Elemental analysis results of various nanohybrids.

Sample	N (%)	C (%)	H (%)	Gd (%)	n (C/N)
LGdH-5,5′BDA	2.47	13.77	2.06	50.06	6.51
LGdH-4,4′BDA	2.62	14.82	1.97	52.38	6.60
LGdH-5,5′BDA-GdL3	2.78	21.71	2.26	46.05	9.11
LGdH-4,4′BDA-GdL3	2.53	29.42	2.82	50.06	13.50