Recent Progress in Colorimetric/fluorescent Sensing toward Improvised Explosives（Invited）

Xincun DOU; Guangfa WANG; Zhuohua DAI

doi:10.3788/gzxb20225108.0851507

Journals >Acta Photonica Sinica >Volume 51 >Issue 8 >Page 0851507 > Article

Acta Photonica Sinica
Vol. 51, Issue 8, 0851507 (2022)

Recent Progress in Colorimetric/fluorescent Sensing toward Improvised Explosives（Invited）

Xincun DOU^1,2,*, Guangfa WANG¹, and Zhuohua DAI^1,2

Author Affiliations

¹Xinjiang Key Laboratory of Explosives Safety Science，Xinjiang Technical Institute of Physics and Chemistry，Chinese Academy of Sciences，Urumqi 830000，China

²Center of Materials Science and Optoelectronics Engineering，University of Chinese Academy of Sciences，Beijing 100049，China

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DOI: 10.3788/gzxb20225108.0851507 Cite this Article

Xincun DOU, Guangfa WANG, Zhuohua DAI. Recent Progress in Colorimetric/fluorescent Sensing toward Improvised Explosives（Invited）[J]. Acta Photonica Sinica, 2022, 51(8): 0851507 Copy Citation Text

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The development of optical sensing methods for improvised explosive：From colorimetry，fluorescence to dual mode；From solution，trace residue to single microparticle

Fig. 1. The development of optical sensing methods for improvised explosive：From colorimetry，fluorescence to dual mode；From solution，trace residue to single microparticle

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Fig. 2. Optical sensing improvised explosives with diverse affinities^{［28，32，33］}

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Fig. 3. Schematic illustration of different mechanisms for optical sensing improvised explosives of nitrite and perchlorate^{［32，34］}

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Fig. 4. Mechanisms and performances of optical sensing improvised explosives with colorimetric/fluorescent dual mode^{［34，35］}

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Fig. 5. Optical sensing improvised explosive solution with paper and hydrogel based sensors^{［30，32］}

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Fig. 6. Optical sensing trace residues of improvised explosives^{［30，33］}

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Fig. 7. Optical sensing improvised explosive miroparticles^{［28，32，34，40］}

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Substrate	Improvised explosive state	Mode	Limit of detection	Reference
Qualitative filter paper	NO₂^- solution	Fluorescence-on	1 μmol/L	［32］
Colorimetric hydrogel array	NO₃^- solution	Colorimetric logic gate	16.8 μmol/L	［30］
	S solution		1.2 μmol/L
	NH₄⁺ solution		302.5 μmol/L
	Urea solution		308.4 μmol/L
Colorimetric hydrogel array	KNO₃ solid residue	Colorimetric logic gate	51 ng/mm²	［30］
	S solid residue
	NH₄Cl solid residue
	Urea solid residue
Colorimetric hydrogel	NaClO microparticulate	Colorimetric mode	66.7 pg	［28］
	KClO₃ microparticulate		39.4 pg
	NaClO₄ microparticulate		137.9 pg
	Urea microparticulate		65.5 pg
	KNO₃ microparticulate		127.2 pg
Fluorescent hydrogel	NaNO₂ microparticulate	Fluorescence	2.2 fg	［32］
Dual-mode hydrogel	NaClO₄ microparticulate	Colorimetric/fluorescence dual-mode	0.02 fg	［34］

Table 1. Optical sensing improvised explosives in solution，solid residue and microparticulates

Xincun DOU, Guangfa WANG, Zhuohua DAI. Recent Progress in Colorimetric/fluorescent Sensing toward Improvised Explosives（Invited）[J]. Acta Photonica Sinica, 2022, 51(8): 0851507

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