Determining the Effect of Centrifugal Force on the Desired Growth and Properties of PCPDTBT as p-Type Nanowires

Table 2 Raman mode assignments and frequencies (cm⁻¹)

Peak	200 rpm	400 rpm	800 rpm	1000 rpm	2000 rpm	3000 rpm	4000 rpm	Vibrational assignments
v ₁	526	524	526	528	534	527	535	C-C=O in-plane deformation
v ₂	861	861	862	858	861	861	863	CPDT: ring “breathing” (cyclopentane)
v ₃	1269	1272	1270	1272	1269	1273	1272	BT: C-H deformation (symmetric in-plane)
v ₄	1351	1351	1351	1354	1351	1349	1352	C-H deformation (isopropyl group)
v ₅	1423	1429	1427	1421	1426	1424	1429	CPDT: C-C stretch (dithiophenes)
v ₆	1535	1539	1539	1535	1537	1536	1535	BT: C-C stretch (in-plane C-H wag)
v ₇	2700	2702	2699	2695	2689	2711	2714	C-H stretching and bending