Room temperature ammonia sensor based on jaw like bis-porphyrin molecules

被引：28

作者：

Garg, Kavita ^{[1
]}

Singh, Ajay ^{[2
]}

Majumder, Chiranjib ^{[3
]}

Nayak, Sandip K. ^{[1
]}

Aswal, Dinesh K. ^{[2
]}

Gupta, Shiv K. ^{[2
]}

Chattopadhyay, Subrata ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Bio Organ Div, Bombay 400085, Maharashtra, India

[2] Bhabha Atom Res Ctr, Tech Phys Div, Bombay 400085, Maharashtra, India

[3] Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India

来源：

ORGANIC ELECTRONICS | 2013年 / 14卷 / 04期

关键词：

Porphyrin; Chemi-resistive sensor; Thin films; Organic semiconductors; LANGMUIR-BLODGETT-FILMS; GAS; TETRAPHENYLPORPHYRIN; TRANSISTORS; BLEND;

D O I：

10.1016/j.orgel.2013.01.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A jaw-like bis-porphyrin (bis-TPP) molecule was synthesized anchoring of two porphyrin molecules to a benzene ring at the meta positions through the ester linkage. The bis-TPP molecule and its zinc-derivative (Zn-bis-TPP) were spin-coated on glass surfaces to construct two chemiresistive room temperature NH3 gas sensors. Both the films showed high selectivity, reproducibility and reversibility in sensing NH3 gas (5-40 ppm) in air. The sensing characteristics of the Zn-bis-TPP films (response (2 s) and recovery (2.5 min) times; linear response (952%)) were better than that of the bis-TPP films (response (8 s) and recovery (7.5 min) times; linear response (131%)). This is attributed to the amorphous nature of the former. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：1189 / 1196

页数：8

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