%0 Journal Article %A Gautam, Vineeta %A P. Singh, Karan %A Yadav, Vijay L. %D 2017 %T Multicomponent Template EffectsPreparation of Highly Porous Polyaniline Nanorods Using Crude Lemon Juice and Its Application for Selective Detection of Catechol %U https://acs.figshare.com/articles/journal_contribution/Multicomponent_Template_Effects_Preparation_of_Highly_Porous_Polyaniline_Nanorods_Using_Crude_Lemon_Juice_and_Its_Application_for_Selective_Detection_of_Catechol/5785839 %R 10.1021/acssuschemeng.7b03705.s001 %2 https://acs.figshare.com/ndownloader/files/10210368 %K p K %K 5 μ M %K PANI-Lemon-modified carbon paste electrode %K redox center %K polyaniline samples %K electrocatalytic detection %K acid %K Lemon juice %K morphology %K protonating condition %K synthesis %K matrix molecules %K catechol %K paper deals %K Porous Polyaniline Nanorods %K Selective Detection %K template-like effects %K polymer %K eco-friendly concept %K nm %K spectroscopic analysis %K Crude Lemon Juice %K multicomponent template effects %X This paper deals with the preparation and characterization of three different polyaniline samples, namely, PANI-HCl (synthesis in inorganic acid), PANI-Citric acid (synthesis in organic acid), and PANI-Lemon (synthesis in crude lemon juice–biological-derived acidic solution). PANI-Lemon is a low-density polymer with well-defined nanorod shape morphology (∼100 nm in diameter and ∼300–600 nm in length). Lemon juice manipulates the morphology of PANI because it has a lower pKa and the matrix molecules produce template-like effects. The distinct structure of PANI-Lemon was confirmed from microscopic and spectroscopic analysis. In the same protonating condition, the alignment of chains is the dominating factor which governs the conductivity of polyaniline. PANI-Lemon was successfully applied for the electrocatalytic detection of catechol. The selective interaction of PANI-Lemon with catechol leads to the generation of a new redox center. PANI-Lemon-modified carbon paste electrode exhibited high sensitivity (49.68 μA μM–1 cm–2), specificity, a wide linear range (from 5 μM to 100 mM), a low detection limit (2.1 μM), and less response time (2 s). On the basis of our results, we propose an eco-friendly concept "multicomponent template effects" to bring nanoscale morphological manipulation using a suitable natural extract. This concept could be equally implemented to synthetic polymers and other nanoparticles. %I ACS Publications