Table 1.

Methods for synthesis of long Cu nanowires (CuNWs) in the presence of organic additives.

Method	Cu Source	Solvent	Reducing Agent	Other Organics Added	Reaction Temperature and Duration	Length of CuNWs	Refs.
Hydrothermal reduction	CuCl2	water	glucose	hexadecylamine	120°C for 2 h	several microns	[13]
	CuCl2	water	glucose	hexadecylamine	120°C for 12 h	tens of microns	[5]
	Cu(NO3)2	water	ethylene glycol	polyvinyl pyrrolidone	160°C for 24 h	tens of microns	[20]
	CuCl2	water	octadecylamine	-	165°C for 140 h	hundreds of microns	[6]
	CuCl2	water	glucose	ethanol, oleic acid, and oleylamine	116 °C for 2–12 h	tens of microns	[7]
Aqueous solution reduction	Cu(NO3)2	water	hydrazine	ethylenediamine	40–80 °C for 25 min–15 h	tens of microns	[1,2,4,21,22]
	Cu(OH)2	water	hydrazine	ethylenediamine	70 °C for 1 h	tens of microns	[23]
	Cu(NO3)2	water	hydrazine	propanediamine	80 °C for 1 h	tens of microns	[24]
	CuCl2	water	glucose	hexadecylamine	100 °C for 6 h	hundreds of microns	[25]
	CuCl2	water–alcohol	L-ascorbic acid	oleylamine	55–85 °C for 12 h	hundreds of microns	[8]
Non-aqueous synthesis	CuCl	oleylamine	via disproportionation reaction	-	200 °C 30 min	tens of microns	[26]
	CuCl2	oleylamine	in the presence of catalytic Ni2+	-	175 °C for 10 h	tens of microns	[9]
	Cu(acac)2	hexadecylamine	in the presence of catalytic Pt	cetyltriamoninum bromide	180 °C for 10 h	hundreds of microns	[3]
	CuCl2	oleylamine	tris(trimethylsilyl)silane	oleic acid	165 °C for 10 h	tens of microns	[10]