Table 1.

Blue–emitting CD synthesis approaches, using citric acid as precursor.

Temperature (°C)	Time (min)	Diameter (nm)	λ Excitation (nm)	λ Emission (nm)	QY (%)	References
180	20	0.7–1.0	365	460	10%	18
	2400	3.5–14.3	360	460	2.6%	23
200	30	0.5–2.0	362	460	10.5%	2
		3.0–7.0	400	470	9%	16
		0.6–1.1	365	450	15.4%	19
		0.7–1.0	365	460	10.5%	18
		20.0	420	470	—	20
		2.3	365	460	—	24
	20	0.7–1.0	365	460	8.5%	18
260	40	9.0	362	460	—	17
	50	—	360	460	—	21
	17	—	360	460	—	22
270	20	2.0–10.0	365	460	2%	18