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Sigma-Aldrich

HNMB

≥98%

Synonym(s):

4-[(E)-[(2-hydroxy-1-naphthalenyl)methylene]amino]-3-methyl benzoic acid, Aggregation-induced emmision (AIE) materials, Mechanochromic luminescent (MCL) materials

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About This Item

Empirical Formula (Hill Notation):
C19H15NO3
CAS Number:
Molecular Weight:
305.33
UNSPSC Code:
12352103
NACRES:
NA.23

Quality Level

Assay

≥98%

form

solid

color

white

mp

292.9 °C

UV absorption

λ: 317 nm Amax
λ: 443 nm Amax

Application

HNMB is a mechanochromic luminescent material with aggregation-induced emission (AIE). It has applications for pressure sensing and mapping.
In biology, pressure could direct the folding-unfolding of protein molecules, guide blood stream and even control the cell migration. The complexity with these cases makes the monitor and measurement of pressure from conventional force sensor based on classical mechanics impractical. Based on mechanical sensitive materials with ingenious design at the molecular level, a new way to detect pressure is developed. And mechanochromic luminescent (MCL) materials have formed a vital part of such materials. They are intentionally endowed with the ability to change luminescence property (e.g., emission wavelength, emission intensity and lifetime) under mechanical force, which can be readily detected by naked eyes or instruments. As molecule-based sensors, they are compatible to various flexible substrates and arbitrarily curvilinear surfaces, facilitating many applications.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Eethamukkala Ubba et al.
Chemistry, an Asian journal, 13(21), 3106-3121 (2018-08-10)
Mechanoluminescence (ML) involves the emission of light from various organic and inorganic materials upon mechanical stimulus. In this review, we contemplate the advances of metal-free, purely organic ML compounds with aggregation-induced emission (AIE), which give strong emission upon mechanical force.
Xin Qian et al.
Advanced materials (Deerfield Beach, Fla.), 30(25), e1800291-e1800291 (2018-05-04)
Mechanically driven light generation is an exciting and under-exploited phenomenon with a variety of possible practical applications. However, the current driving mode of mechanoluminescence (ML) devices needs strong stimuli. Here, a flexible sensitive ML device via nanodopant elasticity modulus modification
Trap-controlled mechanoluminescent materials.
Zhang J C, et al.
Progress in Materials Science, 103, 678-742 (2019)
Mengyao Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 220, 117125-117125 (2019-05-29)
In this study, we report a new compound, (E)-4-(((2-hydroxynaphthalen-1-yl)methylene)amino)-3-methylbenzoic acid (HNMB), which shows aggregation-induced emission property as well as intramolecular charge transfer (ICT) nature. In addition, it exhibits unique mechanochromic luminescence (MCL). The HNMB solid powder emits strong emission but

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