Copolymers Formation by Photopolymerization of (Meth)acrylates Containing Dissolved Polyheteroarylenes

Table 3

ESR spectra data of nitroxyl radicals detected at irradiation of studied solutions. Solvent—CH₂Cl₂; [Styrene]₀, [Phenyl benzoate]₀, [Diimide]₀, [Ethyl acrylate]₀  = 1  mol L^-1; [AIBN]₀, [MeCHBrC(O)OEt]₀, [Re₂(CO)₁₀]₀  = 3×10⁻³ mol L^-1.

			Hyperfine splitting
Radical source	Spin-Trap	Detected radical	Constants (𝐺)		𝑔-Value
			aN	a𝛽-H
Styrene	ND*	Me2^•CCN (R)	12.8	—	2.0059
AIBN		RCH2^•CHPh	13.7	4.0	2.0059
Styrene		R	12.8	—	2.0059
AIBN	ND	PhCOCH2^•CHPh	13.7	5.2	2.0061
Phenyl benzoate		O^•CPh	7.2	—	2.0069
AIBN	ND	R	12.8	—	2.0059
Phenyl benzoate		O^•CPh	7.2	—	2.0069
Phenyl benzoate	MNP^**	O^•CPh	8.0	—	2.0066
		PhC(O)O^•C6Bu^tH5	14.2	2.7	2.0060
Styrene		A^***	13.7	8.2	2.0060
AIBN	ND	B^***	13.7	4.2	2.0060
Diimide
AIBN		R	12.9	—	2.0060
Diimide	ND	B^***	13.8	4.0	2.0060
		O^•CPh	5.4	—	2.0064
Diimide	MNP	^•Bu^t	15.7	—	2.0060
		B^***	15.0	3.7	2.0060
AIBN	ND	R	12.8	—	2.0059
Ethyl acrylate		RCH2^•CHC(O)OEt	13.6	8.0	2.0059
MeCHBrC(O)OEt		A^***	13.6	8.2	2.0059
Re2(CO)10	ND	B^***	13.6	4.0	2.0059
Diimide

*Nitrosodurene (ND) ^**2-Methyl-2-nitrosopropane (MNP) ^***see the scheme and text.