Molecular Switches

	M M 0 M
	M
0 M	M
P M	M
	M
	M

M

M

&

M

M

F V F M V

F V

	(A)
		20				(a)
	A					(b)
		10
	I /
						(c)
		0
			0	0.2	0.4	0.6
				E / V
	(B)	16
		12
	/ A	8
	cat
	I
		4
		0	4	8		12
		0

Cycle number

	0 M P M
0 M

F V F V F V

N	N NAD+		N NAD+
	+
			N
		UV	Visible Light
	CH3CH2OH	N	N	Red
			NAD+
		AlcDH		D I
	O		NADH
	CH3CH	N	N	Ox (DCIP)

			O
O			C NH2		O
–O P O	O N			CH2CNH
O		OH N		NH	CH CO2CH3
HO				N	CH2
–O P O
		O	N	N
O
	HO		OH		N N

			O
	O		C NH2		O
UV	–O P O	O N		CH2CNH
	O			NH	CH CO2CH3
		OH N
	HO			N	CH2
Visible	–O P O
		O	N	N
	O

HO OH

N N

(32a)

(32b)

M

F V

F V F V

F V F V F V

F V

F V

F V

F V

F V

	M
	M
	M
M
M
M M

1 mm