Table 1.

Absorption peak wavelength (${\lambda }^{abs}$), molar absorptivity ($\epsilon$), emission peak wavelength (${\lambda }^{em}$) and relative quantum yield (${\mathsf{\Phi }}_r$) of the indicators in chloroform and polystyrene films.

Indicator	${\mathit{\lambda }}^{\mathbf{abs}}$nm ($\mathit{\epsilon }$) M${}^{-1}$ cm${}^{-1}$ ${}^{\mathit{a}}$		${\mathit{\lambda }}^{\mathbf{em}}$nm ${}^{\mathit{b}}$	${\mathsf{\Phi }}_{\mathit{r}}$ ${}^{\mathit{c}}$
	B Band	Q Band
PdTFPP	407 (250,000)	520 (22,800), 553 (20,200)	673	1.0
IrTFPP-CO-Cl	414 (195,000)	527 (19,200), 558 (6100)	681	2.3

${}^a$ chloroform; ${}^b$ polystyrene; ${}^c$ ${\mathsf{\Phi }}_r$ for IrTFPP-CO-Cl in PS was estimated relative to the PdTFPP counterpart (${\mathsf{\Phi }}_r$ = 1); uncertainties: ±6% for $\epsilon$, ±2 nm for $\lambda$, and ±15% for ${\mathsf{\Phi }}_r$.