NDLI: Preferential synthesis of highly conducting Tl(TCNQ) phase II nanorod networks via electrochemically driven TCNQ/Tl(TCNQ) solid-solid phase transformation

Content Provider	Springer Nature Link
Author	Nafady, Ayman Sabri, Ylias Mohammad Kandjani, Ahmad Esmaielzadeh Alsalme, Ali M. Bond, Alan M. Bhargava, Suresh
Copyright Year	2016
Abstract	Facile synthesis and characterization of the highly conducting, thermodynamically favored, Tl(TCNQ) phase II microrods/nanorods onto conducting (glassy carbon (GC)) and semiconducting (indium tin oxide (ITO)) surfaces have been accomplished via redox-based transformation of 7,7,8,8-tetracynoquinodimethane (TCNQ) microcrystals. This electrochemically irreversible process involves the one-electron reduction of surface-confined solid TCNQ into TCNQ·− with concomitant incorporation of the Tl+ (aq) cation, from the bulk solution, at the triple-phase boundary, GC or ITO│(TCNQ(s)/TCNQ·− (s))│Tl+ (aq), through a nucleation/growth mechanism. Consistent with the conceptually related M(TCNQ) systems (M+ = Li+, Na+, K+, Ag+, and Cu+), the TCNQ/Tl(TCNQ) interconversion is strongly dependent upon scan rate, Tl+ (aq) electrolyte concentration, and the method of attaching solid TCNQ onto the electrode surface. Spectroscopic (infrared (IR) and Raman), microscopic (scanning electron microscopy (SEM)), and surface science (X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD)) characterization of the electrochemically synthesized material revealed formation of pure Tl(TCNQ) phase II. Importantly, the generic solid-state electrochemical approach used in this study not only offers facile protocol for controllable and preferential synthesis of Tl(TCNQ) phase II but also provides access to fabricate and tune the morphology to yield microrod/nanorod networks. Graphical abstract Controlled synthesis of the highly conducting Tl(TCNQ) phase II with either nanowire or rod-like morphologies is achieved via a redox-based solid-solid phase interconversion of TCNQ microcrystals in the presence of a Tl+ (aq) electrolyte.
Starting Page	3303
Ending Page	3314
Page Count	12
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	20
Issue Number	12
e-ISSN	14330768
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-08-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TCNQ Nanostructured materials Tl(TCNQ) Redox-based transformation Physical Chemistry Electrochemistry Energy Storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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