The Field-Effect Transistor Based on a Polyyne–Polyene Structure Obtained via PVDC Dehydrochlorination

Abstract

We report on the formation of the field-effect transistor based on a polyyne–polyene structure. Polyvinylidene chloride (PVDC) drop casting and its subsequent dehydrochlorination in KOH solution allowed for the formation of porous polyyne–polyene material, which was analyzed via transmission electron microscopy, Fourier-transform infrared spectroscopy, and Raman spectroscopy, revealing the presence of sp- and sp2-hybridized chained fragments in the structure. The polyyne–polyene-based field-effect transistor showed a transconductance of 3.2 nA/V and a threshold voltage of −0.3 V. The obtained results indicate that polyyne–polyene-based transistors can be used as discrete elements of molecular electronics and that subsequent studies can be aimed toward the development of selective polyyne–polyene-based gas sensors with tunable sensitivity.

Thermochemical Activation of Wood with NaOH, KOH and H3PO4 for the Synthesis of Nitrogen-Doped Nanoporous Carbon for Oxygen Reduction Reaction

“…The D" band was previously related to the amorphization of carbon material [49,50]. This feature may also contain contributions from the C=C vibrations of polyenes [51,52]. The broad band in the frequency region of 1220-1270 cm -1 (similar to our D* band) in the Raman spectra of nanoporous activated carbon material was previously assigned to the amorphous carbonrelated D band and C-C vibrations of cis-polyacetelyne groups [50].…”

Resistive Gas Sensors Based on Porous Sp-Containing Films Obtained by Dehydrohalogenation of PVDC and PVDC-PVC Copolymer

“…Such notation indicates that the obtained material has a chain-like structure, which is comprised from both sp-(polyynic) and sp 2 -hybridized (polyenic) linear fragments. In our previous studies, such structures were confirmed as a result of the dehydrohalogenation of PVDC [8] and PVDF [3]. Sp-containing materials are of recent interest, as theoretical studies reveal a tunable bandgap of such materials depending on the length of the carbon chain [9], their prominent thermal conductivity and mechanical strength [10].…”

“…The The spectrum of dh-PVDC (red line in Figure 3) shows relatively wide lines at 1160, 1560 and 2170 cm −1 . These lines are related to the vibrations of the C-C and of trans-isomeric polyenic structures [21], C=C of various carbon-based materials including disordered carbon and polyenes [8], and the vibrations of C≡C bonds [22][23][24], respectively. The plateau at 1210-1460 cm −1 is mainly attributed to the contribution of the D-line related to the breathing mode of sp 2 -hybridized clusters [25].…”

“…Its emergence is generally related to the disorder of the sp 2 -hybridized component. The fitting of the similar spectra and its more detailed discussion are presented in [8].…”

Monodisperse Molecular Models for the sp Carbon Allotrope Carbyne; Syntheses, Structures, and Properties of Diplatinum Polyynediyl Complexes with PtC20Pt to PtC52Pt Linkages

“…For more than 60 years, chemists have approached the study of carbyne by preparing monodisperse conjugated polyynes of ever-increasing lengths. − Many of these efforts have sought to define asymptotic limits for physical properties capable of providing insight into the macromolecule. In addition, there is the purely synthetic challenge of the length of an sp carbon chain that can be accessed.…”