Near-infrared optical response of thin film pH-sensitive hydrogel coated on a gold nanocrescent array

被引：30

作者：

Jiang, Hao ^{[1
]}

Markowski, Jan ^{[1
]}

Sabarinathan, Jayshri ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Elect & Comp Engn, London, ON N6A 5B9, Canada

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 24期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

SURFACE-PLASMON RESONANCE; PHOTONIC CRYSTAL; WAVE-GUIDE; CONSTANTS; SENSORS; SINGLE; LAYER;

D O I：

10.1364/OE.17.021802

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A hydrogel-based chemiresponsive sensor for monitoring H+ (pH) has been developed by coating the surface of a gold nanocrescent array structure with a thin film of a poly(2-hydroxylethyl methacrylate)-based (poly-HEMA) hydrogel. The transmission measurement results of the close-packed gold nanocrescent array fabricated via electron beam lithography demonstrate near-infrared localized surface plasmon resonance peaks with sensitivities up to 332nm/RIU in detecting refractive index change. Measurements of the hydrogel under solutions of increasing pH show the plasmon peak blueshifts by 17nm and the integrated transmission increases by 1.8 in the operating range of 4.5 - 6.4 pH, which is ideal for biochemical sensor applications. (C) 2009 Optical Society of America

引用

页码：21802 / 21807

页数：6

共 21 条

[1] Optical properties of gold nanorings -: art. no. 057401 [J].

Aizpurua, J ;

Hanarp, P ;

Sutherland, DS ;

Käll, M ;

Bryant, GW ;

de Abajo, FJG .

PHYSICAL REVIEW LETTERS, 2003, 90 (05) :4

[2] Biosensing with plasmonic nanosensors [J].

Anker, Jeffrey N. ;

Hall, W. Paige ;

Lyandres, Olga ;

Shah, Nilam C. ;

Zhao, Jing ;

Van Duyne, Richard P. .

NATURE MATERIALS, 2008, 7 (06) :442-453

[3] Thin layer sensing with multipolar plasmonic resonances [J].

Bocchio, Noelia L. ;

Unger, Andreas ;

Alvarez, Marta ;

Kreiter, Maximilian .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (37) :14355-14359

[4] Highly tunable infrared extinction properties of gold nanocrescents [J].

Bukasov, Rostislav ;

Shumaker-Parry, Jennifer S. .

NANO LETTERS, 2007, 7 (05) :1113-1118

[5] An influence of polyhema gate layer on properties of chemfets [J].

Dawgul, M ;

Pijanowska, DG ;

Krzysków, A ;

Kruk, J ;

Torbicz, W .

SENSORS, 2003, 3 (06) :146-159

[6] Hydrogel-supported optical-microcavity sensors [J].

DeLouise, LA ;

Fauchet, PM ;

Miller, BL ;

Pentland, AA .

ADVANCED MATERIALS, 2005, 17 (18) :2199-2203

[7] Use of colloidal gold surface plasmon resonance peak shift to infer affinity constants from the interactions between protein antigens and antibodies specific for single or multiple epitopes [J].

Englebienne, P .

ANALYST, 1998, 123 (07) :1599-1603

[8] EFFECT OF CROSS-LINKING ON THE PROPERTIES OF CARBOXYLIC POLYMERS .1. APPARENT DISSOCIATION CONSTANTS OF ACRYLIC AND METHACRYLIC ACID POLYMERS [J].

FISHER, S ;

KUNIN, R .

JOURNAL OF PHYSICAL CHEMISTRY, 1956, 60 (07) :1030-1032

[9] 3-D FDTD Analysis of Gold-Nanoparticle-Based Photonic Crystal on Slab Waveguide [J].

Jiang, Hao ;

Sabarinathan, Jayshri ;

Manifar, Touraj ;

Mittler, Silvia .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2009, 27 (13) :2264-2270

[10] POTENTIOMETRIC TITRATIONS OF POLYMETHACRYLIC ACID [J].

KATCHALSKY, A ;

SPITNIK, P .

JOURNAL OF POLYMER SCIENCE, 1947, 2 (04) :432-446

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