. M. ^{[4
]}

Mitchels, John M. ^{[1
]}

Flower, Stephen E. ^{[1
]}

Botchway, Stanley W. ^{[5
]}

Wolverson, Daniel ^{[6
]}

Aliev, Gazi N. ^{[6
]}

James, Tony D. ^{[1
]}

Pascu, Sofia I. ^{[1
]}

Marken, Frank ^{[1
]}

机构：

[1] Univ Bath, Dept Chem, Bath BA2 7AY, Avon, England

[2] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[3] Univ Oxford, Chem Res Labs, Oxford OX1 3TA, England

[4] Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England

[5] Rutherford Appleton Lab, Cent Laser Facil, Stfc Didcot OX11 0QX, Oxon, England

[6] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

来源：

LANGMUIR | 2014年 / 30卷 / 39期

基金：

英国工程与自然科学研究理事会;

关键词：

2-PHOTON EXCITATION; QUANTUM DOTS; NANOPARTICLES; NANOCRYSTALS; PROBES; PHOTOLUMINESCENCE; MICROSCOPY; NANOTUBES; GRAPHITE; DESIGN;

D O I：

10.1021/la404866s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel two-photon-fluorescent N,O-heteroatom-rich carbon nanomaterial has been synthesized and characterized. The new carbon nanoparticles were produced by hydrothermal conversion from a one-photon-fluorescent poly(4-vinylpyridine) precursor (P4VP). The carbonized particles (cP4VP dots) with nonuniform particle diameter (ranging from sub-6 to 20 nm with some aggregates up to 200 nm) exhibit strong fluorescence properties in different solvents and have also been investigated for applications in cell culture media. The cP4VP dots retain their intrinsic fluorescence in a cellular environment and exhibit an average excited-state lifetime of 2.0 +/- 0.9 ns in the cell. The cP4VP dots enter HeLa cells and do not cause significant damage to outer cell membranes. They provide one-photon or two-photon fluorescent synthetic scaffolds for imaging applications and/or drug delivery.

引用

页码：11746 / 11752

页数：7

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